Dermatology Practical & Conceptual

Protecting the patient is our protection

…ss in dermatopathology practice. Although underestimated, the handling of large numbers of small, similar-looking bioptic specimens results very often in unpredictable mistakes. The latter risk is scarcely reported in the literature and has rarely be…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Sebaceous Epithelioma?

…n sebaceous adenoma with its more typical lobules, on the one hand, and cystic basal cell epithelioma in which there is only little differentiation toward sebaceous cells, on the other.” Lever WF. Benign tumors of cutaneous appendages. Arch De…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Tricho-, pilo-, folliculo- ?

…ces be appreciated between the names of those lesions, on one hand, and the actual character of them, on the other. A first step in that understanding is acknowledging that pilo- and tricho- mean hair, and folliculo- means follicle. The so-called hai…

Dermatology Practical & Conceptual

Blue nevus with a starburst pattern on dermoscopy

…e also observed in some cases of blue nevus [4]. On the other hand, Spitz nevi usually present as solitary lesions on the lower extremities or the face. Clinically, a Spitz nevus is a rapidly growing pink-red or reddish-brown dome-shaped papule or no…

Dermatology Practical & Conceptual

Spitz and Reed nevi: acquired or congenital?

…s been reported to grow even at the palate [55]. On the other hand, the possible congenital onset of Reed nevi argues against their UV-dependent acquired histogenesis. Interestingly, largish junctional melanocytic nests are an expected finding not on…

Differential Diagnosis in Dermatopathology

Lichen simplex chronicus vs. Hypertrophic lichen planus

…les may be centered in follicles (Majocchi’s granuloma). Lesions may occur on any anatomic site, but particularly on the scalp (tinea capitis), inguinal region (tinea cruris), hands (tinea manum), feet (tinea pedis), and nails (onychomycosis)….

Differential Diagnosis in Dermatopathology


…al skin markings. It is found always within easy reach of the hands, which are skilled at rubbing and at using an adjunctive object (such as a hairbrush or a towel) to do the job. Prurigo nodularis is merely a papule or nodule produced by the effects…

Histologic Diagnosis of Inflammatory Skin Diseases

Lymphadenosis benigna cutis

…which there often is degeneration of collagen and ulceration. Mouth parts of the tick are apparent sometimes in the upper half of the dermis. Bibliography Bibliography for lymphocytoma cutis Albrecht S, Hofstadter S, Artsob H, Chaban O, From L. Lymp…