Thyroid tumors: Cytomorphology of papillary carcinoma

Authors

  • Arvind Kaur M.D.,

    Corresponding author
    1. Department of Pathology, Maulana Azad Medical College, Bahadur Shah Zafar Marg, New Delhi, India
    • C-215, Defence Colony, New Delhi 110024, India
    Search for more papers by this author
  • Gita Jayaram M.D., M.I.A.C.

    1. Department of Pathology, Maulana Azad Medical College, Bahadur Shah Zafar Marg, New Delhi, India
    Search for more papers by this author

Abstract

Of 2,012 fine-needle aspirations (FNA) of the thyroid performed by the authors between the years 1984 and 1988, a detailed cytomorphologic analysis of 9.5 cases diagnosed as neoplastic on histology and/or cytology and those that received an equivocal cytodiagnosis is presented. Discussed are papillary carcinomas (28 correctly diagnosed on FNA and two false positives).

In most of the cases of papillary carcinoma, the cytologic features were characteristic enough to enable accurate tumor typing. Follicular cells with dense cytoplasm, well defined cell margins, and presence of papillary clusters were the most consistent features obsewed. Intranuclear cytoplasmic inclusions, though characteristic, were found in only 66.6% of cases.

In cystic papillary carcinomas (seven cases) study of the cyst wall as well as the cyst contents enabled an accurate cytodiagnosis. Two cases of multinodular goiter with papillary hyperplasia could not be distinguished with certainty from papillary carcinoma on cytologic grounds.

Ancillary