Dermatology Practical & Conceptual

Dermoscopic findings in a patient with multiple piloleiomyomas

…Bras Dermatol. 1995;70:43-6. 5. Arpaia N, Cassano N, Vena GA. Dermatofibroma: a case report and personal considerations. Dermatol Surg. 2004;30(3):421. 6. Puig S, Romero D, Zaballos P, Malvehy J. Dermoscopy of dermatofibroma. Arch Dermatol. 2005;1…

Differential Diagnosis in Dermatopathology

Discussions

…to distinction histopathologic between the surface changes of dermatofibromas and of superficial basal-cell carcinomas is recognition of unquestionable follicular (and often sebaceous) differentiation of germinative proliferations of cells of dermat…

Histologic Diagnosis of Inflammatory Skin Diseases

Identification of Basic Patterns: Skin: Nodular and Diffuse Dermatitis

…ure 5.217 A&B. Specific diagnosis of a diffuse dermatitis: dermatofibroma. This dense diffuse fibrosing dermatitis (and panniculitis) can be told to be a dermatofibroma because plump oval fibrocytes, arranged haphazardly, are associated with coar…

Differential Diagnosis in Dermatopathology

Discussions

…tz’s nevus, but no nests of any kind ever are spied in a dermatofibroma. The similarities histopathologic between dermatofibroma and desmoplastic Spitz’s nevus are reflected in how these conditions present themselves clinically. In our ex…

Differential Diagnosis in Dermatopathology

Discussions

Dermatofibroma and dermatofibrosarcoma protuberans are lesions made up of dense diffuse infiltrates of mesenchymal cells in company with bundles of collagen, the two together occupying at least much of the thickness of the dermis and sometimes part…

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…

Differential Diagnosis in Dermatopathology

Discussions

…e numbers of them are not extravasated as they are in an early dermatofibroma. Because a dermatofibroma very early in its course displays numerous dilated venules and many extravasated erythrocytes, it presents itself clinically as pink to purple pap…

Histologic Diagnosis of Inflammatory Skin Diseases

Scar

Scar Synonyms Cicatrix Presentation stereotypical Age and sex Any age and both sexes Distribution of lesions Usually localized, but sometimes widespread Configuration of lesions Linear, as in a surgical wound Round, as a consequence of an ulcer ind…