Naevus araneus: in the 43-year-old man there are isolated red spots, 0.1-0.2 cm in size, and red, smooth papules with a central arterial nodule and radiating capillary ectasia.
Nodular or nodular basal cell carcinoma. Relatively inconspicuous, non-symptomatic, red nodule with a smooth surface (see reflected light image as inlet). The bizarre (tumor) vessels of the basal cell carcinoma become visible in reflected light.
Basal cell carcinoma, nodular, sharply defined, shiny, smooth tumor interspersed with bizarre "tumor vessels", which are particularly prominent in this nodular basal cell carcinoma and play an important role in the diagnosis.
Nodular or nodular basal cell carcinoma: Relatively inconspicuous, non-symptomatic, red nodule with a smooth surface (see incident light image as inlet); the bizarre (tumor) vessels of the basal cell carcinoma become visible in incident light.
Lymphomatoid papulosis: Patient, 73 years of age. Within a few days a red, solid nodule appeared on the nasal wing. In the biopsy atypical dermal infiltrates with CD30-positive blasts. Within a few more days multiple similar nodules spread over the upper trunk.
At control 8 weeks after initial diagnosis the nodule at the nasal fossa is completely regressive leaving a milieu, but a new nodule 5 mm further cranially. The nodules at the trunk are regressive.
Basal cell carcinoma nodular (detailed picture), characterized by the bizarre "tumor vessels" marked with arrows, which become visible with the incident light technique.
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