Table 2.

Clinical characteristics of ASC

Clinical factors	Characteristics
Morbidity	0.4%–4% of all lung carcinomas6
Sex	Mainly males8,12–14
Average age at the time of diagnosis of ASC	68.7 years12
Smoking history	Most patients with ASC have smoking history9,10,12,15
Location in CT findings	Peripheral types more than central9
Pathological subtype
ADC-predominant	Mainly peripheral located;9,19,20 peripheral GGO can be a predictive marker21
SCC-predominant	Mainly central located9,19,20
Structure-balanced	Has a better prognosis compared to other types15,18

Abbreviations: ADC, adenocarcinoma; ASC, adenosquamous carcinoma of the lung; CT, computed tomography; GGO, ground-glass opacity; SCC, squamous cell carcinoma.