Henoch-Schönlein purpura: what does the "rash" look like in the gastrointestinal mucosa?

Henoch-Schönlein disease localized in the appendix

A 16-y-old boy presented with complaints of acute abdomen. Ultrasonography showed an enlarged and tender appendix suggestive of acute appendicitis. The patient underwent surgery and during surgery the appendix was found with a red vasculitis-like distal end, not typical for acute appendicitis. Further per operative examination of the intestines revealed a circular, vasculitis-like red band in terminal ileum. Four days after surgery, the patient developed skin purpura and complained of joint pain classical of Henoch-Schönlein disease. Pathological evaluation of the appendix and a skin biopsy confirmed the diagnosis and the patient was managed accordingly.

Henoch-Schönlein purpura: a long-term prospective study in Greek children

OBJECTIVE

Henoch-Schönlein purpura is a common vasculitis of childhood. The present study, comprising 74 children enrolled during a 9-year period, aimed to delineate the clinical spectrum and the long term follow-up of the disease.

METHODS

Patients were diagnosed strictly on the criteria established by the American College of Rheumatology. The diagnosis was further strengthened by a skin biopsy performed in more than half of cases (42/74), which revealed leukocytoclastic vasculitis in all patients, whereas IgA deposits were found in 37/42 children.

RESULTS

There was a predominance of boys (41 males), and the mean age of study population was 5.2 +/- 2.54 years. Palpable purpura was identified in 73/74 children, whereas transient arthritis manifested in 68/74 children. Gastrointestinal blood loss was elicited in 30 children, 11 of whom had also renal involvement. The latter was seen in 19/74 (25.7%) children, and in the long term follow-up (extended to 2004, from 4-12 years, mean duration 7.3 years), 2 children remained with persistent occult hematuria. Relapses occurred in 49 children (66%), and half of them experienced more than 1 recurrence. Arthritis was less common in the relapsed episodes, and this difference was statistically significant (P < 0.001). Relapses tended to be more common in children with renal involvement and colicky abdominal pain without however reaching statistical significance.

CONCLUSION

Despite common relapses, this disease is benign in the long term even if severe renal involvement can occur during its active period. Recurrences often differ to some extent from the initial episode with arthritis being less common with relapses.

Gangrenous appendicitis in a child with Henoch-Schonlein purpura

Abdominal pain is common feature of Henoch-Schonlein purpura, which may mimic appendicitis, leading to unnecessary laparotomy. Accordingly, the diagnosis must be confirmed by ultrasonography or computed tomography scan before laparotomy is performed. The authors report a case of simultaneous occurrence of Henoch-Schonlein Purpura and gangrenous appendicitis in an 18 year-old boy. The patient was admitted with abdominal pain, cramps, and mild dehydration. He also complained of small reddish purple on his lower limbs, bilateral knee pain, low-grade fever, as well as bloody stools. The symptoms subsided completely. Eight days later, he returned with nonbloody, nonbilious emesis, abdominal cramps, and right lower quadrant abdominal tenderness. Abdominal ultrasound evaluation was performed to rule out an intussusception but demonstrated appendiceal dilatation with a possible appendicolith without any evidence of intussusception. A laparotomy was undertaken, and appendectomy was performed for gangrenous appendicitis. Simultaneous occurrence of Henoch-Schonlein purpura and acute appendicitis is rarely observed. Clinical features of the patients may mislead the clinicians, resulting in delayed diagnosis or misdiagnosis. The use of ultrasonography and computed tomography scan would confirm the diagnosis before surgery.

Use of wireless capsule endoscopy in the management of severe Henoch-Schonlein purpura

Henoch-Schonlein purpura is a multisystem vasculitis that primarily affects children. Characteristic symptoms include purpura of the lower extremities and buttocks, abdominal pain, arthralgias, and hematuria. Gastrointestinal bleeding occurs in approximately 50% of children and, although often self-limiting, can be significant. Wireless capsule endoscopy has been found to be safe and effective for children over 10 years of age. It is now the preferred imaging modality for evaluating gastrointestinal bleeding from the small intestine. Here we report an unusual case of chronic Henoch-Schonlein purpura vasculitis, primarily affecting the gastrointestinal tract, in which wireless capsule endoscopy was helpful in evaluating and directing treatment options.

Perforated appendicitis in a child with Henoch-Schönlein purpura

Henoch-Schönlein purpura (HSP) is a common childhood vasculitis. Abdominal pain is a common feature of HSP, often leading to surgical consultation for evaluation of possible intussusception. Appendicitis is a rare complication of HSP, and in each of the 3 reported cases, appendectomy preceded the appearance of the purpuric rash. More often, unnecessary laparotomies are performed on patients in whom appendicitis is suspected, but who subsequently develop the characteristic purpura. This is the first reported case of appendicitis developing in a patient with the established HSP rash. This case is also the first report of perforated appendicitis in HSP. Clinical vigilance and serial physical and ultrasonographic examinations are needed to detect conditions necessitating surgery in patients with HSP.

What is the difference between IgA nephropathy and Henoch-Schönlein purpura nephritis?

Henoch-Schönlein purpura nephritis (HSPN) and IgA nephropathy (IgAN) are considered to be related diseases since both can be encountered consecutively in the same patient, they have been described in twins, and bear identical pathological and biological abnormalities. Apart from the presence of extrarenal clinical signs found only in HSPN, other differences are noticed between the two diseases. The peak age ranges between 15 and 30 years for a diagnosis of IgAN, whereas HSPN is mainly seen in childhood. Nephritic and/or nephrotic syndromes are more often seen at presentation in HSPN. In contrast to IgAN, HSPN has been described in association with hypersensitivity. Endocapillary and extracapillary inflammations as well as fibrin deposits in the glomerulus are more frequent in HSPN. No major biological differences have been found between the two illnesses, except for a larger size of circulating IgA-containing complexes (IgA-CC) and a greater incidence of increased plasma IgE levels in HSPN. As tissue infiltration by leukocytes is a major feature of HSPN vasculitis, a possible role of a more potent activation of the latter cells by IgA-CC and/or circulating chemokines in HSPN should be considered. Further studies are required to elucidate this possible mechanism as well as the role of hypersensitivity in HSPN.

Recurrent gastrointestinal Henoch-Schönlein purpura

A 7-year-old boy was seen for severe abdominal pain, vomiting, and a 2.0-kg weight loss of 2 weeks duration. Stools were Hemoccult positive. Upper gastrointestinal (UGI) endoscopy showed multiple, raised red lesions in the duodenal bulb and descending duodenum. Although the patient did not have the typical cutaneous eruption, other findings such as acute onset of abdominal pain in a previously healthy boy, absence of infectious or surgical lesions, and more importantly endoscopic changes seen typically in the descending duodenum, led to the likely diagnosis of Henoch-Schönlein purpura (HSP). The patient was treated with prednisone and the duodenal lesions resolved. The diagnosis of HSP was confirmed 24 weeks after the initial symptom when he developed a palpable purpuric rash over both legs. Thirteen months following the initial symptoms and 6 months after the onset of rash, severe abdominal pain with epigastric tenderness recurred and stools were Hemoccult positive. UGI endoscopy showed multiple, raised red lesions in the descending duodenum as seen earlier. The patient was diagnosed with recurrent HSP. This presentation is atypical because of the abnormally long interval between the onset of abdominal pain and the appearance of the skin rash, and unique because of the endoscopically demonstrated recurrent gastrointestinal lesions.