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.
Causes of Armpit (Underarm) Pimples, Sores and Lumps. Pimples, sores and lumps under the arms are not uncommon as is itching which often occurs for no obvious reason. These lesions and symptoms may resolve on its own in many instances without any need for treatment.