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Antibiotic-associated colitis: always pseudomembranous?
Abstract:
Among the 14 cases of antibiotic-induced colitis, endoscopic features were: in 9 cases typical pseudomembranes, in 4 cases petechiae or ecchymosis or suggillation-like redness with near-to-normal surrounding mucosa. In one case induced by Spiramycin, a macrolide that had never been previously indicated as being responsible for the disease, the endoscopic picture was 'atypical' and directed us towards a severe ulcerative colitis. These forms are very rare and usually limited to the right or transverse colon which suggests, if possible, a total colonoscopy. The nosographic picture of these cases is not quite clear, since they could represent both the most severe stages within 'non-pseudomembranous' antibiotic-induced colitis and autonomous forms whose evolution does not contribute in any way to the formation of pseudomembranes.
Insights
Antibiotic-induced colitis can present with typical pseudomembranes or atypical redness. Rare cases, like one from Spiramycin, mimic severe ulcerative colitis, necessitating thorough colonoscopy.
Area of Science:
- Gastroenterology
- Internal Medicine
- Pharmacology
Background:
- Antibiotic-induced colitis is a known complication of antibiotic therapy.
- Endoscopic findings typically include pseudomembranes.
Observation:
- This study reviewed 14 cases of antibiotic-induced colitis.
- Nine cases showed typical pseudomembranes.
- Four cases exhibited petechiae, ecchymosis, or redness with near-normal mucosa.
Findings:
- One case induced by Spiramycin, a macrolide, presented atypically, resembling severe ulcerative colitis.
- These atypical presentations are rare and often limited to the right or transverse colon.
- The exact nosographic classification of these rare forms remains unclear, potentially representing severe non-pseudomembranous colitis or distinct entities.
Implications:
- Atypical antibiotic-induced colitis can mimic other severe colonic diseases, challenging diagnosis.
- Total colonoscopy is recommended for suspected cases to identify the extent of colonic involvement.
- Recognition of rare presentations is crucial for accurate diagnosis and management of antibiotic-induced colitis.