Histologic Diagnosis of Inflammatory Skin Diseases

Erythema figuratum

…s, which is as much a marker of malignancy, especially of the breast, as are acanthosis nigricans and dermatomyositis acquired in adulthood, and a slew of conditions without any relationship to erythema annulare centrifugum, erythema figuratum, or er…

Differential Diagnosis in Dermatopathology

Discussions

…y an adenocarcinoma of the gastrointestinal or genital tract, breast, or lung (“malignant” acanthosis nigricans). Each of these forms of acanthosis nigricans, irrespective of the underlying cause, has the same fundamental clinical and his…

Differential Diagnosis in Dermatopathology

Images

Metastatic carcinoma from a breast Morpheiform basal-cell carcinoma…

Differential Diagnosis in Dermatopathology

Differential Diagnosis

Metastatic carcinoma from a breast Morpheiform basal-cell carcinoma 1. Strands, cords, and columns of neoplastic epithelial cells in the dermis 1. Cords and columns of neoplastic epithelial cells in the dermis; no strands as a rule 2. Differen…

Dermatology Practical & Conceptual

Reticular telangiectatic erythema: case report and literature review

…iectatic erythema one month after undergoing a lumpectomy for breast cancer. The lesion persisted for three months, until a long non-absorbable intradermal suture was detected and removed. Two weeks later, the reticular telangiectatic erythema had di…

Differential Diagnosis in Dermatopathology

Discussions

…ient nevi; and melanocytic nevi on special sites, such as the breast (especially nipple and areola), genitalia, perianal region, umbilicus, and intertriginous regions, and of sarcomas (e.g., nodular fasciitis and dermatofibromas with “monster&#…

Histologic Diagnosis of Inflammatory Skin Diseases

Keloid

…ith metastases of carcinomas to skin, especially those from a breast. That “keloidal collagen” is indistinguishable histopathologically from that of a true keloid. Keloids may develop at sites of suppurative infundibulitis (“follicu…

Differential Diagnosis in Dermatopathology

Discussions

…ent to the effects of radical mastectomy for carcinoma of the breast. The attributes histopathologic described here for angiosarcomas in general apply equally to lymphangiosarcomas as described by Stewart and Treves. Synonyms for angiosarcoma are mal…

Differential Diagnosis in Dermatopathology

Study By Disease

…rcinoma from the lung (Quiz #634) Metastatic carcinoma of the breast (Quiz #23) Metastatic melanoma (Quiz #112) Metastatic melanoma (Quiz #599) Metastatic neuroendocrine carcinoma (Quiz #129) Miescher’s nevus (Quiz #526) Miescher’s nevus…