Search Results for: nodule

Differential Diagnosis in Dermatopathology

Discussions

…bcutaneous granuloma annulare, if present at all, is slight, whereas it often is formidable late in the course of rheumatoid nodule. Rheumatoid nodule usually extends deep into the subcutaneous fat, whereas granuloma annulare does not. In…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…ous + 10.93.3B: A large zone of degenerated collagen enveloped by epithelioid histiocytes arrayed in a palisade = Rheumatoid nodule In some instances of rheumatoid nodule, such as the one shown here, degenerated collagen, rather than fibrin, may…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…rophils in a scale-crust = Chondrodermatitis nodularis helicis The changes pictured are analogous to those of picker’s nodule and, were it not for the presence of cartilage, that would be the diagnosis. When changes like those of…

Dermatoscopy of folliculosebaceous cystic hamartoma

Dermatoscopy of folliculosebaceous cystic hamartoma

…hat had increased in size since childhood. Physical examination indicated the presence of an elastic, firm, pedunculated red nodule measuring 15 mm in size. Dermatoscopic examination of the nodule indicated a yellowish-white network,…

Melanoma arising in a giant nevus spilus maculosus

Melanoma arising in a giant nevus spilus maculosus

…hologic findings we made the diagnosis of a melanoma arising in a giant nevus spilus maculosus. Figure 1. Close-up of eroded nodule with surrounding erythema. Figure 2. The nodule on the right leg appeared in association with a speckled lentiginous…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Radial Growth Phase versus Vertical Growth Phase of Melanoma?

…mine where radial growth phase ends and vertical growth phase begins any more than any histopathologist is able to discern a nodule expanding (“expansile nodule”), that being a sign for the fraternity of “vertical growth…

Pseudofolliculitis barbae: a dermatoscopic correlate

Pseudofolliculitis barbae: a dermatoscopic correlate

…iculitis barbae is characterized clinically by multiple painful, pruritic erythematous papules and, less commonly, pustules, nodules, or abscesses hyperpigmentation, hypertrophic scars and keloids can also occur [2]. Our patient presented with a…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Verruciform Xanthoma?

nodule was red and pedunculated with a granular surface and a diameter of 10 mm. Three red papules were scattered around the nodule. Histopathologic examination of the nodule showed epidermal papillary hyperplasia, collections of foam cells in the…