Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Tricho-, pilo-, folliculo- ?

…folliculoma and trichodiscoma are different names for the same hamartoma at different stages in development of it. At an early stage the hamartoma is named fibrofolliculoma; later the same process is called trichodiscoma. Although an infundibulum of…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Fibromatoses?

“Benign tumors and tumor-like proliferations Fibromatoses Fibroma molle Nonmetastasizing fibrosarcomas Desmoid tumor Keloid Cicatricial fibromatosis Palmar fibromatosis (fibroma or pseudotumor of Dupuytren’s contracture) Plantar fibroma…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Basal-Cell Carcinoma Common in Nevus Sebaceus?

“Nevus sebaceus may be ‘programmed’ for or susceptible to the eventual development of a variety of neoplasms that generally occur in adulthood. The most common of these is basal cell carcinoma, which develops in 5% to 7% of the l…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Inverted Follicular Keratosis, Tricholemmoma, and Desmoplastic Tricholemmoma?

…-151. “Cowden’s disease also is known as multiple hamartoma syndrome or multiple hamartoma and neoplasia syndrome. It has an autosomal dominant pattern of inheritance with high penetrance and is characterized by hamartomas of ectodermal,…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Nevus?

“Strictly speaking, the term nevus denotes any congenital lesion of skin. Nevocellular nevus, however, refers to any congenital or acquired neoplasm of melanocytes.” Murphy GF, Mihm MC. The skin. In: Pathologic Basis of Disease. 6th ed…

Differential Diagnosis in Dermatopathology

Discussions

Trichoadenoma and microcystic adnexal carcinoma at times resemble each other sufficiently to pose a dilemma diagnostic, even though the former is a hamartoma and the latter an adenocarcinoma. Both may have several findings histopathologic in common:…

Differential Diagnosis in Dermatopathology

Discussions

…m of the skin and the commonest neoplasm to develop within the hamartoma named badly nevus sebaceus (it is a hamartoma with abnormalities of many elements of the skin, not simply ones sebaceous). In actuality, squamous-cell carcinoma is a thousand ti…

Differential Diagnosis in Dermatopathology

Sebaceous hyperplasia vs. Nevus sebaceus of Jadassohn

A malignant neoplasm of melanocytes that, in the skin, begins as a macule and may become a patch or a papule. A flat lesion of melanoma tends to be asymmetrical, poorly circumscribed with a scalloped, jagged, or notched border, and variegate, mostly…