[Emergency combined surgery for acute appendicitis and cystic lesions of small pelvis]

To determine the optimal surgical approach for acute appendicitis and concomitant cystic lesions of small pelvis.

The authors report the results of emergency combined surgery on abdominal and pelvic organs in 995 patients for the period from 1990 to 2020 (30 years). Acute appendicitis was diagnosed in 698 (70.15%) patients. Cystic lesions of small pelvis were observed in 286 (28.7%) patients: follicular cyst - 133 (46.5%), serous cyst - 91 (31.8%), corpus luteum cyst - 42 (46.4%), dermoid cyst - 20 (7.0%), endometrioid cyst - 3 (1.0%) cases. Catarrhal appendicitis was diagnosed in 10 (1.4%) patients, phlegmonous appendicitis - 685 (98.1%), gangrenous appendicitis - 3 (0.4%) patients. All patients with pyoinflammatory diseases of small pelvis had long-term history of gynecological diseases.

Cystic lesions of small pelvis can undergo malignant transformation. Therefore, surgical intervention is determined by surgeon together with gynecologist. Tree large endometrioid cysts (20-25 cm) were malignant. These patients also had adenocarcinoma of sigmoid colon. Malignant neoplasm resulted acute ileus, and the cysts were incorporated into pyogenic membrane. Extensive adhesive process was also observed. These aspects caused significant technical difficulties during resection of these cysts. Postoperative complications occurred in 2.31% of patients.

Prolonged therapy and follow-up of patients with urgent concomitant inflammatory diseases of abdominal cavity and small pelvis (chronic nonspecific salpingitis, diffuse pelvic endometriosis, ovarian cysts, etc.) can lead to development and growth of cystic lesions of small pelvis. These cysts may be complicated by subsequent malignant transformation.