Fig. 1

a The results of PET showed that the intestinal soft tissues in the ileocecal area are slightly parametrized and the metabolism is slightly active. b The pictures of ileocecal part from open surgery in September 11, 2013. c The surgically resected specimen. d Histopathological examination of colon, the cavity is filled with mucus like mucus cyst. e, f Pelvic MRI showing multiple cystic lesions in the bilateral attachment area (arrows). g The surgically resected specimen in November 12, 2015. h Histopathological examination of surgically resected specimen, the cavity is filled with mucus like mucus cyst