title: Basaloid carcinoma of the pancreas.
abstract: A case of basaloid carcinoma of the pancreas in a 26-year-old woman is reported. The tumour was constituted by solid nests of relatively uniform neoplastic cells with hyperchromatic nuclei and scant cytoplasm, showing distinct peripheral palisading. There were necrotic areas and deposition of hyaline material, suggesting a basement membrane-like substance. Small foci of clear-cut squamous differentiation were present. Tumour cells were positive for cytokeratin 14 and P63 and negative for neuroendocrine and acinic cell markers. Ultrastructurally, the tumour was constituted by polygonal cells with round nuclei containing clumped chromatin. Occasional tight junctions and keratin filaments were present. Basaloid carcinomas may arise in several sites of the body, the most frequent being the anus and oesophagus, and have poor clinical outcome. The present case appears to be, to the best of our knowledge, the first documented example in the literature of basaloid carcinoma of the pancreas.
authors.affiliation: Section of Pathology, Department of Oncology, University of Bologna, Bellaria Hospital, Via Altura 3, 40139 Bologna, Italy. gianluca.marucci@ausl.bologna.it
authors.forename: Gianluca
authors.initials: G
authors.lastname: Marucci
authors.forename: Christine M
authors.initials: CM
authors.lastname: Betts
authors.forename: Luciano
authors.initials: L
authors.lastname: Liguori
authors.forename: Vincenzo
authors.initials: V
authors.lastname: Eusebi
mesh_terms: D000328:Adult; D001859:Bone Neoplasms / Q000473:pathology; D002280:Basal Cell Carcinoma / Q000378:metabolism* / Q000556:secondary* / Q000648:ultrastructure; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D008207:Lymphatic Metastasis / Q000473:pathology; D046529:Microscopy, Electron, Transmission; D019042:Muscle Neoplasms / Q000473:pathology; D010190:Pancreatic Neoplasms / Q000378:metabolism* / Q000473:pathology* / Q000648:ultrastructure
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