The Deceptive Nature of Pneumatosis Intestinalis: From Spontaneous Resolution to Bowel Ischemia

Pneumatosis intestinalis, a rare condition characterized by the presence of gas within the bowel wall, has an estimated incidence of 0.03% in the general population. Although the exact etiology of the condition remains uncertain, pneumatosis intestinalis is broadly classified as primary (idiopathic) or secondary (associated with an underlying condition), and the secondary form accounts for approximately 85% of cases. Secondary pneumatosis intestinalis has been associated with up to 60 potential causes and presents with a wide range of clinical manifestations, making thorough physical examination and imaging essential for appropriate management. Diagnosis is typically based on characteristic computed tomography (CT) findings.

An 89-year-old female presented with shortness of breath, abdominal pain, nausea, vomiting, and diarrhea. CT imaging revealed extensive pneumatosis intestinalis in the small intestine. Despite the patient's stable hemodynamics and a mostly unremarkable physical examination, focal abdominal tenderness raised concern for bowel ischemia. The patient underwent an exploratory laparotomy that revealed patchy areas of pneumatosis intestinalis in an otherwise normal-appearing small bowel, with no evidence of ischemia or necrosis.

Because of the deceptive nature of pneumatosis intestinalis, the mere presence of the condition is not enough to justify surgery. Cases with benign causes can often be managed conservatively and resolve spontaneously, whereas concerning findings that may indicate a surgically treatable cause may require urgent intervention to reduce mortality.