Apical Cap

Apical capping was noted in 55% of patients in a series of 29 patients with pancoast tumor. Such caps may be unilateral and several series have reported prevalence of 6-11%. A patient with unilateral or asymmetrical apical cap of greater than 5 ml or enlarging cap warrants further investigation.

References:

  1. AJR 140:25-30, January, 1983.