Search Results for: neoplasms

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Differential Diagnosis in Dermatopathology

Apocrine (clear-cell) hidradenoma vs. Eccrine (poroid) hidradenoma

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…

Differential Diagnosis in Dermatopathology

Discussions

…ogically as squamous-cell carcinoma. Granular-cell tumors are neoplasms, whereas xanthomas are not, sometimes being a manifestation of a metabolic disorder. Involvement of nerve fascicles by neoplastic cells may be observed in granular-cell tumors, t…

Differential Diagnosis in Dermatopathology

Granular-cell tumor vs. Xanthoma

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…

Differential Diagnosis in Dermatopathology

Discussions

In general, neoplasms metastatic to the skin present little difficulty in differential diagnosis from neoplasms primary in the skin. Carcinoma of the breast is an exception. If there are but a few neoplastic cells and numerous inflammatory cells sca…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Dysplasia?

…allace H. Clark Jr.), and dysplastic nevus.” Rhodes AR. Neoplasms benign neoplasias, hyperplasias, and dysplasias of melanocytes. In: Fitzpatrick TB, Eisen AZ, Wolff K, et Al., eds. Dermatology in General Medicine, 4th ed. New York, NY McGraw-H…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

See Classification of Pigmented Lesions

…illary dermal type Nevoid hyperkeratosis of the nipple Benign neoplasms Solar lentigo, including lichen planus-like keratosis Seborrheic keratosis Malignant neoplasms Basal cell carcinoma, pigmented Solar keratosis, pigmented Melanocytic lesions Beni…

Differential Diagnosis in Dermatopathology

Lymphocytoma cutis with lymphoid follicles vs. Follicular-cell lymphoma

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

Cutaneous T-cell Lymphoma?

…aneous T-cell lymphoma (CTCL).” Santa Cruz DJ, Hurt MA. Neoplasms of the skin. In: Sternberg SS, ed. Diagnostic Surgical Pathology. 2nd ed. New York, NY: Raven Press, 1994:94. Cutaneous T-cell lymphoma (CTCL), also known as mycosis fungoides, c…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Pigmented Lesions

…in the nail plate and in the dermis beneath it.   Benign Neoplasms Solar lentigo, including lichen planus-like keratosis (466, 467, 468, 469, 470, 647, 648, 771) Nubbins of pigmented keratocytes, some of them typified at times by a small protrus…

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