A Clinical Atlas of 101 Common Skin Diseases

Basal Cell Carcinoma

A malignant neoplasm made up of abnormal germinative cells analogous to those that compose the folliculosebaceous-apocrine germ in an embryo and that usually manifests clinically as a papule or nodule which may become ulcerated. On the basis of clin…

A Clinical Atlas of 101 Common Skin Diseases

Nevus Sebaceus

A hamartoma of epidermis, epithelial structures of adnexa, and presumably dermal elements, typified, when fully formed, by a papillated or verrucous yellowish plaque situated usually on the scalp. The condition may present itself as a solitary lesio…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Basal-Cell Carcinoma Common in Nevus Sebaceus?

…thologically as basal-cell carcinoma in a nevus sebaceus is a trichoblastoma. Trichoblastoma is the benign counterpart of basal-cell carcinoma, both neoplasms being composed mostly of follicular germinative cells. That being so, the analogue malignan…

Differential Diagnosis in Dermatopathology

Discussions

…histopathologic that small nodular and large nodular types of trichoblastoma have in common include aggregations formed mostly of follicular germinative cells, i.e., trichoblasts, nuclei of trichoblasts at the periphery of nodules often are columnar…

Differential Diagnosis in Dermatopathology

Discussions

The small nodular types of trichoblastoma and of basal-cell carcinoma have many attributes histopathologic in common. For example, both are made up of nodules of follicular germinative cells, i.e., neoplastic trichoblasts, nodules are mostly small a…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Origin of Adnexal Neoplasms?

…ngs histopathologic, the origin of adnexal neoplasms, such as trichoblastoma, sebaceoma, hidradenoma clear-cell, leiomyoma, neuroma, or hemangioma, remains recondite. In most instances, those proliferations are not continuous with epidermis (surface…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Eccrine Neoplasms?

…ts origin (whence does a pale-cell hidradenoma, sebaceoma, or trichoblastoma originate?). Only by spotting signs in a neoplasm that resemble components of normal skin can the actual character of a particular neoplasm be told. In that way, pale-cell h…