Secondary psoas abscess after an open cholecystectomy and a common bile duct exploration.

Background: A psoas abscess presents a diagnostic challenge, due to its rarity, non-specific clinical manifestations and wide range of etiologies.

Case Report: We describe a case of a secondary psoas abscess containing Staphylococus aureus following open cholecystectomy and common bile duct exploration in a woman who had no history or evidence of comorbidity.

Conclusions: Two possible causes of this abscess are performance of the Kocher maneuver during the surgical procedure and external contamination.

Case Report: Hemothorax in Envenomation by the Viperid Snake .

, a highly venomous pit viper distributed from Colombia and northwestern Peru in South America to southern Mexico, is responsible for most snake bites in Central America, affecting especially young agricultural workers. A 17-year-old male from a rural area in northern Honduras was admitted at San Francisco Hospital after a bite that had occurred 3 days earlier. The puncture wounds were located on the first toe of the right foot.