title: Complicated ovarian cyst causing a diagnositic puzzle.
mesh_terms: D001062:Appendectomy; D002648:Child; D005260:Female; D006801:Humans; D010048:Ovarian Cysts / Q000150:complications / Q000175:diagnosis*; D010049:Ovarian Diseases / Q000209:etiology*; D011183:Postoperative Complications / Q000175:diagnosis; D014102:Torsion Abnormality