title: The doughnut sign: an ultrasound finding in pediatric intestinal Burkitt's lymphoma.
abstract: This paper describes a doughnut-like ultrasound (US) finding in pediatric intestinal Burkitt's lymphoma. A 9-year-old boy had a fist-sized, hard, non-movable mass in the lower abdomen. US showed a thickened, layered ring like a doughnut. The outer, low-level echoes seemed to be consistent with mucosa and muscle layers and the inner, high-level echoes seemed to be intraluminal air or mucus. The serum lactic dehydrogenase level was high. At surgery, a solid, hard tumor 15 x 10 cm in size was found in the jejunum. The intestinal wall was diffusely thickened with an intact mucosa. From this experience, the US doughnut sign may be a helpful diagnostic finding in pediatric intestinal Burkitt's lymphoma.
authors.affiliation: Division of Pediatric Surgery, Kinan General Hospital, Tanabe City, Wakayama, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Hasegawa
authors.forename: J
authors.initials: J
authors.lastname: Sumimura
authors.forename: S
authors.initials: S
authors.lastname: Mizutani
authors.forename: Y
authors.initials: Y
authors.lastname: Tazuke
authors.forename: S
authors.initials: S
authors.lastname: Okuda
authors.forename: T
authors.initials: T
authors.lastname: Dezawa
mesh_terms: D002051:Burkitt Lymphoma / Q000000981:diagnostic imaging*; D002648:Child; D017809:Fatal Outcome; D006801:Humans; D007414:Intestinal Neoplasms / Q000000981:diagnostic imaging*; D008297:Male; D014463:Ultrasonography