%0 Journal Article
%T Solid Aneurysmal Bone Cyst of the Distal Metatarsus in a Horse
%A Nadja Herbach
%A Christina Terboven
%A Peter Lambrecht
%J Open Journal of Pathology
%P 88-92
%@ 2164-6783
%D 2016
%I Scientific Research Publishing
%R 10.4236/ojpathology.2016.62011
%X A horse was presented with a slowly growing
mass of the distal metatarsal region of the right hind leg. Radiographic
examination revealed an eccentric cyst-like lesion with distortion of the
lateral margin of the distal metatarsus. The lesion involved approximately half
of the metatarsal width, exhibited fine septa, a sclerosed margin towards
unaffected bone and a smooth rim of thin compact bone at the periphery.
Longitudinal sectioning of the distal metatarsus revealed a solid pale yellow
mass with reddish foci and margin. Histologically, the mass consisted of a cell-rich,
well vascularized fibrous stroma, containing numerous irregularly shaped
trabeculae of woven bone with regular osteocytes. Osteoblasts were observed
around the osteoid, and there were foci of numerous osteoclast-like giant
cells. The lesion was diagnosed solid variant of an aneurismal bone cyst.
%K Bone Tumor
%K Aneurysmal Bone Cyst
%K Horse
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=65577