Histologic Diagnosis of Inflammatory Skin Diseases

Images

…┬áThe 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 picker’s nodule as observed on an ear, the diagnosis becomes chondrode…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Radial Growth Phase versus Vertical Growth Phase of Melanoma?

…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 phase,” or where a solar keratosis ends and a squamous-cell carcino…

Dermatology Practical & Conceptual

Melanoma arising in a giant nevus spilus maculosus

…port A 78-year-old Caucasian woman presented with an ulcerated nodule in the right pretibial region (Figure 1). The nodule measured 1 cm in diameter and was surrounded by an erythema. It had grown in a large pre-existing, congenital pigmented lesion…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Verruciform Xanthoma?

…2-year-old man presented to our department with a scrotal skin nodule, first noted as a papule two to three years previously. The nodule was red and pedunculated with a granular surface and a diameter of 10 mm. Three red papules were scattered around…

Dermatology Practical & Conceptual

Pseudofolliculitis barbae: a dermatoscopic correlate

…l, pruritic erythematous papules and, less commonly, pustules, nodules, or abscesses hyperpigmentation, hypertrophic scars and keloids can also occur [2]. Our patient presented with a solitary inflammatory nodule with no previous history of pseudofol…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Atopic Dermatitis?

…and for an extended period of time, the result is a papule or nodule referred to as “prurigo nodularis.” If that papule or nodule then is scratched fiercely, it becomes eroded or ulcerated, and a “picker’s nodule” is br…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Sclerotic Fibroma?

…ribed a solitary, marblelike or pearly, asymptomatic papule or nodule in four patients, three of the lesions being on a forearm and one on a forehead. The lesions were “round, sharply demarcated nodules situated in the reticular dermis, with th…