Search Results for: hyperplasia

Differential Diagnosis in Dermatopathology

Discussions

…s not known. In rhinophyma, the most dramatic presentation of rosacea, bulbous enlargement of a nose results from tremendous hyperplasia of sebaceous lobules and formation of many infundibular cysts that rupture, thereby sending contents of…

Differential Diagnosis in Dermatopathology

Pyogenic granuloma vs. Bacillary angiomatosis

An enlargement of normal pre-existing sebaceous lobules on the face, the forehead, cheeks, and nose in particular, that results in lesions seen clinically to consist of a rim of yellow papules around a central dell that represents a dilated ostium…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Cutaneous Horn?

…;cutaneous horn” is not satisfactory. The latter description that avoids the crucial issue of whether a condition is a hyperplasia (e.g., verruca vulgaris), a benign neoplasm (e.g., seborrheic keratosis), or a malignant neoplasm (e.g., solar…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Dermatofibroma?

…th lipid or hemosiderin pigment. Touton giant cells may be present.” From L, Assaad D. Neoplasms, pseudoneoplasms, and hyperplasia of supporting tissue origin. In: Fitzpatrick TB, Eisen AZ, Wolff K, et al., eds. Dermatology in General…

Histologic Diagnosis of Inflammatory Skin Diseases

Pattern Analysis in Historical Perspective

…lammatory Skin Diseases: A Method By Pattern Analysis, 1978: superficial perivascular dermatitis + spongiosis + psoriasiform hyperplasia = spongiotic psoriasiform dermatitis (allergic contact or nummular dermatitis, fully developed). Figure 5.4…

Differential Diagnosis in Dermatopathology

Acne vulgaris, erythematous papule vs. Rosacea, erythematous papule

An enlargement of normal pre-existing sebaceous lobules on the face, the forehead, cheeks, and nose in particular, that results in lesions seen clinically to consist of a rim of yellow papules around a central dell that represents a dilated ostium…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Endothelial Swelling?

…duals. AIDS 1997;11(9):1119–22. “Endoarteritis obliterans is manifested by endothelial cell swelling, endothelial hyperplasia and expansion of vessel walls by edema and a lymphohistiocytic infiltrate with luminal attenuation.”…

Non-choroidal yellow melanoma showing positive staining with Sudan Black consistent with the presence of lipofuscin: a case report

Non-choroidal yellow melanoma showing positive staining with Sudan Black consistent with the presence of lipofuscin: a case report

…the case reported here. Another published cause of dermatoscopic yellow is the presence of sebaceous structures in sebaceous hyperplasia [15], nevus sebaceous and sebaceous adenoma [16]. Bryden et al. attributed the yellow color in sebaceous…