Background and Aim: Hobnail hemangioma ( targetoid hemosiderotic hemangioma( is a benign vascular tumor that is usually characterized as a papule with an ecchymotic halo on the periphery. It is usually seen in young adults and most commonly affects limbs. The lesion is seen equally in both sexes. https://hyobnunj6f0t.timeblog.net/70682881/valores-de-referencia-para-las-pruebas-de-cooper-y-de-20m-de-ida-y-vuelta-en-población-residente-en-altitud-elevada-reference-values-for-cooper-and-shuttle-run-tests-in-population-living-at-high-altitude