Epithelial and Pancreatic Choristoma in Bovine Lymph Nodes

Detection of Ectopic Intestinal Epithelium in an Ileocaecal Lymph Node from an Adult Crossbred Aberdeen Angus Cow

“…Epithelial choristoma was previously diagnosed in a mesenteric LN from a goat, and in mediastinal LN from cattle [7,9]. In those cases, authors described the presence of the ectopic-non neoplasic epithelium, but the presence of secreted material by cells, as it occurred in the present case, was not referred.…”

“…Even when pathologic changes suggested a clear morphological diagnosis, immunehistochemistry may confirm the nature of the epithelial cells. In a previous report, the origin of ectopic cells was determined based on the morphological features of the epithelium, and on the citokeratin profile [7]. Unfortunately, the affected LN was consumed by the repetitions of the staining procedures performed.…”

“…In cattle, several cases have been described, including the development of stratified squamous epithelium in the jejunum,and the presence of respiratory epithelium and pancreatic tissue in mediastinal lymph nodes [6,7]. The occurrences of choristoma are described as very infrequent, [7]. The aim of this study was to report the presence of an ectopic epithelial tissue in a mesenteric lymph node, from an adult female cow.…”

“…These pathological changes were described in different species such as horses, dogs, goats and guinea pigs [2][3][4][5]. In cattle, several cases have been described, including the development of stratified squamous epithelium in the jejunum,and the presence of respiratory epithelium and pancreatic tissue in mediastinal lymph nodes [6,7]. The occurrences of choristoma are described as very infrequent, [7].…”

A cartilaginous choristoma in a pig liver: a case report

“…There have been cases of pancreatic tissue found in the liver of rats (Barron 1970) or in the duodenal submucosa, in the stomach, Meckel's diverticulum in rabbits, horses, pigs and humans (Briziarelli and Tornaben 1972). Epithelial and pancreatic choristomas were found in bovine lymph nodes at various locations (Quesada et al 2010). Spleen tissue was reported in a dog liver (Knostman et al 2003;Pavarini et al 2010) and swine liver (Tanimoto and Ohtsuki 1993).…”