Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Eccrine, Apocrine, and Apoeccrine Sweat Glands?

…ed by lactiferous (apocrine) ducts to ostia at the surface of nipples. In short, anatomically, histologically, and biologically, eccrine glands are very different from apocrine glands. The type of secretion associated with them also is very different…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Study By Disease

…z #529) Neurofibroma (Quiz #674) Nevoid hyperkeratosis of the nipple (Quiz #443) Nevus flammeus (Quiz #416) Nevus of Ito (Quiz #522) Nevus of Ota (Quiz #521) Nevus spilus (Quiz #35) Nodular cutaneous amyloidosis (Quiz #837) Nodular vasculitis (Quiz #…

Histologic Diagnosis of Inflammatory Skin Diseases

Lymphadenosis benigna cutis

…tion of lesions Localized usually to an ear lobe, the nose, a nipple or areola, or the scrotum; lesions on the ear are encountered in children especially, and lesions on the breast are met with in adults mostly; any cutaneous site may be affected. Ar…

Differential Diagnosis in Dermatopathology


…neoplasm on a breast designated syringomatous adenoma of the nipple is identical to microcystic adnexal carcinoma. Management of microcystic adnexal carcinoma is total excision. Because that is not always feasible by conventional surgical technique,…

Dermatology Practical & Conceptual

Pigmented Lesions

…e of melanin in the epidermis. Nevoid hyperkeratosis of the nipple¬†(443) Broad mammillations, each formed by a subtly elevated dermal papilla, interrupted by thin epidermal rete ridges pigmented markedly. Hemorrhage Ungual and subungual¬†(668)…

Differential Diagnosis in Dermatopathology

Trichoadenoma vs. Microcystic adnexal carcinoma

…papules, papulovesicles, papulopustules, and vesicles, some arranged in linear or curvilinear tracks (burrows). Sometimes nodules are present, especially in the interdigital webs and on the genitalia, nipple and areola, chest, forearms, and wrists….

Differential Diagnosis in Dermatopathology

See Classification of Pigmented Lesions

…ous nevus, papillary 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…