Lichen planus. overview with pathognomic fine-tissue architecture of the LP. ligamentous (not reaching into the deeper parts of the dermis) lymphocytic infiltrate which is "crowded" closely to the epithelium. moderate, continuous acanthosis and hypergranulosis as well as severe orthohyperkeratosis. in the right section of the picture distinct cleft formation in the area of the dermo-epidermal junction zone.
Dermatosis, acute febrile neutrophils (Sweet Syndrome): suddenly appearing inflammatory, succulent, livid red papules that have conflued into larger and plaques, combined with fever and feeling of illness.
Verruca seborrhoica. 56 year old patient with differently configured and colored disseminated papules and plaques localized on the trunk. 0.2-1.5 cm tall, flat raised (as if glued on), yellow, yellow-brown or brown-black papules or plaques with a smooth, shiny surface, which is broken up by numerous black horn inclusions, giving Verruca seborrhoica a surface characteristic that looks like punched.
Sweet syndrome: reddish-livid, succulent, pressure-dolent, infiltrated, solitary and partly papules confluent to plaques over the spinal column in a 47-year-old female patient. 1 week before the onset of the disease intake of cotrimoxazole due to a urinary tract infection. temperatures > 38 °C
Acrodermatitis papulosa eruptiva infantilis. disseminated standing, partially eroded papules in an 18-month-old infant. HV only to be assessed in the context of the overall picture.
acne, majorca acne. single papules. round papules with ectatic papillary capillaries. in the surroundings numerous equally sized round sweat gland ostia in sun-tanned skin.
Psoriasis: pre-treated psoriatic plaques and papules (relapsing-active psoriasis). The textbook described scaling is missing (caused by pre-treatment). However, this is rather the normal finding nowadays.
Acne comedonica. numerous comedones on the right shoulder blade of a 17-year-old patient. 3 years ago recurrent papules and pustules in the face as well as comedones in the area shown.
Nevus, melanocytic, halo-nevus. numerous depigmented, roundish, sharply defined, smooth, white spots with centrally located brown, slightly raised papules. 25-year-old patient with multiple halo- or sutton nevi occurring within a few months.
Molluscum contagiosum: General view: Strongly itchy suberythrodermia with infestation of the entire anterior trunk, the back and the arms and legs of a 65-year-old woman with psoriasis vulgaris persisting since childhood; submammary and in the xiphoid region reddish, shiny, partly glassy appearing papules of 0.5-0.7 cm size.
Basal cell carcinoma, pigmented basal cell carcinoma, partly nodular, partly growing only in the skin level, with rough consistency, ulceration at the right tumor margin, difficult clinical differentiation to a nodular malignant melanoma.
Syphilide, papular: multiple, disseminated, dense, small, reddish papules and nodules on a tanned integument in a 67-year-old patient; distinctly palpable, non-painful axillary and inguinal lymph nodes.
transient acantholytic dermatosis. detail enlargement from previous overview. initial papules, about 1-2 mm in size, deep red with slightly eroded, occasionally scaly surface, characterize the picture. in addition, older plaques (top right) resulting from confluent papules with slight marginal scaling are visible. the nikolski phenomenon is negative.
Melanoma, malignant: diffuse, cutaneous metastasis (amelanotic metases) in the area of the thoracic wall; primary tumor: nodular melanoma pT3a; post-operative 2 years ago.
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