GASTROINTESTINAL MANIFESTATIONS OF SCLERODERMA

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Scleroderma or progressive systemic sclerosis is a multisystem, multistage disorder of small arteries, microvessels, and connective tissue. The disease occurs in all races but affects women three to four times more than men. Initial symptoms typically occur in the 20s to 40s. There are approximately 10 new cases per 1 million adults per year. Systemic manifestations may include skin involvement; Raynaud's disease; polyarthritis; and lung, heart, kidney, and thyroid problems.131 The gastrointestinal tract may be involved, and this disease may affect the esophagus, stomach, or small or large bowel. The gastrointestinal symptoms related to scleroderma may precede the diagnosis of this condition by several years. Up to 90% of patients diagnosed with scleroderma have gastrointestinal manifestations.1, 8, 16, 22, 27, 90, 105 The gastrointestinal symptoms, although rarely life-limiting, can be the source of impaired quality of life for patients with this disease. The most common site of gastrointestinal involvement is the esophagus, which is involved in approximately 90% of patients.4, 59, 123 Other sites of involvement are not uncommon. Anorectal problems may be found in more than half of patients with scleroderma.44 Intestinal involvement may be either small bowel (40% of patients) or large bowel (10% to 50% of patients).65

This article explores the pathophysiology of the gastrointestinal manifestations of scleroderma and reviews the clinical presentation and complications. Treatment options and optimizing management of the patient with gastrointestinal symptoms secondary to scleroderma are also examined. Table 1 summarizes the gastrointestinal manifestations seen in patients with scleroderma.

Section snippets

PATHOPHYSIOLOGY

Overproduction of collagen, increased humoral immune activity, and abnormal cellular immune function all contribute to the development of scleroderma in all of the organ systems. The pathologic changes seen in scleroderma are similar throughout the gastrointestinal tract. The integrity of epithelial cell morphology and villus structures, where present, is maintained except in circumstances in which they are affected by secondary processes, such as gastroesophageal reflux or bacterial overgrowth.

SYMPTOMS AND MANIFESTATIONS BY ORGAN SYSTEM

Table 2 summarizes the gastrointestinal symptoms found in patients with scleroderma. Table 3 lists the diagnostic procedures and indications for these procedures for patients with gastrointestinal symptoms associated with scleroderma. The following is a detailed analysis of symptoms, with diagnostic and treatment strategies by organ system.

SUMMARY

Gastrointestinal involvement is commonly found in scleroderma. Gastrointestinal symptoms may be the presenting symptoms for the diagnosis and may precede the actual diagnosis by months to years. The esophagus is the most frequently affected, but functional problems of the anorectum, small bowel, colon, and stomach may occur. The pathophysiologic mechanism appears to be one of smooth muscle atrophy and, to a lesser degree, fibrosis. These changes result in gastrointestinal motility disturbances

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