急速かつ予後不良な臨床経過を呈した膵腺房細胞癌の1例

A case report of acinar cell carcinoma of the pancreas showing rapid and unfavorable clinical course

腺房細胞癌はまれな膵悪性腫瘍であり画像所見，臨床経過ともに十分な蓄積がないのが現状である。画像診断にて質的診断ならびに治療方針を決定し得たものの急速かつ予後不要な臨床経過を呈した腺房細胞癌の症例を経験したので，文献的考察を含めて報告する。

A male patient in his 50s was admitted for scan of pancreas head mass lesion. The lesion showed weak early enhancement and prolonged enhancement on contrast-enhanced CT, hypo-intensity on T1-weighted imaging, hyper-intensity on T2-wighted imaging. Notably, spotty hypo-intensity area suspecting intra-tumoral hemorrhage was seen on T2^＊-weighted imaging. Endoscopic fine needle biopsy was performed under radiological diagnosis of acinar cell carcinoma. Final diagnosis was histologically confirmed.