Hernia formation after single‐stage umbilical vein marsupialization in three Percheron foals diagnosed with septic omphalophlebitis

Septic omphalophlebitis is a common disease process with a variety of morbidities and possible mortality. Affected umbilical remnant resection is highly successful but may not always be possible. Umbilical marsupialization can be implemented when total resection cannot be accomplished with minimally reported complications. Umbilical vein marsupialization was performed on three Percheron foals with extensive septic omphalophlebitis using the one‐stage paramedian translocation technique and prolonged postoperative antimicrobial therapy. Long‐term follow‐up revealed herniation at the marsupialization site in all foals. Two foals were subsequently treated with herniorrhaphy at the prior marsupialization site. One foal died due to septic peritonitis with hernia formation 3 months after marsupialization. This case series highlights hernia formation as a potential complication following one‐stage umbilical vein marsupialization in foals diagnosed with septic omphalophlebitis and should be considered as a possible postoperative complication.