Histologic Diagnosis of Inflammatory Skin Diseases

Silica granuloma

…ue, they causing rents unavoidable, no matter how skilled the hand. Laboratory confirmation Polarized light reveals particles of silica to be brilliant and doubly refractile. Spectrographic analysis demonstrates the presence of silicon dioxide. Cause…

Dermatology Practical & Conceptual

Melanoma arising in a giant nevus spilus maculosus

…error cannot be excluded. Papular nevus spilus, on the other hand, is characterized by dark brown papules or nodules on a light-brown background, although small dark spots may also be present [3]. Histopathologically, this type of nevus spilus shows…

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…

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

Discussions

…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…

Differential Diagnosis in Dermatopathology

Discussions

…icial response to an assault by an arthropod are inflammatory diseases that share many features clinical and findings histopathologic. When viewed through a conventional microscope, both conditions may exhibit superficial or superficial and mid-derma…