<unk>  is similar to AGEP (Acute generalized exanthematous pustulosis) from pustular psoriasis; criteria for histopathologic distinction have been proposed: papillary edema, vasculitis, exocytosis of eosinophils and single-cell necrosis of keratinocytes in AGEP and acanthosis and papillomatosis in pustular psoriasis. An example that illustrates the difference between SP and<unk>  and the histology diagnosis is … “a markedly obese, 41-year-old Japanese man who had suffered from psoriasis vulgaris for several years visited hospital with elephantiasis-like swelling of his lower legs of three months' duration. His right lower leg showed marked papillomatosis with thick scales, and the left lower leg was eroded and papillomatous. Although direct lymphography of his lower extremities showed no abnormality, indirect lymphography revealed local lymphatic damage in the involved skin”. Histological examination showed hyperkeratosis, marked papillomatosis, proliferation of capillaries in the upper dermis, and lymphectasia in the lower dermis. It was suspected that obesity and the preceding psoriatic lesions caused local lymphatic disturbances, followed by the development of<unk> .
Stasis papillomatosis
Florid cutaneous papillomatosis
Papillomatosis
Coats' disease
PUVA keratosis
Tuberculous gumma
Acanthocheilonemiasis
Smokeless tobacco keratosis