Report Abuse. 1  Since blood donations are generally a pint, and there are 8 pints in a gallon, 8 donations would be a gallon as well. 2  This Site Might Help You. 3  For the best answers, search on this site https://shorturl.im/avFM4.  A gallon is 4.54 liters.
Perineural cysts, which are also known as Tarlov cysts, are fluid-filled sacs that form on nerves at the base of the spine. A person with such cysts would likely never know it. They almost never cause symptoms. When they do cause symptoms, however, the most common is pain in the lower back, buttocks, and legs.
1 Epidermoid (sebaceous) cyst: usually benign swelling in the skin arising in the sebaceous gland, typically filled with yellowish sebum. These are usually easily seen as they lead to a swelling of the skin. If they become large enough, they can be painful and unsightly.  Breast cyst: a fluid-filled sac within the breast.