Dermatology Practical & Conceptual

Glomangiosarcoma in the shoulder of a 51-year-old man

…er his trunk and neck. A 1 cm pink, firm, rubbery, non-tender nodule was present on the back of left shoulder. There was no lymphadenopathy. A shave biopsy of the left shoulder lesion was performed. Histopathological findings Shave biopsy showed a ce…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Primary and Secondary Lesions?

…e primary lesions include macules, patches, papules, plaques, nodules, tumors, vesicles, pustules, and bullae. Secondary lesions, by contrast, are said to be scales, crusts, erosions, ulcers, excoriations, lichenification, and fissures. Regrettably,…

Dermatology Practical & Conceptual

Nodules on the right ear

…boy with a one-year history of asymptomatic, slowly enlarging nodules affecting his right ear was seen. The patient’s past medical history was unremarkable, he was not immunosuppressed, he was not taking any drugs, and he was employed as a rubb…

Histologic Diagnosis of Inflammatory Skin Diseases

“Kyrle’s disease”

…cratching and rubbing, and that ends as “picker’s nodule” or “prurigo nodularis.” Ours, of course, is speculation. In fact, though, there is no need ever to invoke a diagnosis of Kyrle’s disease; another diagnosis…

Differential Diagnosis in Dermatopathology

Trichoblastoma, small nodular type vs. Trichoblastoma, large nodular type

…n embryo and that usually manifests clinically as a papule or nodule which may become ulcerated. On the basis of clinico-pathologic correlation, five distinctive types of basal cell carcinoma have been identified, namely, nodular, superficial, morphe…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology


…ickly becomes a red papule and sometimes even a red or purple nodule. In time the domed lesion becomes brown, and, in the course of years, it slowly but surely flattens into a macule that is hypopigmented in its center and hyperpigmented at its perip…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Cutaneous Horn?

…c designation for a projectile, conical, dense hyperkeratotic nodule that resembles the horn of an animal.” Schwartz RA, Stoll HL. Epithelial precancerous lesions. In: Fitzpatrick TB, Eisen AZ, Wolff K, et al., eds. Dermatology in General Medic…

Differential Diagnosis in Dermatopathology


Dermatofibroma, hemorrhagic papulo-nodule Kaposi’s sarcoma, hemorrhagic papulo-nodule