患者,男,37岁。因右下腹包块3个月余,于1986年5月3日入院。3个月前出现右下腹隐痛,并触及一包块。大便每天2～3次,干稀便交替,但无脓血。近1个月包块增大而来院求治。查体:体质消瘦,无黄染,表浅之淋巴结无肿大。心肺无异常。腹部稍隆起,以右下腹明显。触诊在右下腹部有一约12 Patient, male, 37 years old. Due to the right lower abdomen mass for more than 3 months, he was admitted to hospital on May 3, 1986. Three months ago, there was pain in the right lower abdomen and one mass was touched. Stools 2 to 3 times a day, dry and thin alternate, but no pus. In the past one month, masses increased and they came to the hospital for treatment. Physical examination: physical weight loss, no yellow staining, no superficial lymph nodes. No abnormalities in heart and lungs. The abdomen slightly bulges and is evident in the right lower abdomen. Palpation has about 12 in the right lower abdomen