Hepatitis D is caused by a defective RNA virus (delta agent) that can replicate only in the presence of hepatitis B virus. Hepatitis B infection rarely occurs as coinfection during acute hepatitis B or as superinfection during chronic hepatitis, also type B.
Cutaneous angioma
Skin angiomas are mostly benign neoformations due to the abnormal cellular development of sanguneous or lymphatic vessels. The most common form of cutaneous angioma is hemangioma, which consists of a proliferation