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?

…athologically 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 maligna…

Differential Diagnosis in Dermatopathology

Discussions

…ion that most dramatically distinguishes these two variants of trichoblastoma from one another, the findings contrasting listed at the outset of this chapter indicate that they also are different from one another in several other respects. Trichoblas…

Differential Diagnosis in Dermatopathology

Discussions

…ologic of it. The least denominator in common for diagnosis of trichoblastomas is the silhouette of a benign neoplasm and the predominance of constituent cells like those of a follicular germ. Neoplastic trichoblasts in trichoblastomas tend to be org…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Origin of Adnexal Neoplasms?

“Thus one needs to bear in mind the information required of a pathologist about a particular tumour, which can be summarized as follows: 1. What is the origin of the tumour? 2. What is likely the behavior of the tumour? 3. What is the extent…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Eccrine Neoplasms?

Classification of Skin Appendage Tumors Eccrine Differentiation Eccrine nevus Eccrine duct proliferation Eccrine-centered nevus Eccrine angiomatous hamartoma Syringofibroadenoma or acrosyringeal nevus Comedo nevus of the palm, linear eccrine nevu…