This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney and ureter, Subject name: Surgery
[{'content': 'Classic symptom of ectopic ureter in females \nSelect and explain. \nA. Painful defecation, B. Urinary frequency, C. Ureteral incontinence with otherwise normal voiding, D. Labial swelling', 'role': 'user'}, {'content': 'Answer: C \nExplanation: ECTOPIC URETERAL ORIFICE * Around 80% is associated with a duplication collecting system. * More common in females. Location * Males: Prostatic or posterior urethra (MC), lateral in bladder. * Females: Anterior urethra (MC), vestibule, vagina. Clinical Features * Females: continuous incontinence with an otherwise normal voiding . * Males: MC presentation Is UTI, no urinary incontinence . Diagnosis * IVP: Drooping Lily sign Treatment * Mainly expectant, Ureteric reimplantation or pole nephrectomy depending on moiety function.', 'role': 'assistant'}]