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.
Kidney cyst. Kidney cysts are round pouches of fluid that form on or in the kidneys. Kidney cysts can be associated with serious disorders that may impair kidney function. But more commonly, kidney cysts are a type called simple kidney cysts â noncancerous cysts that rarely cause complications.idney cyst. Kidney cysts are round pouches of fluid that form on or in the kidneys. Kidney cysts can be associated with serious disorders that may impair kidney function. But more commonly, kidney cysts are a type called simple kidney cysts â noncancerous cysts that rarely cause complications.