[ABDOMINAL MASS AND ASCITES AS RISK FACTORS OF PELVIC ORGAN PROLAPSE].

(Objective) A rise of intra-abdominal pressure may exacerbate pelvic organ prolapse (POP) as well as abdominal hernias. This paper aims to assess the possible risk factors of an abdominal mass and ascites as comorbidities of POP. (Methods) We retrospectively reviewed the medical charts of 2,748 POP patients between 2010 and 2016 and extracted eight cases (0.3%) with abdominal mass and ascites as risk factors. (Results) All eight patients were multiparous women aged between 52 and 88 years old. Three patients (cases 1-3) were referred to us for surgery related to POP from gynecologists with previously undetected ovarian tumors. In case 1, we noticed abdominal distension during a transvaginal mesh (TVM) operation. Postoperative CT and MRI scans confirmed the presence of an ovarian tumor 24 cm in diameter (mucinous cystic tumor, borderline malignant). In case 2, transvaginal ultrasound could not detect the ovaries, but a transabdominal ultrasound, which was done to investigate urinary retention, revealed an ovarian tumor 18 cm in diameter (mucinous cystic adenoma). In case 3, a detailed patient history outlined the patient's sense of abdominal fullness and a transvaginal ultrasound found ovarian cancer 10 cm in diameter with ascites (serous adenocarcinoma). Case 4 suffered from autosomal dominant polycystic kidney disease (ADPKD) with large liver cysts. The patient underwent a TVM operation to treat the presenting POP with unusual bleeding (460 g). Case 5 had abdominal distension and cystocele due to huge abdominal mass (recurrence of malignant lymphoma); she desired conservative follow-up to tumor and POP due to old age (88 years old). Two patients suffered from end-stage cancer (case 6: colorectal cancer, case 7: breast cancer) with liver metastasis. In cases 6 and 7, the patients' POP worsened with the increase of ascites, which was managed conservatively. Case 8 presented with liver cirrhosis related ascites and a total uterine prolapse, simultaneously. Colpocleisis was cancelled due to the onset of hepatic coma. (Conclusions) Abdominal mass and ascites are risk factors of POP by increasing abdominal pressure and lesions such as ovarian tumors may present as POP. Even when POP patients are referred from gynecologists, a vaginal examination, carefully recorded patient history, and abdominal palpation should be included as part of a standard treatment regimen to reliably exclude underlying diseases.