[A papillary-cystic neoplasm of the pancreas, a calcifying-inverted variant]

A calcifying-inverted variant of a papillary-cystic neoplasm (PCN) is reported, presenting presented the same histological and cellular features, and similar immunohistochemical characteristics and the ultrastructure of a papillary-cystic neoplasm of the pancreas (PCN) that usually afflicts younger women. It took the form of a partiality of a capsule, a common trait for a PCN, and proliferated on infiltrating the pancreatic parenchyma. The case involves a 51-year-old woman, whose PCN was detected by an abdominal X-ray that showed a calcified shadow in a health examination, though there was no palpable abdominal tumor. Usually, a PCN is detected by palpation tumor. Thus, the author demonstrates the existence of PCN variants, characterized by intrapancreatic infiltrating proliferation and an incomplete cyst formation or intratumoral calcified foci, and reports on variants of the usual PCN.