Merck Manual

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Caseous lymphadenitis lesions, external form, submandibular lymph node
Caseous lymphadenitis lesions, external form, submandibular lymph node

Caseous lymphadenitis lesion of the submandibular lymph node in a goat. Hair is missing from the lesion, but it is not yet draining. If draining, the examiner would be wearing gloves. The ruler is to provide a scale for the size of the lesion.

Courtesy of Dr. Kevin Washburn.