Renal endometriosis mimicking a renal tumor in a pregnant patient

Renal endometriosis, if progressed is a serious localization of disease burden that can lead to urinary tract obstruction, with subsequent hydronephrosis leading to potential kidney loss. Diagnosis is elusive and relies heavily on clinical suspicion as endometriosis can occur with both minimal and extensive disease. Management technique varies but the goal is to salvage renal function and disease burden.