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.
Get help from a doctor now âº. Arm Lump: Lumps under the skin can be caused by a number of conditions. Causes can include benign (harmless) cysts, lipomas (harmless fatty growths), and infections on the surface of the skin of the armpit.Lumps may be produced by enlarged lymph nodes.See your general surgeon for removal.et help from a doctor now âº. Arm Lump: Lumps under the skin can be caused by a number of conditions. Causes can include benign (harmless) cysts, lipomas (harmless fatty growths), and infections on the surface of the skin of the armpit. Lumps may be produced by enlarged lymph nodes. See your general surgeon for removal.