An important paraneoplastic syndrome characterized by the explosive blooming of hundreds and hundreds of
seborrheic keratoses—on chest, back, and face. First described by the German Edmund Leser (1828–1916)
and the French Ulysse Trélat (1828–1890), it is most commonly due to an adenocarcinoma, especially of the
GI tract. Yet, an eruption of seborrheic keratoses may also develop after an inflammatory dermatosis, such as a severe sunburn or eczema.
seborrheic keratoses—on chest, back, and face. First described by the German Edmund Leser (1828–1916)
and the French Ulysse Trélat (1828–1890), it is most commonly due to an adenocarcinoma, especially of the
GI tract. Yet, an eruption of seborrheic keratoses may also develop after an inflammatory dermatosis, such as a severe sunburn or eczema.