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.
It causes swelling, pain and fever. This is common during an arm injury causing the axillary lymph nodes under the armpits enlarge. Since a painful lump in the armpit is associated with breast cancer; an infection in the breast tissue of the armpit could also be painful and its inflammation associated with cancer.