Abstract
Epidermal inclusion cysts in rodents are intradermal or subcutaneous nodules, usually less than 0.5 cm in diameter. Grossly, they appear as a raised, smooth, round nodule in the skin. They may be attached to the skin and move with it, or be located under the skin and move independently (Figs.176 and 177). Upon excision, the nodule may consist of single or multiple cysts containing gray to white desiccated material (Weiss and Frese 1974). At necropsy, an epidermal inclusion cyst can be confused with neoplastic lesions of the skin. In the rat, epidermal inclusion cysts have been reported along the dorsal midline of the back (Burek 1978) and have been observed in the tail and hindleg at our laboratory, but most references fail to state where these cysts are located.
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References
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Lake, S.G., Hart-Elcock, L., Mueller, R.E., Stuart, B.P. (1989). Epidermal Inclusion Cyst, Skin, Rat. In: Jones, T.C., Mohr, U., Hunt, R.D. (eds) Integument and Mammary Glands. Monographs on Pathology of Laboratory Animals. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-83749-4_23
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DOI: https://doi.org/10.1007/978-3-642-83749-4_23
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