Large prostatic utricle cyst with calculus in a child: a rare entity

Abstract

Introduction: Prostatic utricle cyst (PUC) is a rare entity associated with congenital urogenital anomalies. In some cases, prostatic utricle is strikingly enlarged and present as a cystic lesion in perineum or in pelvic cavity posing diagnostic dilemma. Very few case reports are available in the published literature. Case report: We report a case of 12 year old male with complaints of post void dribbling of urine since birth and feeling of incomplete emptying. Clinical examination revealed ambiguous genitalia with perineal hypospadias and bilateral undescended testes. Ultrasound pelvis revealed a well-defined midline cystic lesion posterior to the urinary bladder with an intra-lesional calculus. MRI demonstrated a narrow communication tract between the cystic lesion and posterior urethra suggesting the possibility of PUC. Complete excision of the cyst was performed with ligation of the communicating tract and subsequent histo-pathological examination confirmed prostatic utricle cyst. Postoperative period was uneventful with complete resolution of the pre-operative symptoms. None of the symptoms recurred on follow up of the patient after three month of surgery. Conclusion: Prostatic utricle cyst should always be kept in the differential diagnosis of midline cystic lesions in young males specially if associated with uro-genital anomalies. Thorough clinical and imaging evaluation is needed to establish the diagnosis. MRI is the imaging modality of choice to differentiate utricle cyst from other midline cystic lesions of the pelvis.