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  1. Dermatology: Acral melanoma

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    Description: A malignant neoplasm derived from cells that are capable of forming melanin affecting distal portions of limbs and the head. It occurs mostly in adults and may originate de novo or from a pigmented nevus or malignant lentigo. (Stedman, 25th ed; from Rook et al., Textbook of Dermatology, 4th ed, p2445)
    Keywords: malignant melanoma, finger, acral, melanoma, fingernail, skin, fingertip, nail
    Is part of: Dermatology: Acral melanoma

  2. Dermatology: Acral Melanoma, Dorsal

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    Description: A malignant neoplasm derived from cells that are capable of forming melanin affecting distal portions of limbs and the head. It occurs mostly in adults and may originate de novo or from a pigmented nevus or malignant lentigo. (Stedman, 25th ed; from Rook et al., Textbook of Dermatology, 4th ed, p2445)
    Keywords: melanoma, skin, acral, finger, nail, fingernail, malignant melanoma, fingertip

  3. Dermatology: Acral Melanoma, Palmar

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    Description: A malignant neoplasm derived from cells that are capable of forming melanin affecting distal portions of limbs and the head. It occurs mostly in adults and may originate de novo or from a pigmented nevus or malignant lentigo. (Stedman, 25th ed; from Rook et al., Textbook of Dermatology, 4th ed, p2445)
    Keywords: malignant melanoma, fingertip, melanoma, skin, finger, fingernail, nail, acral

  4. Dermatology: Acral Melanoma, Lateral

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    Description: A malignant neoplasm derived from cells that are capable of forming melanin affecting distal portions of limbs and the head. It occurs mostly in adults and may originate de novo or from a pigmented nevus or malignant lentigo. (Stedman, 25th ed; from Rook et al., Textbook of Dermatology, 4th ed, p2445)
    Keywords: fingertip, melanoma, acral, nail, fingernail, finger, skin, malignant melanoma

  5. Dermatology: Xanthelasma

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    Description: Stomach-xanthelasma A papule, nodule, or plaque in the skin due to lipid deposits; it is usually yellow, but may be brown, reddish, or cream colored. Microscopically, the lesions show light cells with foamy protoplasm (foam cells). Xanthomas range in size from tiny pinheads to large nodules, and the shape may be round, flat, or irregular. They are often found around the eyes, the joints, the neck or the palms, or over tendons. Often these lipid deposits are not limited to the skin but are found throughout the body in bones, the heart, blood vessels, liver, and other organs.
    Keywords: Plaque, lipid deposits, skin, nodule

  6. Dermatology: Warfarin-induced Skin Necrosis, Fatal, Breast

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    Description: Fatal skin necrosis at breast, induced by heparin. Skin necrosis is the pathologic death of one or more cells, or of a portion of tissue or organ, resulting from irreversible damage; earliest irreversible changesare mitochondrial, consisting of swelling and granular calcium deposits seen by electron microscopy; most frequent visible alterationsare nuclear: pyknosis, shrunken and abnormally dark basophilic staining; karyolysis, swollen and abnormally pale basophilic staining;or karyorrhexis, rupture, and fragmentation of the nucleus. After such changes, the outlines of individual cells are indistinct, andaffected cells may merge, sometimes forming a focus of coarsely granular, amorphous, or hyaline material.
    Keywords: skin, Cell death, Pathological Conditions, mitochondrial swelling, cell lysis, Pathologic Processes, Signs and Symptoms

  7. Dermatology: Skin, Warfarin-induced Skin Necrosis, Fatal

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    Description: Fatal skin necrosis, induced by heparin. Skin necrosis is the pathologic death of one or more cells, or of a portion of tissue or organ, resulting from irreversible damage; earliest irreversible changesare mitochondrial, consisting of swelling and granular calcium deposits seen by electron microscopy; most frequent visible alterationsare nuclear: pyknosis, shrunken and abnormally dark basophilic staining; karyolysis, swollen and abnormally pale basophilic staining;or karyorrhexis, rupture, and fragmentation of the nucleus. After such changes, the outlines of individual cells are indistinct, andaffected cells may merge, sometimes forming a focus of coarsely granular, amorphous, or hyaline material
    Keywords: mitochondrial swelling, Signs and Symptoms, Pathological Conditions, skin, Cell death, Pathologic Processes, cell lysis

  8. Dermatology: Xanthoma

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    Description: Xanthoma post-op after excision A papule, nodule, or plaque in the skin due to lipid deposits; it is usually yellow, but may be brown, reddish, or cream colored. Microscopically, the lesions show light cells with foamy protoplasm (foam cells). Xanthomas range in size from tiny pinheads to large nodules, and the shape may be round, flat, or irregular. They are often found around the eyes, the joints, the neck or the palms, or over tendons. Often these lipid deposits are not limited to the skin but are found throughout the body in bones, the heart, blood vessels, liver, and other organs.
    Keywords: Plaque, lipid deposits, skin, nodule

  9. Dermatology: Xanthoma

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    Description: Xanthoma over eyelids A papule, nodule, or plaque in the skin due to lipid deposits; it is usually yellow, but may be brown, reddish, or cream colored. Microscopically, the lesions show light cells with foamy protoplasm (foam cells). Xanthomas range in size from tiny pinheads to large nodules, and the shape may be round, flat, or irregular. They are often found around the eyes, the joints, the neck or the palms, or over tendons. Often these lipid deposits are not limited to the skin but are found throughout the body in bones, the heart, blood vessels, liver, and other organs.
    Keywords: skin, Plaque, lipid deposits, nodule

  10. Dermatology: Purpura

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    Description: Purpura - red patches that cannot be blanched, e.g. vasculitis Purpura is a hemorrhagic disease characterized by extravasation of blood into the tissues, under the skin, and through the mucous membranes, and producing spontaneous bruises, ecchymoses, and petechiae (small hemorrhagic spots) on the skin. (See plate in Dermatology Atlas.) When accompanied by a decrease in the circulating platelets, it is called thrombocytopenic purpura; when there is no decrease in the platelet count, it is called nonthrombocytopenic purpura. adj., adj purpu´ric.
    Keywords: ecchymoses, petechiae, hemmorage, skin