P33.04: Non‐gynaecological pathology diagnosed with transvaginal ultrasound (TVU)

The aim of this study is to relate our experience with transvaginal ultrasound findings regarding pelvic pathologies unrelated to gynaecology. We reviewed our case series and we selected 4 cases of pelvic schwannomas, 2 cases of GIST (gastrointestinal stromal tumors) and 7 cases of post-operative urinoma. At TVU, pelvic schwannomas appeared as rounded masses, with a semi-solid structure having a regular border and intralesional hyperechoic areas. Vascularisation in all cases appeared well represented. Schwannomas usually appear fixed because of their retroperitoneal development. Differential diagnosis is with ovarian mass and broad ligament fibroids. GISTs at ultrasound can show a hyperechoic core due to mixoid degeneration or leiomyomas or microcystis into the mass. Posterior shadowing in usually uncommon like as signs of calcification. Often they present mixed solid and cystic components with or without necrosis, making it difficult at times to recognise the organ of origin of the neoplasm. The masses showed high vascularisation. Urinoma is a ‘pelvic pseudocyst’ due to ureteral injury and is identified mainly with the observation of an ‘intermittent flow’ entering the cavity of the ‘pseudocyst’ on colour Doppler examination. This sign was evident because of the fluid cavity surrounding the ureteral lesion. Not only can the genital tract be visualized during TVU, but with this imaging method it is possible to visualize other pathological conditions as well, including those unrelated to gynaecology.