Incidental extravascular findings in computed tomographic angiography for planning or monitoring endovascular aortic aneurysm repair: Smoker patients, increased lung cancer prevalence?

Table 1 Recommendations for follow-up and management of single solid nodule[20]

Nodule size (mm)	Low risk patient1 (mm)	High risk patient2 (mm)
< 6	No routine FU	Optional CT at 12 mo
6-8	CT at 6-12 mo, then consider CT at 18-24 mo	CT at 6-12 mo, then CT at 18-24 mo
> 8	Consider CT, PET/CT, or tissue sampling at 3 mo	Consider CT, PET/CT, or tissue sampling at 3 mo

¹Minimal or absent history of smoking and of other known risk factors;

²A smoking history ≥ 30 p-y and quitting smoking within the past 15 years and/or the presence of other known risk factors. CT: Computed tomography; FU: Follow-up; PET: Positron emission tomography.

Table 2 Recommendations for follow-up and management of multiple solid nodules[20]

Nodule size (mm)	Low risk patient1 (mm)	High risk patient2 (mm)
< 6	No routine FU	Optional CT at 12 mo
6-8	CT at 3-6 mo, then consider CT at 18-24 mo	CT at 3-6 mo, then at 18-24 mo
> 8	CT at 3-6 mo, then consider CT at 18-24 mo	CT at 3-6 mo, then at 18-24 mo

¹Minimal or absent history of smoking and of other known risk factors;

²A smoking history ≥ 30 p-y and quitting smoking within the past 15 years and/or the presence of other known risk factors. CT: Computed tomography; FU: Follow-up.

Table 3 Recommendations for follow-up and management of single subsolid nodule[20]

Nodule size (mm)	Ground-glass	Part solid
< 6	No routine FU	No routine FU
≥ 6	CT at 6-12 mo to confirm persistence, then CT every 2 yr until 5 yr	CT at 3-6 mo to confirm persistence. If unchanged and solid component remains <6 mm, annual CT should be performed for 5 yr

CT: Computed tomography; FU: Follow-up.

Table 4 Recommendations for follow-up and management of multiple subsolid nodules[20]

Nodule size (mm)
< 6	CT at 3-6 mo. If stable, consider CT at 2 and 4 yr
≥ 6	CT at 3-6 mo. Subsequent management based on the most suspicious nodule(s)

CT: Computed tomography.

Table 5 Incidental findings

Patients (n)	Findings
31	Pleural effusion
5	Atelectasis
8	Pneumonia
16	Pericardial effusion
48	Cardiomegaly
57	Coronary artery calcifications
0	Bone findings
23	Hiatal hernia
94	Emphysema
39	Mediastinal or hilar adenopathy

Table 6 Computed tomography nodules characteristics

Nodules size	n (tot 102)
Pulmonary micronodule (< 4 mm)	43
Pulmonary nodule (> 4 mm and < 30 mm)	51
Pulmonary mass (> 30 mm)	8
Nodules characteristics	n
Solid	73
Ground-glass	21
Partially solid	8
Spiculated	9
Smooth	4
Pleural tag	3
Bronchus sign	6
Calcifications	7
Intralesion fat	4
Intralesional air	2