May Be Caused by

 Common

Amebiasis

Ascites

Carcinoma

Crohn disease

Dermoid

Endometriosis

Lymphadenopathy

Lymphogranuloma venereum

Ovarian cyst

Ovarian tumor

Pelvic abscess

Pelvic inflammatory disease

Pelvic neoplasm

Peritoneal metastasis

Schistosomiasis

Teratoma

Uterine fibroid

 Uncommon

Aneurysm of internal iliac artery

Hematocolpos

Hematoma

Hydatid cyst

Lymphocele

Pelvic lipomatosis

Rectovaginal fistula

Retroperitoneal fibrosis

Sling repair for rectal prolapse

Urinoma

Vaginal carcinoma