Periureteric Mass in a Treated Case of Papillary Carcinoma of Thyroid: A Diagnostic Dilemma

Abstract

Endometriosis is the presence of normal endometrial glands and stroma outside the endometrium, seen in women in the reproductive age group. Endometriosis is common in the pelvis in the pouch of Douglas, rectum, urinary bladder, and uterosacral ligaments. Although extrapelvic endometriosis is uncommon, endometriosis at extrapelvic sites such as the gastrointestinal tract, urinary tract, lung, skin, brain, and scar site has been reported and can mimic other benign and malignant lesions. It is a difficult diagnosis when patients have a preexisting neoplasm as metastasis can be a differential. The clinical history, imaging features, and a strong suspicion of this entity in the reproductive age group help accurate diagnosis of this entity. We present a rare case of deep pelvic (periureteral) endometriosis in a 41-year-old woman with history of papillary carcinoma of the thyroid gland causing diagnostic dilemma on imaging and histopathology and also discuss briefly the imaging findings of endometriosis.

Keywords

• endometriosis
• extrapelvic
• periureteral