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  • Title: Endoscopic ultrasound-guided fine needle aspiration diagnosis of metastatic sex cord tumor with annular tubules: a case report.
    Author: Ryan LJ, Pambuccian SE, Lai R, Gulbahce HE.
    Journal: Diagn Cytopathol; 2006 Aug; 34(8):576-9. PubMed ID: 16850486.
    Abstract:
    The cytologic findings of a paratracheal metastasis from a malignant sex cord tumor with annular tubules (SCTATs) diagnosed by endoscopic ultrasound guided fine needle aspiration are described. Cytologic features of SCTATs include the presence of highly cellular aspirates forming simple and complex rosette-like structures around central rounded hyaline material, small nucleoli, and prominent nuclear grooves. These cytologic findings are clearly distinct from the poorly formed rosette-like structures of granulosa-cell tumors and are reminiscent of the low-power appearance of the cribriform variant of adenoid cystic carcinoma. The fine needle aspiration cytologic features of only two other cases have been previously described and, to the best of our knowledge, this is the first case reporting the cytologic diagnosis of a distant metastasis of a SCTATs by endoscopic ultrasound-guided fine needle aspiration. In this case, the distinctive and characteristic cytologic features have allowed the proper diagnosis of a distant metastasis of SCTATs.
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