Ectopic endometriosis presenting as a breast abscess in a teenager

Iatrogenic Endometriosis of the Breast Mimicking Fat Necrosis: A Case Report

A female patient with a history of ductal carcinoma in situ in the left breast, status-post bilateral mastectomy with deep inferior epigastric perforator artery flap reconstructive surgery, presented with a right breast asymmetry concerning for fat necrosis. Histological analysis revealed the presence of benign glands and associated stroma within fibroadipose tissue, confirmed as endometriosis by immunohistochemical analysis. Further investigation revealed that the patient had a previous diagnosis of endometriosis associated with a cesarean section scar that likely seeded the ectopic endometrial glands into a tertiary site by utilizing abdominal tissue that may have harbored endometriosis.

Ureteral Endometriosis Presenting As Left Ureteral Obstruction: A Case Report

Ureteral endometriosis is a very rare but serious form of infiltrating endometriosis since the risk of urinary tract obstruction and secondary loss of renal function exists. Although not always possible, the clinical and radiologic assessment may help in obtaining a preoperative diagnosis.

We report the case of a 42-year-old woman with left ureteral endometriosis, revealed by left flank pain. Imaging revealed left obstructive uropathy with an endometriotic cyst of the left ovary and a spiculated lesion of the left parametrium. She underwent laparotomy, resection of the diseased ureter with primary re-anastomosis, resection of a left parametrial lesion and an endometriotic left ovarian cystectomy. The pathological assessment confirmed the diagnosis of ureteral endometriosis. Follow-up of the patient showed complete resolution with a stable, normal kidney function.

In conclusion, ureteral endometriosis involvement is infrequent but should be included in the differential diagnosis in a premenopausal woman with ureteral obstruction of unknown cause. An early diagnosis and obstruction relief are critical to a successful outcome.