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Appendix
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Cutaneous Metastases
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Other Lymphoproliferative and Myeloproliferative Diseases
Benign Lymphocytic Infiltrates Lymphocytic Infiltrate of Jessner A benign skin-limited disorder that overlaps with other entities, including dermal lupus erythematosus, cutaneous lymphoid hyperplasia, and polymorphic light eruption (PMLE). Males = females; onset typically during middle age; very rare in children.…
Cutaneous T-Cell Lymphoma
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B-Cell Lymphomas of the Skin
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Mastocytosis
Spectrum of disorders caused by proliferation and accumulation of mast cells in the skin and/or other tissues ( Table 96.1 ). Table 96.1 WHO classification of mastocytosis. Cutaneous mastocytosis (CM) Maculopapular CM/“urticaria pigmentosa” Diffuse CM Mastocytoma (≤3 lesions) Systemic mastocytosis…
Common Soft Tissue Tumors/Proliferations
Neural/Neuroendocrine Neurofibroma Skin-colored to pink, soft papulonodule, often on the trunk (see Fig. 50.2 ). Compressible (the tumor often herniates inward upon palpation – this is referred to as the “button-hole” sign); it is sometimes pedunculated. Usually solitary in most…
Vascular Neoplasms and Reactive Proliferations
Lesions of vascular origin are broadly, and somewhat imperfectly, classified as neoplasms (tumors), malformations, reactive proliferations, or telangiectasias. The growth of a neoplasm is largely autonomous (i.e. not reactive). Malformations, in general, are not actively proliferating (see Ch. 85 ).…
Cutaneous Melanoma
A malignant tumor of melanocytes, most commonly arising from cutaneous melanocytes; can also develop from melanocytes residing elsewhere – e.g. in the uveal tract, retinal pigment epithelium, gastrointestinal mucosa, or leptomeninges. Some cutaneous melanomas (CMs) arise de novo , whereas…
Benign Melanocytics Neoplasms
Benign Pigmented Cutaneous Lesions Other Than Melanocytic Nevi This group of lesions can further be divided into: (1) predominantly epidermal lesions ( Table 92.1 ; Figs 92.1–92.5 ); and (2) dermal melanocytoses ( Table 92.2 ; Figs 92.6 and 92.7…