Search Results for: metastatic squamous-cell carcinoma

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Parapsoriasis?

…rmatological types, characterized by nonpruriginous erythmato-squamous spots, extremely persistent and rebellious to all treatment. It is exclusively the objective appearance of these dermatoses which led to their mutual approximation to psoriasis. T…

Histologic Diagnosis of Inflammatory Skin Diseases

Sebaceous Units

…ebaceous gland marks the site where lipid-producing glandular cells of sebaceous lobules meet stratified squamous epithelium of an infundibulum. A sebaceous duct is lined by a thin cornifying squamous epithelium with a barely detectable granular zone…

Dermatology Practical & Conceptual

Pigmented Lesions

…as “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 adjacent…

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 re…

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. Differentiati…

Differential Diagnosis in Dermatopathology

Images

Metastatic carcinoma from a breast Morpheiform basal-cell carcinoma

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…

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…

Histologic Diagnosis of Inflammatory Skin Diseases

See Classification of Pigmented Lesions

…like 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 Superficial an…