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Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Chondrodermatitis Nodularis Helicis?

…presumed cause or appearance morphologic, e.g., surfer’s nodule, pressure papule from prostheses, granuloma (acanthoma) fissuratum, prurigo nodularis, and picker’s nodule. Those conditions, like chondrodermatitis nodularis helicis, consis…

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…ured were referred to in times past as “pseudorheumatoid nodule.” In fact, they are those of granuloma annulare as evidenced by the abundant mucin in the center of some palisades of histiocytes. In short, there is rheumatoid nodule, but n…

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…

Histologic Diagnosis of Inflammatory Skin Diseases

Necrobiosis lipoidica

…ranuloma annulare, necrobiotic xanthogranuloma, and rheumatoid nodule. Granuloma annulare usually disappears in time without residua clinical, whereas necrobiosis lipoidica usually resolves as an atrophic scar, and rheumatoid nodule persists as a nod…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Pseudomalignancies?

“The term pseudocancerosis covers a variety of diseases that can be difficult to distinguish from true carcinomas not only clinically but also histologically. However, pseudocanceroses may not only be similar to squamous cell carcinomas but a…

Histologic Diagnosis of Inflammatory Skin Diseases

Chondrodermatitis nodularis helicis

…is the aural analogue of prurigo nodularis and picker’s nodule, just as are lesions of granuloma fissuratum, surfer’s nodules, and pressure papules from prosthesis. It is not truly chondrodermatitis, anymore than hidradenitis suppurativa…

Dermatology Practical & Conceptual

From the Dermatologikum Hamburg: Quiz

The patient A 7-year-old girl was presented by her parents with a nodule on the right leg. The lesion had been present for a few weeks and had slowly increased in size. At the time of presentation the lesion measured 6 mm in diameter and it was neit…

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