Revenue passenger miles. Revenue passenger miles (or RPM) measures demand for air transport. Itâs calculated as the number of revenue passengers multiplied by the total distance traveled. Itâs also called airline âtraffic.â. An increase in RPM is positive for an airline company. It means that more passengers are using their service.
Definition. An armpit lump is a swelling or bump under the arm. A lump in the armpit can have many causes. These include swollen lymph nodes, infections, or cysts.
An armpit lump in a woman should be checked by a health care provider immediately, as it may be a sign of breast cancer. Lumps in the armpit may have many causes. Lymph nodes are filters that can catch germs or cancerous tumor cells. When they do, lymph nodes increase in size and are easily felt.