卵管膨大部に生じたpolypoid endometriosisの1例

A case of polypoid endometriosis of ampulla of the fallopian tube

polypoid endometriosisは子宮内膜症のまれな病態の一つで，充実性腫瘤を形成し，時に進展する。腸管や腸管膜，卵巣，子宮漿膜に好発し，卵管での報告は少ない。そもそも卵管子宮内膜症は稀少部位子宮内膜症の一種である。今回我々は，右卵管膨大部に生じた症例で，子宮内膜症の発生を考えるうえで興味深い1例を経験したため，若干の文献的考察を加えて報告する。

A woman in her 40s visited our hospital with a primary complaint of irregular genital bleeding. Laboratory studies showed an elevated serum CA125 level. MRI revealed a polypoid mass in the right fallopian tube with hematosalpinx. The mass displayed contrast enhancement with low signal and some punctate high signal on fat–suppressed T1–weighted images, mildly high signal on T2–weighted images, high signal on diffusion–weighted images, and mildly low ADC. She underwent laparoscopic resection. She was diagnosed with polypoid endometriosis arising in ampulla of fallopian tube.