腸間膜原発神経内分泌癌の1例

A case of primary neuroendocrine carcinoma of the mesentery

神経内分泌腫瘍の好発部位は，呼吸器や膵・消化管で全臓器の約85％を占めるが^1），腸間膜原発はまれである。今回我々は腸間膜原発神経内分泌癌の1例を経験したので報告する。

A 50’s-year-old female presented with an abdominal mass with abdominal pain. CT and MRI revealed a well-defined mass adjacent to the stomach and the pancreas. Operation findings showed that the tumor was present in the transverse mesocolon. Pathologically, it was diagnosed as neuroendocrine carcinoma of the transverse mesocolon, large cell type. The most common sites of neuroendocrine neoplasms are the respiratory tract, pancreas and gastrointestinal tract, which account for about 85％ of all organs, but mesenteric primary tumors are rare.