Keratoacanthoma. Image 1 of 2. Large keratoacanthoma,also known as molluscum sebaceum,on the back of a patient's hand. Keratoacanthomas are harmless skin nodules that most commonly develop on the face and arms of elderly people. They grow rapidly and in eight weeks can reach a diameter of 2 centimetres. They slowly disappear without treatment,but some patients prefer to have them surgically removed. Their cause is unknown,but may be related to sunlight exposure. Physically they are similar to skin cancers,and a histopathological study (study of diseased tissue) may be required to distinguish one from the other. See M190/088 for the same hand seen from above | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Ansary, Dr. M.A. |
Taille de l’image : | 3690 px × 2410 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |