Caliber-persistent labial artery: report of 3 cases.

The caliber-persistent labial artery is a vascular anomaly in which a primary arterial branch penetrates into the submucosal tissue without reduction in diameter. Most lesions are benign and do not require treatment, except for complications and/or on patient demands. In this way, noninvasive diagnostic tools are preferred such as high-resolution and color Doppler ultrasonography which allow direct observation of the lesion, assessing its exact location and diameter at every axis, as well as the blood flow velocity. An excisional biopsy of these lesions or even their surgical extirpation could have a fatal outcome with profuse bleeding

Clinical, dermoscopic and histopathological features of spontaneous scalp or face and radiotherapy-induced angiosarcoma

Cutaneous angiosarcoma is a rare, aggressive malignant vascular neoplasm with a poor prognosis.1, 2 Four main variants are currently recognised, namely; sporadic angiosarcoma (AS) of the scalp and face, lymphedema associated angiosarcoma (LAS), radiation\u2010induced angiosarcoma (RIA) and the recently described rare, aggressive epithelioid subtype.3, 4 Among these four variants, angiosarcoma of the scalp and face, also known as Wilson\u2013Jones angiosarcoma, senile angiosarcoma or malignant angioendothelioma is the most common. The disease mainly affects elderly individuals with a male predominance. LAS develops in the context of chronic lymphoedema after a mastectomy or other oncological or surgical interventions, whereas RIA occurs often years after radiotherapy in the radiation field.5 In oncology patients with post\u2010surgery induced chronic lymphoedema who have received additional radiation therapy, the exact differentiation between LAS and RIA is not clear