Difference between revisions of "Dermal cysts"
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m (→Microscopic) |
m (→Ruptured) |
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=====Ruptured===== | =====Ruptured===== | ||
The sections show hair-bearing skin with a cyst that is lined by squamous epithelium with a granular layer. The cyst contains keratin. A mixed inflammatory infiltrate (predominantly lymphocytes and plasma cells) surround the cyst. Neutrophils infiltrate the cyst lining and are admixed with the keratin within its core. | |||
The lesion appears to be completely excised in the plane of section. Hair follicles are adjacent to the lesion; however, they are not inflamed. The overlying epithelium is unremarkable. | |||
=====Ruptured without epithelium===== | |||
The section shows a dermal collection of neutrophils with acellular keratin-like material surrounded by histiocytes and fibrosis. The lesion is completely excised in the plane of section. Hair follicles are adjacent to the abscess; however, they are not inflamed. | The section shows a dermal collection of neutrophils with acellular keratin-like material surrounded by histiocytes and fibrosis. The lesion is completely excised in the plane of section. Hair follicles are adjacent to the abscess; however, they are not inflamed. | ||