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A Clinical Atlas of 101 Common Skin Diseases

Cysts and Cystic Hamartomas

Papules, nodules, and tumors that, on gross examination, are usually skin colored and, on histopathologic examination, consist of an epithelium-lined sac that contains fluid, cells, or both in the case of true cysts and of cysts that are associated…

Therapeutic Strategies in Dermatology

Appendigeal Tumors: Overview

Adnexal Tumors Both benign and malignant tumors may arise from the cutaneous adnexa (hair follicles, sweat glands, and sebaceous glands). Treatment First Steps A biopsy is usually necessary to establish the diagnosis, except for syringomas. Surgica…

A Clinical Atlas of 101 Common Skin Diseases

Mammary Paget’s

Mammary Paget’s disease is an apocrine carcinoma that begins in mammary glands and extends along lactiferous ducts to the epidermis where it is seen clinically as a scaly, crusted, or eroded plaque on the nipple or areola of women mostly, and…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Eccrine Neoplasms?

…th the possible exceptions of mucinous carcinoma and papillary eccrine adenoma, all of the ‘eccrine’ tumors display ductal differentiation. It is not possible to distinguish between apocrine and eccrine ducts, other than the anatomic rela…

Histologic Diagnosis of Inflammatory Skin Diseases

Eccrine Units

…tive tissue of the periadnexal dermis. Figure 1.57 Although eccrine glands are very different morphologically from apocrine glands, eccrine ducts are identical with apocrine ducts. The secretory portion of an eccrine gland consists of two layers o…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Eccrine, Apocrine, and Apoeccrine Sweat Glands?

…ereas apocrine secretion is manufactured by an apocrine gland. Eccrine sweat is a clear liquid, whereas apocrine secretion is a milky suspension. Apocrine glands are continuous with ducts that lead to infundibular epidermis. In contrast, eccrine glan…

Dermatology Practical & Conceptual

Dermoscopy of non-pigmented eccrine poromas: study of Mexican cases

Abstract Background: Eccrine poroma is a benign neoplasm that can mimick a malignant neoplasm dermoscopically. The characteristic vascular pattern of this tumor has not been established. Objective: To evaluate dermoscopic features of non-pigmented e…

Differential Diagnosis in Dermatopathology

Seborrheic keratosis, acanthotic type vs. Eccrine poroma

Mammary Paget’s disease is an apocrine carcinoma that begins in mammary glands and extends along lactiferous ducts to the epidermis where it is seen clinically as a scaly, crusted, or eroded plaque on the nipple or areola of women mostly, and…

Differential Diagnosis in Dermatopathology

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

Mammary Paget’s disease is an apocrine carcinoma that begins in mammary glands and extends along lactiferous ducts to the epidermis where it is seen clinically as a scaly, crusted, or eroded plaque on the nipple or areola of women mostly, and…

Differential Diagnosis in Dermatopathology

Apocrine mixed tumor vs. Eccrine mixed tumor

Mammary Paget’s disease is an apocrine carcinoma that begins in mammary glands and extends along lactiferous ducts to the epidermis where it is seen clinically as a scaly, crusted, or eroded plaque on the nipple or areola of women mostly, and…

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