Pigmented Lesions

Pigmented Lesions

…“horn psuedocysts.” Malignant neoplasms Basal-cell carcinoma, pigmented (574) Aggregations of abnormal trichoblasts, those at the periphery being columnar and aligned in a palisade. Clefts often separate the aggregations from adjacen…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Recurrence of Melanoma?

…foci within 5 cm of the primary excision site. This includes metastatic melanoma involving the primary excision site, satellites, and intransit metastases.” Allen RE, Epstein WL. Melanoma therapy. Clin Dermatol 1992;10:317-325. “Local…

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…

Differential Diagnosis in Dermatopathology

Images

Metastatic carcinoma from a breast Morpheiform basal-cell carcinoma

Histologic Diagnosis of Inflammatory Skin Diseases

Images

…2B: A band of histiocytes, some of them multinucleate, around squamous epithelium that, in turn, surrounds cellulose = Foreign body reaction to a splinter The splinter came to be surrounded by squamous epithelium by virtue of epidermis, either surfac…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Epidermal Cyst and Epidermoid Cyst?

…n is the epidermal cyst which is lined entirely by stratified squamous epithelium usually without skin appendages. . . . These cysts may arise from hair follicles, sebaceous ducts, and from the epidermis, and it is usually impossible to determine the…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

See Classification of Pigmented Lesions

…e keratosis Seborrheic keratosis Malignant neoplasms Basal cell carcinoma, pigmented Solar keratosis, pigmented Melanocytic lesions Benign Melanosis Simple lentigo Nevus of Ota, nevus of Ito Nevi Congenital Classic acral Superficial Superf…

Histologic Diagnosis of Inflammatory Skin Diseases

Identification of Basic Patterns: Skin: Fibrosing Dermatitis

…racterized episodically by extensive desmoplasia, and in some carcinomas metastatic to skin in which desmoplasia may be rife. Granulation tissue (Fig. 5.365 A&B), that quintessential inflammatory process characterized by an exuberant proliferatio…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Dermatofibroma?

…izing fibrous histiocytomas of the skin are presented. …Cellular, aneurysmal, and atypical (pseudosarcomatous) fibrous histiocytomas of the skin can metastasize, yet they often show a protracted clinical course. Risk factors for metastatic diss…

Dermatology Practical & Conceptual

Letter to the Editor

…lack salve to a thin melanoma that subsequently progressed to metastatic melanoma: a case study,” the patient chose to treat her melanoma with black salve. She reluctantly agreed to conventional medical treatment only after the melanoma had clinicall…