Medical Definition of resection. : the surgical removal of part of an organ or structure pancreatic resection resection of the lower bowel resection of a tumorâsee abdominoperineal resection, mikulicz resection, segmental resection, wedge resection.
Small crystals of calcium float in the fluid in the inner ear. These crystals can get into the semicircular canals and cause vertigo. When you change the position of your head, they then strike against nerve endings in the semicircular canals and cause the feelings of spinning.
Losing your balance while walking, or feeling imbalanced, can result from: 1  Vestibular problems. Abnormalities in your inner ear can cause a sensation of a floating or heavy head, and unsteadiness in the dark.  Nerve damage to your legs (peripheral neuropathy).