患者 男,35岁。一月前右下腹持续性绞痛,阵发性加重,治疗缓解后右下腹摸到肿块,于1992年3月11日入院。查体:神清,浅表淋巴结不肿大。心肺无异常。腹软,肝脾未触及,右下腹压痛,可触及鸡蛋大包块。血常规正常。胸片:纵隔无肿块。术中见阑尾增粗、增长、质硬,按阑尾类癌行回盲部及阑尾肿物切除。阑尾似梨形,有弯曲,根部最细处直径1.5cm,远端膨大处约8×5.5×5.5cm。肿物切面呈细腻鱼肉样,无包膜。镜下:其膨大处已无阑尾正常组织形态,瘤细胞弥漫成片,不呈巢状,由均匀一致大小不等的淋巴母细胞样细胞构成,平均6～9μm,有少量胞浆。油镜下:核膜较薄,染色质颗粒细,部分核呈花瓣状,分叶 Male patient, 35 years old. After 1 month of continuous right lower quadrant cramps, paroxysms worsened, and a mass was felt in the right lower quadrant after remission, and was admitted on March 11, 1992. Examination: God clear, superficial lymph nodes are not swollen. No abnormalities in heart and lungs. The abdomen is soft, the liver and spleen are not touched, and the lower right abdomen has tenderness and can touch the large mass of eggs. Normal blood. Chest radiograph: There are no lumps in the mediastinum. During the operation, the appendix was thickened, grew, and hardened. The ileocecal and appendix tumors were removed by appendiceal carcinoid. The iris is pear-shaped, curved, with a diameter of 1.5 cm at the smallest root and 8 x 5.5 x 5.5 cm at the distal swelling. The cut surface of the tumor was delicate and fish-like, without a capsule. Microscopically, the enlargement had no normal morphology of the appendix. The tumor cells diffuse into a patch and did not appear nested. The lymphoblastoid cells consisted of uniform and unequal size, with an average of 6-9 μm and a small amount of cytoplasm. Oil microscopy: the nuclear membrane is thin, chromatin is fine, and some of the nucleus is petal-like.