Type 3 sclerosing, encapsulating peritonitis coinciding with a foreign body perforating the jejunum of a 10‐month‐old dog

Abstract A young mixed breed dog was presented with abdominal distention, discomfort and intermittent vomiting. The patient was diagnosed with a perforating foreign body in the jejunum with concurrent sclerosing encapsulating peritonitis. This very rare condition has been reported in several species including dogs, cats and people. The syndrome is considered to be a reaction of the body to peritoneal damage, including former coelomic surgery, perforating foreign bodies or abdominal neoplasia. Intra‐abdominal organs become enclosed in a progressively maturing granulation tissue of varying thickness, reducing the mobility and motility of intra‐abdominal organs. Treatment in this case included two surgical interventions as well as postoperative treatment with prednisolone and tamoxifen. Even though previous case reports revealed a poor prognosis, the patient improved under therapy and showed long‐term survival.