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.
First, because of the number of lymph nodes in the area, itching can be the result of a lymph node problem. Secondly, when your arm is at your side, your armpit is closed. The area is therefore constantly warm at times and damp as well, making it a breeding ground for bacteria and fungi.