Hartmann’s procedure is a surgical resection of the rectosigmoid colon with closure of the rectal stump and formation of an end colostomy. It was used to treat colon cancer or diverticulitis. Currently its use is limited to emergency surgery when immediate anastomosis is not possible, or more rarely it is used palliative in patients with colorectal tumors.

Henoch–Schonlein purpura is the most common systemic acute small vessel vasculitis in children and young adults consisting in deposition of IgA-dominant immune complex in venules, capillaries, and arterioles. Most common clinical manifestations are purpuric skin rash, colicky abdominal pain and GI bleeding (gastrointestinal manifestation may anticipate cutaneous rash), microscopic hematuria and proteinuria, and arthralgia of large joints.

At imaging gastrointestinal manifestation consists in multifocal bowel wall thickening (due to intramural hemorrhage and edema).

Hernia represents a common cause of small bowel obstruction. A main categorization divides hernia in two groups: internal and external hernia.

External hernia consists in the bowel extending outside of the abdominal cavity and it is the most common hernia. Considering the site of herniation, we distinguish different types of external hernia: