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Cytodiagnosis of distant metastases from follicular thyroid carcinoma
Author(s) -
Gupta Parikshaa,
Bardia Anand,
Rajwanshi Arvind,
Nijhawan Raje,
Srinivasan Radhika,
Gupta Nalini,
Nahar Saikia Uma,
Dey Pranab
Publication year - 2016
Publication title -
diagnostic cytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.417
H-Index - 65
eISSN - 1097-0339
pISSN - 8755-1039
DOI - 10.1002/dc.23412
Subject(s) - medicine , pathology , thyroid , thyroid carcinoma , cytopathology , fine needle aspiration , eosinophilic , malignancy , metastasis , carcinoma , follicular phase , cytology , pleomorphism (cytology) , anaplastic carcinoma , radiology , biopsy , cancer , immunohistochemistry
Introduction Follicular carcinoma of the thyroid is second most common primary malignancy of the thyroid gland after papillary carcinoma and metastasis is uncommonly seen in these patients. Aims and objectives To describe the cytomorphologic features for the accurate diagnosis of distant metastases from follicular carcinoma of thyroid. Materials and methods A total of 10 aspirates reported as metastatic follicular carcinoma of thyroid were reviewed for the available clinical and radiological details. Results All the patients were females. Six of these patients presented with subcutaneous and soft tissue swellings, one presented with a lung mass, one with right breast swelling, one with lumbar vertebral lesion and one with left iliac bone involvement. The cytology smears revealed tumour cells predominantly arranged in a repetitive microfollicular pattern with some scattered individually and in sheets. The tumour cells were small, had mild nuclear pleomorphism, round nuclei, low nuclear‐cytoplasmic ratio, fine chromatin, inconspicuous nucleoli, and scanty to moderate amount of cytoplasm with some showing marginal vacuoles with “fire‐flare” appearance. Occasional microfollicles showed scanty eosinophilic colloid in the center. Conclusions Identification and establishment of a correct clinical diagnosis of a distant metastasis from a follicular thyroid carcinoma is a challenging task. We believe that with prior knowledge of characteristic cytologic features, such metastases can be rapidly and accurately diagnosed by fine needle aspiration cytology. Diagn. Cytopathol. 2016;44:108–112. © 2015 Wiley Periodicals, Inc.