Retrograde jejunogastric intussusception.

Jejunogastric intussusception is an infrequently reported complication of gastroenterostomy. Prognosis and treatment are functions of the anatomic type (Shackman's classification). Gastroscopy and sometimes roentgenograms are the major diagnostic tools. Surgical treatment is required in the acute types where incarceration or strangulation occurs, and in the chronic types when function or quality of life is impaired.