Melanoma, malignant, acrolentiginous. solitary, chronically stationary, slowly increasing, localized at the right big toe, measuring approx. 0.5 cm, touch-sensitive, red node ulcerated with a dark pigmented part (see circle and arrow marking) Histology: tumor thickness 2.7 mm, Clark level IV, pT3b N0 M0, stage IIB.
lymphomatoid papulosis: previously known recurrent clinical picture in a 34-year-old female patient. rapid, painless knot formation within 14 days. this finding healed spontaneously with scarring under central necrosis after 3 months. no ectropion!
Basal cell carcinoma nodular: Nodule existing for several years, completely without symptoms, size: 2.5 x 3.0 cm. sharply defined. 73-year-old patient. note the bizarre peripheral vessels.
Prurigo simplex subacuta:0.3-0.4 cm large, red, centrally eroded or ulcerated, moderately sharply defined, interval-like, violently itching papules, which are shown in the present image detail in different stages of development.
Keloids: Flat, smooth-surfaced, firm, red nodules, increased vascular drawing. In this clinical picture a dermatofibrosarcoma protuberans can be excluded by differential diagnosis.
Lymphomatoid papulosis. 64-year-old patient with a history of 15 years. recurrent, intermittent course with formation of 4-10 painless nodules, which grow to the size shown here within a few days. rapid central ulceration. healing within 8-10 weeks leaving a sunken scar. recurrent secondary infections of the ulcerated nodules. previously known non-Hodgkin lymphoma in full remission.
Erythroplasia. erythroplasia existing for years with transition to an invasive penis carcinoma. clearly recognizable "cloverleaf-like" progression zones of the carcinoma.
Cylindrome. multiple, chronically stationary (tumor problem since adolescence), disseminated (also on the capillitium), 0.5-4.0 cm large, firm, asymptomatic, red, smooth nodes.
Condylomata acuminata. 22-year-old colored patient with small, brownish, partly confluent, continuously increasing papules on the prepuce and penis shaft. Typical condylomas are also found on the glans penis, perianal and anal canal.
Collagenosis, reactive perforating. 12-month-old female patient: Itchy papules with a central depression and a hyperkeratotic clot on the upper back and the upper arm extensor sides.
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