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.
Insect bite; superficial and deep, spot-like distributed, perivascularly oriented, predominantly lymphocytic infiltrate (mixed with a few eosinophilic granulocytes).
erythema chronicum migrans. shown here is a finding about 3 months old. approx. 10 days after (rememberable) puncture, a painless, non-itching circular erythema developed, only moderately well distinguishable from normal skin. 3 months later the doctor was consulted.
Acrodermatitis chronica atrophicans. Clearly visible, flaccid skin atrophy and edematous redness on the right foot in a serologically proven infection with Borrelia bacteria. The patient spends several months every summer in the Black Forest.
Pemphigoid, bullous. detail enlargement: multiple, originally tight blisters, which have largely emptied and are localized on flat erythema. in some blisters the bladder roof has already completely detached, therefore multiple small erosions and crusts are visible.
Necrobiosis lipoidica: different clinical sections. frontal, large, little indurated, slightly reddened plaque with atrophic surface. lateral a 3.5 cm diameter medal-shaped plaque with a slightly marginalized edge.
Erythema nodosum. red plaques and deep nodular formation, which have been present for several days and are highly painful and have a blurred border; this was preceded by an unclassified, highly febrile viral bronchial infection and the intake of ibuprofen as an analgesic.
Larva migrans, detail: Garland-shaped, tortuous, erythematous, partly scaly plaque on the right foot back of a 35-year-old patient after a bathing holiday in Thailand.
Lichen (ruber) planus ulcerosus: extensive infestation of the feet with verrucous and crusty deposits and therapy-resistant deep ulcers with rough edges.
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