Vestigial structures of the embryologic sex duct system may form cysts that produce symptoms requiring surgical intervention. Torsion of these remnants may occur in children or adults of both sexes. Two recent cases of hydatid torsion prompted review of the sites of these remnants and their embryologic origins.
Report of Cases.—Case 1.—An 11-year-old girl was admitted to the hospital because of right lower quadrant pain and anorexia. For two weeks she had recurrent attacks of pain, starting in the epigastrium, and localizing in the right lower quadrant, without fever, vomiting, change in bowel habits, or dysuria. On examination there was exquisite tenderness in the right lower quadrant with voluntary guarding and no rebound tenderness. On rectal examination there was a tender, walnut-sized mass in the right adnexa. White blood cell count and urinalysis were unremarkable. Surgery was performed with a diagnosis of torsion of an ovarian cyst.
BARLOW B, FAJOLU O, LEBLANC W. Hydatid Torsion. Am J Dis Child. 1978;132(12):1216–1217. doi:10.1001/archpedi.1978.02120370068018
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