Radiologic findings of gastrointestinal complications in an adult patient with Henoch-Schönlein purpura

Autoimmune disorders of the gastrointestinal tract: Review of radiological appearances

Autoimmune gastrointestinal (GI) disorders comprise a heterogeneous group of diseases with non-specific clinical manifestations. These are divided into primary and secondary. A high index of clinical suspicion complemented with endoscopic and radiological imaging may allow early diagnosis. Due to the relatively low incidence of autoimmune disorder, the imaging literature is sparse. In this review, we outline the pathogenesis, classification, and imaging appearances of autoimmune GI disorders.

Pathogenesis and gastrointestinal manifestations of IgA vasculitis

Immunoglobulin A (IgA) vasculitis is a form of leukocytoclastic vasculitis of small vessels, clinically characterized by purpuric skin lesions unrelated to any underlying coagulopathy, gastrointestinal manifestations, arthritis and/or arthralgia and renal involvement. The etiology remains unknown, but various triggers including infections, vaccination, drugs and malignancy have been hypothesized to be associated with the development of IgA vasculitis. Although the pathogenesis has not been completely figured out, genetic predisposition, aberrant glycosylation of the hinge region of IgA1, activated complements, cytokines and chemokines were put out to play important roles in the immunopathogenesis of IgA vasculitis. Histologically, the infiltration of small blood vessels with polymorphonuclear leukocytes and the presence of leukocytoclasia are typical pathologic findings in IgA vasculitis. The treatment is usually supportive, and advanced treatments include immunosuppressive drugs (glucocorticoids and immunosuppressive agents), hemopurification and surgery. The prognosis depends on the age at the disease onset and the renal involvement or not.

Henoch-Schonlein purpura with intestinal perforation and cerebral hemorrhage: A case report

Henoch-Schonlein purpura (HSP) with intestinal perforation and cerebral hemorrhage is a very rare clinical condition. There has been no report of HSP complicated with both intestinal perforation and cerebral hemorrhage until October 2012. Here we describe a case of HSP with intestinal perforation and cerebral hemorrhage in a 5-year-old girl. Plain abdominal radiograph in the erect position showed heavy gas in the right subphrenic space with an elevated diaphragm. Partial resection of the small intestine was performed, and pathological analysis suggested chronic suppurative inflammation in all layers of the ileal wall and mesentery. Seventeen days after surgery, cerebral hemorrhage developed and the patient died.

[Abdominal manifestations of Henoch-Schönlein purpura in adults. A retrospective study of 23 cases]

INTRODUCTION

Gastrointestinal manifestations of Henoch-Schönlein purpura (HSP) in adults may be severe. Data about treatment are controversial and the outcome is seldom described.

METHODS

Twenty-three patients with gastrointestinal manifestations of HSP (ACR criteria) were retrospectively studied. We proposed to use clinical and radiological (CT scan) severity scores to assess the usefulness and the efficacy of corticosteroid therapy.

RESULTS

Age at onset ranged from 16 to 80 years (median 39). Gastrointestinal manifestations included abdominal pain (96%), vomiting (52%), gastrointestinal bleeding (39%), diarrhoea (13%) and intestinal obstruction (9%). Scores of disease clinical severity were calculated in 21 patients. Fourteen, three and four had severe, intermediate and mild disease, respectively. Ten patients in the group with severe clinical involvement underwent CT scan that showed severe radiological involvement (parietal thickening of several bowel loops of the same segment or several segments with ileal involvement). Eleven patients out of 14 with clinically severe disease were given corticosteroids. Two patients out of three with intermediate and three patients out of four with mild scores also received corticosteroids. The others received supportive care. In-patients with severe clinical scores, gastrointestinal symptoms improved within 2 days when they were given corticosteroids and within 12.3 days without corticosteroids (p<0.0002). No side effect was observed with steroid therapy.

CONCLUSION

These results suggest that corticosteroids may reduce abdominal symptoms of HSP in adults with clinically severe disease. They are safe when CT scan is performed.

Gastrointestinal involvement in Henoch-Schönlein purpura

OBJECTIVE

To analyse the gastrointestinal manifestation of Henoch-Schonlein purpura (HSP) in adult patients, including clinical and endoscopic features.

MATERIAL AND METHODS

Patients with a final diagnosis of HSP admitted from January 1995 to January 2006 were included. Their medical records, including clinical presentation, laboratory data, endoscopy and pathology reports, were reviewed retrospectively.

RESULTS

One-hundred-and-fifteen patients were included. Gastrointestinal symptoms occurred in 90 patients (78.2%), with abdominal pain the most common symptom. Fifty-four patients underwent gastroscopy, while 24 underwent colonoscopy. The endoscopic lesions included mucosal erythema, oedema, multiple irregular ulcers and nodular changes. In the upper GI tract, the second portion of the duodenum was the most frequently involved area and is where the most severe lesions occur. In the lower GI tract, the rectum was the most frequently involved area, but the most severe lesions were found in the terminal ileum.

CONCLUSIONS

HSP may present with acute abdomen without typical skin manifestations, and gastroscopy and colonoscopy can be helpful in the early diagnosis of HSP in these patients. Typical endoscopic findings include diffuse mucosal oedema, erythema, petechia or multiple irregular ulcers, especially in the second portion of the duodenum or in the terminal ileum.

Gastrointestinal manifestations of Henoch-Schonlein Purpura

Henoch-Schonlein Purpura (HSP) is the most common systemic vasculitis in childhood. The diagnostic criteria include palpable purpura with at least one other manifestation -- abdominal pain, IgA deposition, arthritis or arthralgia, or renal involvement. Immune complex deposits result in necrosis of the wall of small- and medium-sized arteries with infiltration of tissue by neutrophils and deposition of nuclear fragments, a process called leukocytoclastic vasculitis (LCV). It is often associated with infections, medications, or tumors. It may coexist with or mimic Crohn's disease. Periumbilical and epigastric pain worsens with meals, from bowel angina. Bleeding is usually occult or, less commonly, associated with melena. Intussusception, the most common surgical complication, is usually ileo-ileo or ileo-colic. Perforations, usually ileal, may occur spontaneously or be associated with intussusception. Ultrasound, recommended as the first diagnostic test, and CT scans may show intussusception and asymmetric bowel wall thickening mainly involving the jejunum and ileum. There are a range of endoscopic findings including gastritis, duodenitis, ulceration, and purpura, with the second portion of the duodenum characteristically being involved more than the bulb. Intestinal biopsies show IgA deposition and LCV in the submucosal vessels. Superficial biopsies may show inflammation, ulceration, edema, hemorrhage, and vascular congestion, presumably due to vasculitis-induced mucosal ischemia. The efficacy of corticosteroids in preventing severe complications or relapses is controversial. The majority of patients, however, improve spontaneously.