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DOI: 10.5146/tjpath.2018.01457
Bronchial Carcinoid Tumors with Massive Osseous Metaplasia: A Case Report and Review of the Literature
Mine ÖZŞEN1, Ulviye YALÇINKAYA2, Elif Ülker AKYILDIZ2, Ahmet Sami BAYRAM3, Gökhan GÖKALP4
1Department of Pathology, Erzurum Regional Training and Research Hospital, ERZURUM, TURKEY
2Department of Surgical Pathology, Uludag University, Faculty of Medicine, BURSA, TURKEY
3Department of Thorax Surgery, Uludag University, Faculty of Medicine, BURSA, TURKEY
4Department of Radiology, Uludag University, Faculty of Medicine, BURSA, TURKEY
Keywords: Bronchial carcinoid tumor, Carcinoid variants, Osseous metaplasia

Bronchial carcinoid tumors are primary lung neoplasms thought to originate from neuroendocrine cells, i.e. Kulchitsky cells, in the bronchial mucosa, although the type of cellular origin has not been clearly understood. A 61-year-old male patient underwent surgery and microscopic examination of the specimen revealed an anastomosing trabecular bony structure among the nests of tumor cells with round nucleus, granular chromatin, and large eosinophilic cytoplasm. Our case has been deemed worthy of being presented as bronchial carcinoid tumor with exaggerated osseous metaplasia.

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