sparsely cellular specimen sparsely cellular specimen

A: Probably, yes. Highly cellular specimens are ideal for smeared preparations, whereas sparsely cellular specimens will require multiple centrifugation steps and special cell concentration methods. VA In cell biology, a paraspeckle is an irregularly shaped compartment of the cell, approximately 0.2-1 m in size, [1] found in the nucleus ' interchromatin space. CS Characteristically, distinct granules (calcitonin granules) are spotted in the cytoplasm of the cancer cells, as well as eccentric nuclei, indicating a plasmacytoid appearance to the tumor cells. Copyright 2023 American Society for Clinical Pathology. The contribution of intraoperative frozen section after a suspicious FNA diagnosis is questionable, as Lee et al[38] have demonstrated that preoperative FNA has a higher sensitivity than frozen section in detecting PTC. . We thank Diane Solomon, MD, for review of the manuscript and helpful comments. and transmitted securely. Any specimen that contains abundant colloid is considered adequate (and benign), even if 6 groups of follicular cells are not identified: A sparsely cellular specimen with abundant colloid is, by implication, a predominantly macrofollicular nodule and, therefore, almost certainly benign. Cantara et al[59] evaluated this panel of tumor-associated mutations in thyroid FNA samples. The cytotechnologist is specially trained and certified to examine cellular samples under a microscope, evaluating the slides for specific abnormalities in the cell's shape, color, or size which could signal a cancerous process or other disease. Grant The most common sites are the lungs, bone, liver and brain. Marchevsky AM, Walts AE, Bose S, Gupta R, Fan X, Frishberg D, Scharre K, Zhai J. Evidence-based evaluation of the risks of malignancy predicted by thyroid fine-needle aspiration biopsies. Consequently it is essential to distinguish this form of atypical calcification from true psammomatous calcifications with their concentrically laminated microscopic appearance[35]. In order to establish a standardized diagnostic terminology/classification system for reporting thyroid FNAC results, the National Cancer Institute (NCI) in the United States sponsored the NCI Thyroid FNA State of the Science Conference with a group of experts at Bethesda, MD, in October 2007[7]. In addition, obtaining adequate material at FNA is a very important issue, as the rates of malignancy observed in the nondiagnostic categories of both reporting systems are very high[14]. Carcinoma of the thyroid. Prepares and stains all specimen types (gyn, medical cytology, fna) for cytologic examination. L Therefore, the DC III (AUS/FLUS) cases are managed conservatively with repeat FNAs, whereas the DC IV, DC V, and DC VI cases, and TIR 3, TIR 4 and TIR 5 cases respectively, are managed operatively, with thyroid lobectomy or total thyroidectomy. Cibas Q: Can the core biopsy determine the blast count? Incidence of malignancy in thyroid nodules determined to be follicular lesions of undetermined significance on fine-needle aspiration. As a result, 3 to 15 glass slides from each patient are taken and examined, which can be either Giemsa- or Papanikolaou-stained slides[14]. Such cases occur with some regularity, and they are best classified as suspicious for malignancy, qualified as suspicious for papillary carcinoma. Nodules called suspicious for papillary carcinoma are resected by lobectomy or thyroidectomy. Logani These specimens demonstrate inadequate cellularity, poor fixation and preservation, obscuring blood or ultrasound gel, or a combination of the above factors. However, some three dimensional structures that resemble the epithelial tips of papillae without the fibrovascular cores can be seen[35]. Fine-needle aspiration cytology (FNAC) has been widely adopted as a meticulous, secure and cost-effective method for the diagnosis of non-toxic thyroid nodules[1,2]. The Bethesda thyroid fine-needle aspiration classification system: year 1 at an academic institution. A minor population of follicular cells show nuclear enlargement, often accompanied by prominent nucleoli, eg, Specimens from patients with a history of radioactive iodine, carbimazole, or other pharmaceutical agents, Repair due to involutional changes such as cystic degeneration and/or hemorrhage, There is an atypical lymphoid infiltrate (in which a repeated aspirate for flow cytometry is desirable), but the degree of atypia is insufficient for the general category suspicious for malignancy.. Accessibility RA The Bethesda System for Reporting Thyroid Cytopathology is the most preferred system for the diagnosis of FNA specimens, which also contains guidelines for the diagnosis and treatment of indeterminate cases. (General, Ortho . [2] First documented in HeLa cells, where there are generally 10-30 per nucleus, [3] Paraspeckles are now known to also exist in all human primary cells, transformed cell lines and . Perceptions of diagnostic terminology and cytopathologic reporting of fine-needle aspiration biopsies of thyroid nodules: a survey of clinicians and pathologists. It usually affects the elderly population, and often presents as a large and bulky tumor with extrathyroidal extension and metastases. Such changes may represent atypical but benign cyst lining cells, but a papillary carcinoma cannot be entirely excluded (ThinPrep, Papanicolaou stain). Quick tip: A cellular aspirate smear is crucial to an adequate differential count and assessment of morphologic dysplasia. The false-negative rate of a benign interpretation is low (0%3%),2,12 but patients are nevertheless followed up with repeated assessment by palpation or ultrasound at 6- to 18-month intervals.15 If the nodule shows significant growth or suspicious sonographic changes, a repeated FNA is considered. We subcategorized Bethesda I into insufficient cellularity or artifacts, and Bethesda categories III and V into cellular without artifacts, sparsely cellular, or artifacts. Human immunodeficiency virus (HIV)-associated cystic lymphoepithelial lesions. The above panel correctly identified cancer in 78.2%, whereas cytology identified 58.9% of the thyroid cancers. The main purpose of thyroid FNA is to stratify higher risk patients for surgery, and to prevent unnecessary surgeries for benign conditions. Assisted nurses with recovering over 70 post-surgical patients daily. The specimen is usually cellular with polygonal cells in loose papillary clusters with abundant eosinophilic cytoplasm. In 2007 the Royal College of Pathologists introduced a new thyroid FNA reporting system, which was based on the existing United Kingdom terminology, but with some alterations, like new subcategories (i.e., c for cystic lesions, a for atypia, f for follicular neoplasm). Cerutti JM. Ravetto Edmund S. Cibas, MD, and Susan J. Mandel, MD, MPH, served as moderators. In this study the AUS category was further subdivided into HCLUS (atypical cells rule out Hurthle cell neoplasm) and FLUS. Clinical outcome for atypia of undetermined significance in thyroid fine-needle aspirations: should repeated fna be the preferred initial approach? Anaplastic carcinoma of the thyroid. L Results: We evaluated 5030 thyroid FNAs. They can be readily classified as malignant due to nuclear pleomorphism, chromatin clumping, necrosis, atypical mitoses and other malignant features[40]. Baloch ZW, Cibas ES, Clark DP, Layfield LJ, Ljung BM, Pitman MB, Abati A. Notes and recommendations are not required but can be useful in certain circumstances. First Time Setup Tested phones Android App Settings Estimated Band FAQ Translate . At low magnification, aspirates of PTC are typically cellular, epithelium-rich structures. Descriptive comments that follow are used to subclassify the benign interpretation. French Bukhari MH, Niazi S, Hanif G, Qureshi SS, Munir M, Hasan M, Naeem S. An updated audit of fine needle aspiration cytology procedure of solitary thyroid nodule. Any specimen that contains abundant colloid is adequate (and benign), even if 6 groups of follicular cells are not identified; a sparsely cellular specimen with abundant colloid is, by implication, a predominantly macrofollicular nodule and therefore almost certainly benign. The purpose of this diagnostic category is to identify a nodule that might be a follicular carcinoma (FC) and triage it for surgical lobectomy. Immunohistochemistry test for specific biomarkers (i.e., calcitonin, thyroglobulin) will easily distinguish MTC from other thyroid malignancies. Search for other works by this author on: Fine-needle aspiration biopsy of thyroid nodules: impact on thyroid practice and cost of care, Long-term assessment of a multidisciplinary approach to thyroid nodule diagnostic evaluation, The Bethesda System for Reporting Thyroid Cytopathology, Diagnostic terminology and morphologic criteria for cytologic diagnosis of thyroid lesions: a synopsis of the National Cancer Institute Thyroid Fine-Needle Aspiration State of the Science Conference, The: National Cancer Institute Thyroid Fine Needle Aspiration State of the Science Conference: a summation, Fine-needle aspiration cytology of the thyroid, 1980 to 1986, Long-term follow-up of patients with benign thyroid fine-needle aspiration cytologic diagnoses, Usefulness of fine-needle aspiration in the diagnosis of thyroid carcinoma: a retrospective study in 37,895 patients, Accuracy of thyroid fine-needle aspiration using receiver operator characteristic curves, Fine-needle aspiration of thyroid nodules: a study of 4703 patients with histologic and clinical correlations, Accuracy of fine-needle aspiration of thyroid: a review of 6226 cases and correlation with surgical or clinical outcome, Fine-needle aspiration cytology of the thyroid: a 12-year experience with 11,000 biopsies, Non-diagnostic fine-needle aspiration biopsy: a dilemma in management of nodular thyroid disease, Value of repeat fine needle aspiration (FNA) of the thyroid [abstract], Post thyroid FNA testing and treatment options: a synopsis of the National Cancer Institute Thyroid Fine Needle Aspiration State of the Science Conference, Atypical cells in fine-needle aspiration biopsy specimens of benign thyroid cysts, NCCN thyroid carcinoma practice guidelines, Fine-needle aspiration of follicular lesions of the thyroid: diagnosis and follow-up, Diagnosis of follicular neoplasm: a gray zone in thyroid fine-needle aspiration cytology, Factors that predict malignant thyroid lesions when fine-needle aspiration is suspicious for follicular neoplasm., Thyroid cytology and the risk of malignancy in thyroid nodules: importance of nuclear atypia in indeterminate specimens, Fine-needle aspiration biopsy of the thyroid: an appraisal. These can be highly useful when a core biopsy is suboptimal, demonstrates marked myelofibrosis, is a dry tap, or otherwise fails to provide adequate visual data for morphology, architecture, cellularity, and hematopoietic lineage assessments. Apart from imaging studies, serological or immunohistochemical studies can be used to secure diagnosis, when the FNA indicated suspicious for MTC or suspicious for lymphoma. Cochand-Priollet Walfish Kinematic comparison between the knee after bicruciate stabilized total knee arthroplasty and the native knee: A cadaveric study. Impact of mutational testing on the diagnosis and management of patients with cytologically indeterminate thyroid nodules: a prospective analysis of 1056 FNA samples. However cases with indeterminate cytological findings still remain a matter of debate. Interestingly all predicted cancer proved to be papillary thyroid carcinoma in the final histology[59]. Tyrosine-derived polymeric surfactant nanospheres insert cholesterol in cell membranes. ES This subset of patients could benefit form a repeat FNA; (4) DC IV Follicular Neoplasm or Suspicious for a Follicular Neoplasm. In other cases it is sparsely cellular and contains atypical lymphoid cells. There are focal features suggestive of papillary carcinoma, including nuclear grooves, enlarged nuclei with pale chromatin, and alterations in nuclear contour and shape in an otherwise predominantly benign-appearing sample (especially in patients with Hashimoto thyroiditis or with abundant colloid and other benign-appearing follicular cells). This category includes the diagnoses of nodular goiter, nodular goiter with hyperplastic nodules, colloid nodules, cyst contents with/without benign follicular cells, and lymphocytic thyroiditis; (3) DC III Atypia of Undetermined Significance or Follicular Lesion of Undetermined Significance (Figure (Figure2).2). Handle sparsely cellular specimens ii. Rossi Role of repeat fine-needle aspiration biopsy (FNAB) in the management of thyroid nodules. The remaining 10% of cases represent a significant subset of thyroid specimens with some form of AUS/FLUS. Various diagnostic terminologies, including indeterminate, atypical, and suspicious for malignancy, were used to describe these challenging cases[5]. The general category FN/SFN is a self-sufficient interpretation; narrative comments that follow are optional. Moses et al[60] also examined the clinical utility of the above panel in thyroid FNA biopsies. Any specimen that contains abundant colloid is considered adequate (and benign), even if 6 groups of follicular cells are not identified: A sparsely cellular specimen with abundant colloid is, by implication, a predominantly macrofollicular nodule and, therefore, almost certainly benign. Centrifuge the specimen again and decant the entire supernatant. WC This website is intended for pathologists and laboratory personnel but not for patients. The diagnosis of this variant as a PTC is relatively easy, due to the numerous papillae and the coexisting intranuclear inclusions. et al. Preparations for the conference began 18 months earlier with the designation of a steering committee, coordination with cosponsoring organizations, and the establishment of a dedicated, permanent Web site. B) 1,000 view. The FNA specimen of this neoplasm is usually cellular and shows neoplastic cells arranged in papillary groups, or clusters, or as single cells in a background of thick colloid, nuclear or calcific debris, macrophages and stromal fragments[41] (Figure (Figure44). Renshaw AA. Leibowitz Fine-needle aspiration (FNA) has an essential role in the evaluation of euthyroid patients with a thyroid nodule. One nucleus has an apparent intranuclear pseudoinclusion (arrow). When evaluating an undifferentiated carcinoma using immunocytochemistry a basic immunopanel should include cytokeratins, calcitonin, leucocyte common antigen, carcinoembryonic antigen, thyroglobulin, chromogranin, and TTF-1. Understanding the capabilities and potential within each component may explain both the process and usefulness of obtaining optimal specimens and elucidate exactly how tissue is evaluated. One subcategory includes cases with a microfollicular pattern and minimal colloid, that is, follicular lesion of undetermined significance (FLUS). In some cases more diffuse but mild nuclear changes may exist with nuclear enlargement, crowding, and pallor, but without other characteristics, such as nuclear contour irregularities, grooves and nuclear pseudoinclusions, suggestive of a PTC. American Society of Hematology. Chemotherapy or radiotherapy usually cannot change the dismal prognosis of this cancer. Should atypical follicular cells in thyroid fine-needle aspirates be subclassified? Aspirate slides are also used for cytochemical and iron stains. The management of cases with papillary microcarcinomas, i.e., tumors less than 1.0 cm in diameter, is still controversial. Yang J, Schnadig V, Logrono R, Wasserman PG. Auger M, Stelow EB, Yang GCH. On the other hand a definitive diagnosis of a low-grade lymphoma (usually a MALT lymphoma) is even more difficult. Received 2015 May 24; Revised 2015 Nov 19; Accepted 2015 Dec 9. Ultrasonography-guided core needle biopsy for the thyroid nodule: does the procedure hold any benefit for the diagnosis when fine-needle aspiration cytology analysis shows inconclusive results? Hrthle cell carcinoma is a better gold standard than Hrthle cell neoplasm for fine-needle aspiration of the thyroid: defining more consistent and specific cytologic criteria. The aspirates from anaplastic carcinoma do not pose any diagnostic difficulties. How does one separate cellular follicular lesions of the thyroid by fine-needle aspiration biopsy? Those that are resected represent a selected population of patients with repeated AUS results or patients with worrisome clinical or sonographic findings. The presence of true psammoma bodies with concentric laminations is highly suggestive of PTC; however the presence of psammoma bodies in cystic thyroid lesions is not diagnostic. Kocjan G, Cochand-Priollet B, de Agustin PP, Bourgain C, Chandra A, Daneshbod Y, Deery A, Duskova J, Ersoz C, Fadda G, et al. Hematology.org.https://www.hematology.org/education/trainees/fellows/trainee-news/2021/demystifying-the-bone-marrow-biopsy-a-hematopathology-primer(label-accessed May 01, 2023). %%EOF The morphologic findings are very similar to that of the aspirate smear, with the caveat that it only represents the cells that slough off. Any specimen that contains abundant colloid is adequate (and benign), even if six groups of follicular cells are not identified: a sparsely cellular specimen with abundant colloid is, by implication, a predominantly macrofollicular nodule and therefore almost certainly benign. It furthers the University's objective of excellence in research, scholarship, and education by publishing worldwide, This PDF is available to Subscribers Only. Seventeen . PK Unlike the core biopsy, decalcification is not required for the clot section. Nayar R, Ivanovic M. The indeterminate thyroid fine-needle aspiration: experience from an academic center using terminology similar to that proposed in the 2007 National Cancer Institute Thyroid Fine Needle Aspiration State of the Science Conference. CellMapper is a crowd-sourced cellular tower and coverage mapping service. . The nuclei are hyperchromatic, uniform in size and shape, and with indinstinct nucleoli. Inclusion in an NLM database does not imply endorsement of, or agreement with, An explicit statement of adequacy is optional. These alterations were made in order for the British system to be analogous to the BSRTC[11,16], although in other countries these modifications have not be totally embraced. Baloch Rubenfeld Thyroid nodules is a very usual clinical problem, as it is diagnosed in approximately 60% of the general population in Western countries[1]. "Demystifying the Bone Marrow Biopsy: A Hematopathology Primer, 01 May. Therefore, in the majority of patients in the AUS/FLUS category (72%-80%) the diagnosis will be resolved by repeat FNA, although 20%-28% of them will have AUS/FLUS on the repeat aspirate and thus require surgery. As with the Bethesda System for cervical cytology, it is expected that subsequent workshops will lead to further refinements to this framework. What is the hematopathologist looking for when assembling all the parts to report back in consultation with you? Two-dimensional fixed tissue specimens from the biopsy and clot are easily stained with immunohistochemical methods while three-dimensional, liquid cellular content can be assessed with flow cytometry. However, the percentage of the cases classified into the TIR 3/DC IV (follicular proliferation/neoplasm) category was substantially smaller (4.6%) in the 5-tiered system compared with the 6-tiered system (23.8%). It is critical that cytopathologists communicate thyroid FNA interpretations to referring physicians in terms that are succinct, unambiguous, and clinically helpful. Gupta Baloch Lee TI, Yang HJ, Lin SY, Lee MT, Lin HD, Braverman LE, Tang KT. Alexander The double needle from the same aspirate procedure is used to cut a core biopsy of optimal length (longer is better; i.e., more data). Venkatesh YS, Ordonez NG, Schultz PN, Hickey RC, Goepfert H, Samaan NA. HHS Vulnerability Disclosure, Help of value in acquiring a cellular sample, possibly due to increasing hemodilution. This PTC variant is a circumscribed thyroid tumor with papillary architecture and lymphoid follicles that mimics a Warthin tumor of the parotid gland. Inadequate cellularity is defined as the presence of less than 6 groups of well-preserved follicular cells on each of at least two slides; (2) DC II Benign (Figure (Figure1).1). Report of the Thyroid Cancer Guidelines Update Group. The AUS/FLUS category in the Bethesda system, represents aspirates that contain follicular, lymphoid, or other cell types with architectural and/or nuclear atypia that is more pronounced than that observed in benign lesions yet not sufficient to be characterized as suspicious for follicular neoplasm (SFN), or suspicious for malignancy[10]. Preoperative diagnosis of benign thyroid nodules with indeterminate cytology. Papillary structures are not as common as it was believed, because intact papillae are often too large to enter the fine needle or are disrupted during the preparation of the smears. The significance and clinical value of a CFO result depend in large part on sonographic correlation. Reduce red blood cells in smears iii. A malignant thyroid FNA diagnosis accounts for 4%-8% of all thyroid FNAs, the majority of which are PTCs, and these patients will require thyroidectomy[53]. . Mazzaferri EL. Primary angiosarcoma of breast: A case report and literature review. The nuclear chromatin is similar to that seen in other neuroendocrine tumors, i.e., salt and pepper type (Figure (Figure7).7). After this therapy the patients serum thyroglobulin levels should fall to undetectable levels. This interpretation applies to cellular samples that are composed exclusively (or almost exclusively) of Hrthle cells. endstream endobj startxref S It reduces the rate of unnecessary thyroid surgery for patients with benign nodules and appropriately triages patients with thyroid cancer to appropriate surgery. CS et al. The cellular sample is typically monomorphic, although some specimens may appear pleomorphic; the cells are usually small or medium-sized, noncohesive, and contain an eccentrically located nuclei[35]. A benign follicular nodule is the most common benign pattern that is, an adequately cellular specimen composed of varying proportions of colloid and benign follicular cells arranged as macrofollicle and macrofollicle fragments. There are cyst-lining cells that may appear atypical owing to the presence of nuclear grooves, prominent nucleoli, elongated nuclei and cytoplasm, and/or intranuclear cytoplasmic inclusions in an otherwise predominantly benign-appearing sample.16. government site. As a result they may be not diagnosed through the FNA test, resulting in a false-negative test[44]. VA A: No. The tumor cells show nuclear elongation, chromatin clearing, but nuclear grooves and inclusions are rare[40]. Diagnostic challenges in fine-needle aspiration and surgical pathology specimens. Different cell types of neurons form complicated circuits in the brain. The 2-day live conference in October 2007, attended by 154 registrants including pathologists, endocrinologists, surgeons, and radiologists, gave the committees an in-depth opportunity to present their conclusions and debate controversial areas. VA Jing X, Michael CW, Pu RT. "American Society of Hematology. The most widely known is the SIAPEC-IAP thyroid reporting system, which is also consists of 5 diagnostic classes[12]. The sensitivity of thyroid FNA for medullary thyroid carcinoma (MTC) is considered high, actually it is higher than the sensitivity of FNA for PTC[36]. (iii) Cytologic and architectural atypia: The differential diagnosis for the latter includes hyperplastic adenomatoid nodule with Hurthle cell change, Hurthle cell adenoma, and Hurthle cell carcinoma; (5) DC V Suspicious for malignancy. Hahn SY, Shin JH, Han BK, Ko EY, Ko ES. However; less than 10% of them represent malignant tumors. The second subcategory includes cases with nuclear atypia, such as the presence of occasional nuclear grooves, nuclear crowding, and abnormal chromatin pattern, which are characteristics of papillary carcinoma (PTC). While the V600E and K601E mutations were almost equally observed in the AUS/FLUS category, there was a slight predominance of K601E mutation in SFN/SHN category. et al. Surgical intervention consisted of a 15 7 7-cm segmental mastectomy specimen that contained a large, ill-defined, irregular pink-tan . However, in almost 20% to 28% of AUS/FLUS cases, a repeat thyroid FNA will again be characterized as AUS/FLUS[27,28]. Cellularity may in part be due to the LBC technique in comparison with smears made after sedimentation, . Thus, the maximal number of spermatids can be packed and supported by a fixed population . A complete bone marrow biopsy examination usually involves the review of these four specimens noted here in a slide tray: A) marrow aspirate smear, B) marrow core biopsy, C) clot section, and D) touch imprint preparation. Each of these four specimens have their strengths and limitations; therefore, they should be assessed separately. Fleisher Broome JT, Solorzano CC. While there are advantages and disadvantages to each component regarding turnaround time, comprehensiveness, and diagnostic utility (Table), their synergism provides ample information for your consultant hematopathologists. The Bethesda system for reporting thyroid cytopathology: An experience of 1,382 cases in a community practice setting with the implication for risk of neoplasm and risk of malignancy. Patients with the sporadic forms of MTC or the familial MTC are most often middle-aged (mean age 50 years old), except in familial cases, in which they are relatively younger. If the nodule is almost entirely cystic, with no worrisome sonographic features, an endocrinologist might proceed as if the CFO were a benign result. The general category malignant is used whenever the cytomorphologic features are conclusive for malignancy. Careers, Unable to load your collection due to an error. Last but not least, repeated FNAs will lead to a diagnosis in 72%-80% of indeterminate cases where repeated FNAs were needed. Intussusception in an adult revealing a Vanek's tumor: A case report. Inadequate samples are reported as nondiagnostic (ND) or unsatisfactory (UNS). In general, patients diagnosed with FNA test as having PTC, are usually managed operatively, but the final decision of the type of resection (lobectomy vs total thyroidectomy) depends on numerous coexisting factors. "Demystifying the Bone Marrow Biopsy: A Hematopathology Primer." To help the cells stay on the slide: a. add acetic acid to the fixative b. fix in neutral Q: Can your pathologist give you a preliminary assessment of the aspirate smear or flow cytometry analysis on the same day as a procedure if it was performed early in the morning? IR The nuclear chromatin appears as salt and pepper type in a medullary carcinoma case ( 40 pap stain on ThinPrep slide) (diagnostic categories VI). The many faces and mimics of papillary thyroid carcinoma. ME . LiVolsi Since it is a two-dimensional specimen and reveals cells in cut section, it is not ideal for assessment of dysplasia (a marrow aspirate is preferred), but it is extremely useful in identifying possible reasons for a dry tap (a term for when liquid marrow cannot be aspirated during the bone marrow procedure), since the architecture can show fibrosis, sheets of cohesive plasma cells, or metastatic tumor which could result in a dry tap.