Search Results for: cysts

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Histologic Diagnosis of Inflammatory Skin Diseases

Collagen

…red epidermal (infundibular) and follicular (isthmus-catagen) cysts, deep fungal infections and atypical mycobacterial infections, and pyoderma gangrenosum; and those typified by long-standing lichenoid infiltrates of lymphocytes, such as lichen plan…

Histologic Diagnosis of Inflammatory Skin Diseases

Phaeohyphomycosis

…rness, and fever. Abscesses caused by rupture of infundibular cysts are associated with signs of inflammation, but no symptoms systemic. Findings histopathologic Fully developed Subcutaneous abscess Histiocytes, some of them multinucleate, and lympho…

Histologic Diagnosis of Inflammatory Skin Diseases

Parasitic infestations

…nds, e.g., secondary to rupture of infundibular or follicular cysts, do not exhibit parasites in their midst. Clue to specific diagnosis histopathologic “Flame figures” is a clue to a variety of diseases marked by innumerable eosinophils,…

Differential Diagnosis in Dermatopathology

Discussions

…te follicular germs. In early lesions, no infundibular “cysts” are present in the basal-cell carcinoma; fully-developed lesions, however, are marked by numerous tiny infundibular cyst-like structures. That infundibulocystic basal-cell car…

Histologic Diagnosis of Inflammatory Skin Diseases

Porphyria cutanea tarda

…n the upper part of the dermis Milia, i.e., tiny infundibular cysts, in some lesions Re-epithelialization of epidermis beneath a subepidermal blister Correlation clinicopathologic The vesicles are subepidermal. Milia develop consequent to an impedime…

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