Category: V

Radiography of varicose veins after the injection of a contrast medium.  

Varicella in which necrosis occurs around the vesicles, resulting in gangrenous ulceration.  

An acute infectious disease, usually seen in children under age 15, caused by varicella-zoster virus. Its hallmark is a rash, described clinically as having a “dewdrop on a rose petal” pattern, scattered in clusters (“crops”) over the trunk, face, scalp, upper extremities, and sometimes the thighs. It is transmitted mainly by respiratory droplets that contain…

Exposed to steam in order to clean, decontaminate, or sterilize. Clotting factors are steam-treated to remove potentially infectious agents such as pathogenic viruses.  

The conversion of a liquid or solid into vapor.  

A volatile liquid that evaporates on contact with the skin, causing a local refrigerant effect and providing local anesthesia for injections, intravenous insertions, and other procedures.  

Irritation of the skin, mucous membranes, and conjunctiva sometimes experienced by workers handling raw vanilla. It is caused by a mite.  

Conductive deafness caused by otosclerosis-like changes in the temporal bone. Blue sclerae and osteogenesis imperfecta are also present.  

A slender parasitic catfish indigenous to the Amazon. It attaches itself to the gills of other spiny fishes and extracts blood for food. It occasionally swims into and inserts itself in the urethra or rectum of human bathers, from whom it must be surgically removed. This nearly transparent vertebrate is also known as the “toothpick…

The process of cutting through a valve.