MedGen

Any infection caused by a virus of the genus Hantavirus, which is transmitted by aerosolized rodent excreta or rodent bites, that can result in a variety of clinical manifestations from hemorrhagic fever with renal syndrome to a pulmonary syndrome. [from NCI]

A rare viral hemorrhagic fever characterized by virus-induced microvascular leakage rapidly leading to a severe illness with diffuse pulmonary edema and respiratory failure. These symptoms set in after a short first disease stage with fever, myalgia, and headache, followed by severe gastrointestinal symptoms such as abdominal pain, vomiting, and diarrhea. The high lethality of the disease is due to the possible development of hypotension and cardiogenic shock. [from ORDO]

A nevus is a type of hamartoma that is a circumscribed stable malformation of the skin. [from HPO]

A oval and round, colored (usually medium-to dark brown, reddish brown, or flesh colored) lesion. Typically, a melanocytic nevus is less than 6 mm in diameter, but may be much smaller or larger. [from HPO]