keratoakanthoma, classic type. short term, grown within 4 weeks, approx. 1.5 cm in diameter, hard, reddish, centrally dented, strongly keratinized lump. no symptoms. diagnosed as "pimples".
Basal cell carcinoma pigmented: slowly growing, centrally ulcerated, completely asymptomatic lump on the nostril; the smooth and shiny wall of the nasal margin is characteristic of the carcinoma, where bizarre vascular structures are also visible
Keratoakanthoma, classic type, short term, hard, reddish, hard, reddish, centrally dented, strongly keratinized lump with isolated telangiectasias on the surface, grown within 4 weeks, measuring about 1.5 cm, in a 51-year-old female patient.
Basal cell carcinoma, nodular. solitary, 1.0 x 1.2 cm large, broad-based, firm, painless nodule, with a shiny, smooth parchment-like surface covered by ectatic, bizarre vessels. Note: There is no follicular structure on the surface of the nodule (compare surrounding skin of the bridge of the nose with the protruding follicles).
Basal cell carcinoma, nodular: centrally ulcerated nodular tumor with clear wall at the edge, ulcer not painful, characteristic for the diagnosis "basal cell carcinoma" is the raised, reflecting wall at the edge of the ulcer.
keratoakanthoma classic type: 6-year-old patient. development of this 1.1 cm in diameter large nodule in 6 weeks. somewhat stalked painless solid nodule. the central horn plug has formed only in the last 3 weeks.
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