Histologic Diagnosis of Inflammatory Skin Diseases

Farmyard pox

…ng men who are herders of sheep (orf) and cows (milker’s nodule), and in veterinarians Distribution of lesions Fingers especially Configuration of lesions Annular sometimes Individual lesions Papules, nodules Course Lesions regress slowly over…

Histologic Diagnosis of Inflammatory Skin Diseases

Applicable Terms

…enigna cutis, and metastases to skin are but three examples of nodules that are visualizable histopathologically. Figure 3.25 Nodule, tumor. ORTHOKERATOSIS [Gk. orthos (straight) + keras (horn) + -osis (condition)]: Hyperkeratosis in which nuclei…

Histologic Diagnosis of Inflammatory Skin Diseases

Errors and Reasons

Error: Abortive is an accurate modifier of particular pathologic processes, e.g., abortive dermatofibroma, abortive morphea, and abortive T-cell lymphoma. Reason: The idea itself is abortive! For example, what is called “abortive T-cell lympho…

Histologic Diagnosis of Inflammatory Skin Diseases

Identification of Basic Patterns: Skin: Perivascular Dermatitis

…” and “neurotic excoriation”: picker’s nodule. What is called “picker’s nodule” combines findings of “prurigo nodularis” and “neurotic excoriation,” to wit, lesions brought into being…

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…

Histologic Diagnosis of Inflammatory Skin Diseases

Dermatofibroma

…al, targetoid Individual lesions A papule usually, a plaque or nodule uncommonly, and a tumor (giant dermatofibroma) rarely; tends to be reddish early, brown late; a papule or nodule early, a macule (sometimes depressed below the surface of the skin)…

Dermatology Practical & Conceptual

Yellow color upon dermatoscopy does not exclude melanoma!

…it because of the presence of a recently developed and growing nodule located on her left cheek. Clinically, the lesion appeared as a dome-shaped yellow to reddish nodule with well-defined borders that was surrounded by a collarette-like scale (Figur…

Dermatology Practical & Conceptual

Study By Disease

…(Quiz #526) Miescher’s nevus (Quiz #570) Milker’s nodule (Quiz #117) Milker’s nodule (Quiz #607) Molluscum contagiosum (Quiz #496) Morphea (Quiz #24) Morphea (Quiz #39) Morphea (Quiz #171) Morphea (Quiz #172) Morphea (Quiz #173) Mo…

Histologic Diagnosis of Inflammatory Skin Diseases

Algorithms Predicated on “Nonspecific” Findings

In this section, algorithms used to reach specific diagnosis are predicated on “nonspecific” findings recognized best at higher magnification. Other changes requisite for specific diagnoses, i.e., denominators that are essential, then ar…