%0 Case Reports %T Herlyn-Werner-Wunderlinch: An unusual presentation in a patient with Prader-Willi syndrome. %A Costa L %A Garcia-Grau E %A Toledo L %A Burgaya N %A Cos R %A Rojas M %A Giménez-Palop O %A Caixas A %J Endocrinol Diabetes Nutr (Engl Ed) %V 71 %N 4 %D 2024 Apr %M 38735678 %F 1.833 %R 10.1016/j.endien.2024.01.010 %X Herlyn-Werner-Wunderlich syndrome is an uncommon urogenital anomaly defined by uterus didelphys, obstructed hemi-vagina and unilateral renal anomalies. The most common clinical presentation is dysmenorrhoea following menarche, but it can also present as pain and an abdominal mass. Prader-Willi syndrome is a rare neuroendocrine genetic syndrome. Hypothalamic dysfunction is common and pituitary hormone deficiencies including hypogonadism are prevalent. We report the case of a 33-year-old female with Prader-Willi syndrome who was referred to the Gynaecology clinic due to vaginal bleeding and abdominal pain. Abdominal ultrasound revealed a haematometra and haematocolpos and computed tomography showed a uterus malformation and a right uterine cavity occupation (hematometra) as well as right kidney agenesis. Vaginoscopy and hysteroscopy were performed under general anaesthesia, finding a right bulging vaginal septum and a normal left cervix and hemiuterus. Septotomy was performed with complete haematometrocolpos drainage. The association of the two syndromes remains unclear.