Application of Dynamic ¹⁸F-FDG PET/CT for Distinguishing Intrapulmonary Metastases from Synchronous Multiple Primary Lung Cancer

Table 1

Patient and tumor characteristics.

Category	sMPLC group ()		IPM group ()	value
Gender
Male	5		10	0.29
Female	14		14
Age () (years)				0.47
Height () (cm)				0.60
Weight () (kg)				0.62
FDG injection dose () (MBq)				0.94
Smoking history
Nonsmoker	15		16	0.62
Former smoker	1		3
Current smoker	3		5
Conclusion mainly based on
Histopathologic subtype	12		0
Gene mutation	1		0
Clinical and radiologic features	6		24
Location
Unilateral	13		17
Bilateral	6		7
Histopathology	Primary lung tumor	Synchronous pulmonary tumor
SCC	0	0	3
AC	19	19	18
Other	0	0	3

sMPLC: synchronous multiple primary lung cancer; IPM: intrapulmonary metastases; SCC: squamous cell carcinoma; AC: adenocarcinoma; SD: standard deviation of the mean.