Small Bowel Obstruction Secondary to Obturator Hernia Preoperatively Diagnosed by Ultrasound

To the Editor： A frail 74-year-old woman visited the emergency department with a chief complaint of＂intermittent abdominal pain for 6 days and vomiting for 2 days＂. She described her symptoms as a colicky lower abdominal pain that occurred 6 days ago, recurred several times, and resolved spontaneously, but progressed to severe and sustained pain with vomiting 2 days bet＇ore visiting the hospital. The lower abdominal pain also radiated down to the right medial thigh. Physical examination of the abdomen revealed distention, with intestinal pattern and positive bowel sounds. Tenderness on tile lower abdomen was identified, which radiated to the right medial thigh. There was no palpable mass in the abdominal or groin area.