Congenital melanocytic nevus. brown, soft, papillomatous plaque sharply demarcated from the surrounding normal skin. no change in colour or shape has been detected so far apart from the "physiological" size growth.
Acroangiodermatitis. detail from the above figure. 0.2-0.4 cm large, initially isolated, then aggregated, deep red to reddish-livid papules develop from the smallest red (haemorrhagic) spots with a smooth surface, which finally confluent to form large plaques.
Pigmented spindle cell tumor, nevus reed: dark brown to black pigmented plaque, preferably located on the lower leg. The lesion is usually excised under the suspected diagnosis of melanoma. Illustration from the collection of Dr. Michael Hambardzumyan.
Vasculitis, leukocytoclastic (non-IgA-associated). multiple, acute, symmetric, since 2 weeks existing, localized on both lower legs, irregularly distributed, 0.1-0.2 cm large, sharply defined, symptomless, hemorrhagic spots and blisters as well as beginning incrustations.
lymphedema secondary: diffuse, uniform swelling of the left lower extremity. if the patient stands for a longer period of time, the swelling increases significantly. condition after pelvic lymphadenectomy.
Larva migrans. linear plaque, subepidermally situated, tortuous, constantly itching gait on the right hollow foot. conspicuously in the area of the gait structures described blister formation.
Sarcoidosis, subcutaneous nodular form:known pulmonary sarcoidosis; skin findings: subcutaneously and cutaneously located nodules and plates which can be easily distinguished from the surrounding area and which slide on the support.
squamous cell carcinoma of the skin: advanced ulcerated carcinoma. previously misinterpreted as a venous ulcer. the carcinoma is palpated as a very firm, little pain-sensitive (!) node, which is hardly movable on its base. a sentinel lymph node biopsy proved negative (no tumor infestation).
Hyperpigmentation, post-inflammatory. Chronic stationary, multiple, disseminated or confluent, brown-red or brownish smooth spots on the lower legs of a 26-year-old patient. The spots have developed over a longer period of time from brown-red, verrucous plaques that had developed as part of a lichen planus verrucosus.
melanoma malignes amelanotic: since early childhood a pigment mark is known at this site. continuous growth for several years. for half a year extensive ulceration of the node. no significant symptoms.
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