Imaging diagnosis--enostosis-like lesion in the femur of a horse.
An enostosis-like lesion was diagnosed in the left femur of a Swedish Warmblood horse that had a left hindlimb lameness of 3 weeks duration. With scintigraphy using technetium 99m-hydroxymethylene diphosphonate (99mTc-HDP) a marked regional focal increase in radioactivity was identified in the medullary cavity of the left femur. Radiographically there was a corresponding focal increase in bone opacity in the middiaphysis of the left femur. Histopathologically, a 5cm area of bone matrix was present in the diaphysis of the left femur and confirmed as an enostosis-like lesion. Enostosis-like lesions should be considered as a source of pain in horses with difficult to localize, moderate to severe chronic lameness.
Picker International SX 300, Picker International Inc, Cleveland, OH, USA. smstieger@gmail.com
Susanne M
SM
Stieger-Vanegas
Hege
H
Kippenes-Skogmo
Ebba
E
Nilsson
D000818:Animals; D001847:Bone Diseases / Q000000981:diagnostic imaging / Q000473:pathology / Q000662:veterinary*; D005269:Femur / Q000000981:diagnostic imaging* / Q000473:pathology; D006734:Horse Diseases / Q000000981:diagnostic imaging* / Q000473:pathology; D006736:Horses; D007794:Lameness, Animal / Q000209:etiology; D011877:Radionuclide Imaging; D019275:Radiopharmaceuticals; D013669:Technetium Tc 99m Medronate / Q000031:analogs & derivatives
D019275:Radiopharmaceuticals; C024226:technetium Tc 99m hydroxymethylene diphosphonate; D013669:Technetium Tc 99m Medronate