Search Results for: patch

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Differential Diagnosis in Dermatopathology

Discussions

…nodular. The entire process, from the outset, is that of melanoma. Melanoma in situ on sun-damaged skin of a face, like the patch stage of Kaposi’s sarcoma and the patch stage of mycosis fungoides (e.g., parapsoriasis en plaques), is not…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Cutaneous T-cell Lymphoma?

…;In general, CTCL is a chronic, slowly progressive disease with a long evolution. Three kinds of lesions are characteristic: patches, plaques, and tumours. A patch is a flat skin lesion recognizable by the fact that its colour is different from that…

Clinical Case Studies

Nevus of Ota

INITIAL PRESENTATION A 32-year-old Asian man presented with a long-standing patch of gray-brown discoloration under his left eye. (Figure 1) He noted an increasing prominence of the pigmentation over the preceding 15 years. The patient had a…

Clinical Case Studies

Study By Disease

…pe (Quiz #110) Mycosis fungoides, altered histopathologically by virtue of treatments various (Quiz #792) Mycosis fungoides, patch stage (Quiz #12) Mycosis fungoides, patch stage (Quiz #124) Mycosis fungoides, patch/plaque (Quiz #556) Mycosis…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Mycosis Fungoides—Increasing in Incidence?

…tients with small-plaque parapsoriasis have only those small, flat lesions for a lifetime. Others have lesions concurrent of patches of large-plaque parapsoriasis. Episodically, the macules and patches may be accompanied by plaques of mycosis…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Primary and Secondary Lesions?

…Wolff HH, et al., eds. Dermatology, 2nd ed. Berlin: Springer-Verlag, 2000:9. “Primary lesions: macule, papule, nodule, patch, plaque, pustule, vesicle, bulla (blister), wheal, telangiectasia. Secondary lesions: crust, excoriation,…

Resolving Quandaries in Dermatology, Pathology & Dermatopathology

Radial Growth Phase versus Vertical Growth Phase of Melanoma?

…in the evolution of a malignant melanoma in which it grows indolently but progressively as a spreading tan, brown, or black patch in the skin. The lesional cells may be confined to the epidermis (in situ), or they may have competence for local…

Histologic Diagnosis of Inflammatory Skin Diseases

Pityriasis rosea

…te and in a “Christmas-tree pattern” on the trunk Individual lesions “Herald patch” or “mother patch” refers to the appearance of the first lesion, i.e., an oval or round plaque with delicate collarettes of scale…

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