Preferred Label : lung mass;
RADLEX synonyms : mass;
Definition : Radiographs and CT scans.—A mass is any pulmonary, pleural, or mediastinal lesion
seen on chest radiographs as an opacity greater than 3 cm in diameter (without regard
to contour, border, or density characteristics). Mass usually implies a solid or partly
solid opacity. CT allows more exact evaluation of size, location, attenuation, and
other features. (See also nodule.) [Fleischner Society] In the lung, mass is defined
as greater than 30mm in size.;
Origin ID : RID39056;
Automatic exact mappings (from CISMeF team)
Radiographs and CT scans.—A mass is any pulmonary, pleural, or mediastinal lesion
seen on chest radiographs as an opacity greater than 3 cm in diameter (without regard
to contour, border, or density characteristics). Mass usually implies a solid or partly
solid opacity. CT allows more exact evaluation of size, location, attenuation, and
other features. (See also nodule.) [Fleischner Society] In the lung, mass is defined
as greater than 30mm in size.
