Clostridium difficile colitis (CDC) has been associated with virtually all available antibiotics. It is well known that administration of drugs by the ocular route can result in systemic absorption with the possibility of systemic effect. We report a case of a 74-year-old woman who was treated with 0.5% levofloxacin eyedrops for ten weeks running for the post operative management of two separate bilateral cataract surgeries. Toxin assay for C. difficile was positive and the endoscopic findings were compatible with CDC. The plasma concentrations reached after intraocular administration of levofloxacin seem so trivial, but the administration of topical agents could make accumulated effect and be a potential cause of systemic toxicity.

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• Concurrent Use of Sulfonylureas and Antimicrobials of the Elderly in Korea: A Potential Risk of Hypoglycemia
  Sera Lee, Miyoung Ock, Hyunah Kim
  Korean Journal of Clinical Pharmacy.2018; 28(3): 188.     CrossRef
• Levofloxacin
  
  Reactions Weekly.2014; 1490(1): 25.     CrossRef

Eosinophilic enteritis is an uncommon disease of unknown cause characterized by eosinophilic infiltration in various areas of the gastrointestinal tract with symptoms. It is generally classified according to the layer of the gastrointestinal tract involved. Eosinophilic infiltration of the serosa is the rarest form of presentation and may manifest eosinophilic ascites. We report a case of a 47-year-old man who experienced progressing abdominal pain. A diffuse erythematous change of the gastric mucosa was observed on gastrofibroscopy. An abdominal computed tomography and colonoscopy showed diffuse wall thickening of the small bowel and colon with a small amount of ascites. Eosinophilic infiltration was confirmed by multiple biopsies of the gastrointestinal tract and peritoneal fluid analysis. The patient was treated with corticosteroid and responded dramatically.