title: Clinical, ultrasonographic, and pathologic findings in 70 camels (Camelus dromedarius) with Johne's disease.
abstract: This study evaluated the use of ultrasonography for the diagnosis of Johne's disease in camels (Camelus dromedarius). Seventy camels with confirmed Johne's disease were examined by ultrasonography and subsequent necropsy; 15 healthy camels were included as controls. The most outstanding findings were visible enlargement of the mesenteric lymph nodes in 52 (74%) camels. Lesions had either echogenic (26%; n = 18) or anechoic (69%; n = 48) capsule and the contents were either anechoic (21%; n = 15), echogenic (27%; n = 19), or heterogeneous (46%; n = 32). Clumps of echogenic tissue interspersed with fluid pockets were imaged between the intestinal loops in 9 (13%) camels. There was mild, moderate, or severe thickening and corrugation of the intestinal wall, excessive anechoic fluid in the abdominal cavity in 18 (26%) camels, increased hepatic brightness in 30 (43%) camels, and pericardial and pleural effusions in 22 (31%) camels. Sensitivity values for detecting intestinal lesions and enlarged mesenteric lymph nodes were 95% and 84%, respectively.
authors.affiliation: Department of Veterinary Medicine, College of Agriculture and Veterinary Medicine, Qassim University, Saudi Arabia.
authors.forename: Mohamed
authors.initials: M
authors.lastname: Tharwat
authors.forename: Fahd
authors.initials: F
authors.lastname: Al-Sobayil
authors.forename: Ahmed
authors.initials: A
authors.lastname: Ali
authors.forename: Mahmoud
authors.initials: M
authors.lastname: Hashad
authors.forename: Sébastien
authors.initials: S
authors.lastname: Buczinski
mesh_terms: D000818:Animals; D002162:Camelus; D004269:DNA, Bacterial / Q000032:analysis; D005260:Female; D008198:Lymph Nodes / Q000473:pathology*; D008297:Male; D016927:Mycobacterium avium subsp. paratuberculosis / Q000302:isolation & purification; D010283:Paratuberculosis / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D014463:Ultrasonography
chemical_list: D004269:DNA, Bacterial