Myofibroblastoma (MFB) is a benign tumor of the mammary stroma with predominant myofibroblastic differention. The cytologic reports of MFB are very few in the available literature. From the cytodiagnostic point of view about 21 cases of MFB with cytological evaluation by fine-needle aspiration cytology (FNAC) have been encountered in the English-language literature: A 35-year-old woman presented with lump in the left breast. FNAC showed mild degree of pleomorphism with occasional groups with fibrous stroma and tumoral cells. A few benign epithelial cell groups were seen. Hematoxylin-eosin-stained sections of cell block preparation from the aspirate showed fascicles of spindle cells forming whorl structures. Three months later, excision biopsy was performed. The diagnosis was a classic variant of MFB. On immunohistochemical examination, sections were found to be highly positive for vimentin, CD34, and bcl- 2. In light of these findings, cell block material was retrospectively reviewed both morphologically and immunhistochemically. The findings of resection and cell block material were found to be very similar. MFB may cause a potential diagnostic pitfall while interpreting FNAC due to its wide differential diagnosis spectrum. We concluded that cytology and cell block findings complement each other. Diagn. Cytopathol. 2016;44:1064-1069. © 2016 Wiley Periodicals, Inc.

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Parotid duct fistulas (PDFs) are rare and have various causes such as gunshot wounds and human and animal bites; they may also be congenital. We have not found previous publications on bilateral PDF. Our patient, although young, also had generalized pigmentation characteristic of aging and thick, dry, wrinkled skin, as well as pyoderma. Biochemical analysis was performed on discharge from the patient's face, and histopathologic and immunologic studies were done. The fistulas were treated by intraoral fistulization. Cephalosporins were given to the patient for 5 days postoperatively to treat the pyoderma.

Objective: To evaluate whether there are differences in invasive micropapillary carcinoma (IMPC) and invasive ductal carcinoma-NOS (IDC-NOS) according to the clinicopathological features and prognosis including molecular subtypes. Study Design: Descriptive study.