Features of benign granular cell tumor on fine needle aspiration.

Published

Journal Article

OBJECTIVE: To describe the cytomorphologic features of benign granular cell tumor (GCT) on fine needle aspiration (FNA) biopsy and discuss the differential diagnosis. STUDY DESIGN: We reviewed three fine needle aspirates of surgically confirmed benign GCT. Immunocytochemical staining for S-100 was performed on the aspirate smear in one case. RESULTS: Two GCT were thigh lesions, where lipoma and fibromatosis were the leading clinical diagnosis, and the third was a breast mass clinically suspected to be a fibroadenoma. All FNA specimens were highly cellular and composed of fairly uniform cells with eccentric, round-to-slightly oval nuclei and abundant, finely granular cytoplasm. The cells were fragile, with stripped nuclei in a background of finely granular material. Occasional cells with nuclear pleomorphism and small-but-conspicuous nucleoli were identified. There was no evidence of necrosis or mitotic activity. Rare intranuclear cytoplasmic inclusions were identified in two cases. The granular cells were immunoreactive for S-100 in the case studied. CONCLUSION: Benign GCT has a distinctive cytomorphologic appearance that permits its diagnosis on FNA. High cellularity, occasional cells with nuclear pleomorphism and prominent nucleoli are features that can be present in benign GCT. Mitotic figures and necrosis should be identified before a diagnosis of malignancy is rendered.

Full Text

Duke Authors

Cited Authors

  • Liu, K; Madden, JF; Olatidoye, BA; Dodd, LG

Published Date

  • July 1999

Published In

Volume / Issue

  • 43 / 4

Start / End Page

  • 552 - 557

PubMed ID

  • 10432874

Pubmed Central ID

  • 10432874

International Standard Serial Number (ISSN)

  • 0001-5547

Digital Object Identifier (DOI)

  • 10.1159/000331146

Language

  • eng

Conference Location

  • Switzerland