Senile warts are tumors?

Senile warts are tumors, senile warts also known as seborrheic keratosis, is due to delayed maturation of keratinocytes caused by a benign intradermal tumor. Most occur in the elderly, young people can also occur, generally occurs in 30-40 years old. The rash begins as small and flat, clear patches, smooth surface or papilloma-like, light brown or tea-brown. The lesion will gradually increase, forming a round, oval or irregular shape, 1mm to 1 cm or several cm in diameter, with clear edges and papilloma-like surfaces. It will gradually dry and rough, lose luster, and form a layer of oily thick scab. Senile warts can be single or multiple, mostly 20-40. There are no normal symptoms, and occasionally there will be itching.