Merck Manual

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Eosinophilic granuloma, thigh, kitten
Eosinophilic granuloma, thigh, kitten
Eosinophilic granuloma, thigh, kitten

These bilateral, pencil-like thickenings on the caudal thigh of this kitten were common before the widespread use of flea preventives.

Courtesy of Dr. Karen Moriello.