Search Results for: hyperplasia

Differential Diagnosis in Dermatopathology

Keratoacanthomatous verruca vulgaris vs. Verrucous keratoacanthoma

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…

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…

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…

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.”…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Figurate Erythemas?

…e centrifugum produces a specimen whose sections show discrete mounds of parakeratosis, foci of spongiosis, slight epidermal hyperplasia, and a superficial perivascular infiltrate of lymphocytes associated with a few extravasated erythrocytes in an…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

…dermis common 10. No dull pink globules within the epidermis as a rule 11. Hyperkeratosis, hypergranulosis, and spinous-cell hyperplasia usual 11. Hyperkeratosis not prominent; no hypergranulosis usually; little epidermal hyperplasia 12. No evidence…

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…