Pulmonary scar carcinoma was described as a distinct clinicopathologic
al entity over 50 years ago, There are many theories on the formation
of this entity, We present three cases of pulmonary scar carcinoma wit
h a high ratio of adenocarcinoma, One patient had a favorable postoper
ative course despite a 14-month delay in treatment, Necropsy specimen
of another patient showed two primary scar carcinomas unrelated to eac
h other, Literature review and discussion of etiology, diagnosis, and
treatment modalities of pulmonary scarcarcinoma were done, Pathogenesi
s and prognosis of the neoplasms associated with apical scars are not
clearly understood.