blue naevus. blue-black, coarse, sharply defined, calotte-shaped nodule with a smooth surface. at higher magnification some horn inclusions can be seen on the surface. in addition, hairs run through the nodule. especially the detection of hairs in the nodule area speaks against malignancy (DD: nodular malignant melanoma).
Angiosarcoma of the head and facial skin: the 69-year-old patient noticed this rapidly growing and recurrently bleeding 3x5 cm large, little symptomatic node around the capillitium for 6 months. After incomplete preliminary surgery within a few weeks formation of the present recurrent node. The inconspicuous erythema around the node is noticeable. After the micrographically controlled surgery, the tumor was only free of tumor after an approximately 10 x 10 cm large excision.
sebaceous nevus: Development of different tumor formations in a sebaceous nevus in a 45-year-old patient. In addition to a skin-colored, very rough area with a large basal cell carcinoma, formation of a solid hidradenoma (pigmented tumor on the lower left side). For therapy, the entire hamartoma was excised with a safety margin of 0.5 cm.
Blue nevus: Solitary, blue-black, sharply defined, indolent, coarse knot with a smooth, shiny surface in the area of the capillitium in a 9-year-old boy.
Angiosarcoma of the head and facial skin: the 69-year-old patient noticed this rapidly growing and recurrently bleeding 3x5 cm large, little symptomatic node around the capillitium for 6 months. After incomplete preliminary surgery within a few weeks formation of the present recurrent node. The inconspicuous erythema around the node is noticeable. After the micrographically controlled surgery, the tumor was only free of tumor after an approximately 10 x 10 cm large excision.
blue nevus. blue-black, coarse, sharply defined, calotte-shaped node with a smooth, like polished, shiny surface. in addition, hairs run through the node. follicle ostia funnel-like indented. especially the detection of hairs in the node area speaks against malignancy (DD: nodular malignant melanoma), because the tumor growth does not infiltrate and destroy the hair follicles.
Blue nevus, which has been constant in size for years, measuring approx. 5 x 6 mm, raised, rough papules with blue-black and livid parts, below the left eye of an 83-year-old woman.
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