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Diaz-Delgado J, Quesada-Canales O, Arbelo M, Sierra E, Edwards JF, Suarez-Bonnet A, Santana-Suarez C, Espinosa de Los Monteros A, Fernandez A. Multicentric Benign Epithelial Inclusions in a Free-ranging Risso's Dolphin (Grampus griseus). J Comp Pathol 2016; 155:267-271. [PMID: 27392421 DOI: 10.1016/j.jcpa.2016.06.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 05/28/2016] [Accepted: 06/02/2016] [Indexed: 11/30/2022]
Abstract
This report describes the histological and immunohistochemical features of multicentric, benign, epithelial inclusions (BEIs) in a free-ranging, adult, female Risso's dolphin (Grampus griseus). The differential diagnoses included ectopic hamartomatous epithelial inclusions, non-Müllerian choristoma, Müllerian choristoma and low-grade metastatic carcinoma/mesothelioma. The most likely diagnosis of such BEIs was multicentric, embolic, reactive mesothelium, as suggested by cytomorphological and immunophenotypical features of the BEIs, the occurrence of focal pleural rupture and the immunophenotype of the pleural mesothelium. The former represents a pathological condition not previously reported in a marine mammal species, rarely described in animals, and relatively infrequently recognized in man.
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Affiliation(s)
- J Diaz-Delgado
- Veterinary Histology and Pathology, Institute for Animal Health, Veterinary College, University of Las Palmas de Gran Canaria, Trasmontaña s/n, Arucas, Gran Canaria, Spain; Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA.
| | - O Quesada-Canales
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - M Arbelo
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - E Sierra
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - J F Edwards
- Veterinary Histology and Pathology, Institute for Animal Health, Veterinary College, University of Las Palmas de Gran Canaria, Trasmontaña s/n, Arucas, Gran Canaria, Spain
| | - A Suarez-Bonnet
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - C Santana-Suarez
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - A Espinosa de Los Monteros
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - A Fernandez
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
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Ahmed MS, Sasaki J, Goryo M. Gastric duplication: proventricular cystic choristoma on the spleen of a broiler chicken. Avian Dis 2014; 58:495-8. [PMID: 25518449 DOI: 10.1637/10835-040114-case.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Gastric duplication (choristoma) is a very rare anomaly in both humans and other animal species. We report herein a case of proventricular cystic choristoma in a 62-day-old broiler chicken. The broiler chicken was brought from the slaughterhouse to our laboratory after a pale-brown cystic structure closely attached to a thin, compressed spleen was identified. On necropsy, the cystic structure showed a clear mucinous fluid. Histopathologically, the cystic structure was lined by proventricular mucosa presenting in folds and sulci. Submucosal proventricular glands, consisting of secretory units and collecting tubules, occupied parts of the choristomal wall. The gastric mucosa lining the choristomal wall stained positive with periodic acid-Schiff stain, stained negative with Alcian blue staining, and showed a thin layer of smooth muscle fibers and a thick connective tissue layer with Masson trichrome. Ectopic pancreas was noticed attached to the wall of the choristoma. To the best of our knowledge, this represents the first report of choristoma in an avian species.
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