Table 2.

Patient Characteristics at Surgical Resection.

ID	Origin site	Primary site	Lymphadenopathy	Accumulation of FDG	Pathological staging
1	Ad	R, S2	Mediastinum		pT1N0M0 (|A)
2	Ad	R, S9	BHL+mediastinum		pT2N0M0 (|B)
3	Ad	R, S5	No swelling		pT1N0M0 (|A)
4	Sq	L, S1+2	BHL+mediastinum		Unknown*
5	Sq	R, S8	Mediastinum		pT1N0M0 (||A)
6	Sq	R, S8	BHL+mediastinum		pT1N0M0 (|A)
7	Sq	R, S10	UHL+mediastinum	5.62	pT2N0M0 (|B)
8	Ad	L, S4-5	Mediastinum	Accumulated†	pT1N0M0 (|A)
9	Ad	R, S10	BHL+Mediastinum	Accumulated†	pT2bN0M0 (||A)
10	Ad	L, S1+2	BHL+mediastinum	7.97	pT2aN0M0 (|B)

BHL suggestive of lymph node sarcoidosis was only seen in 5 of 10 patients. Significant accumulation of FDG were seen in 4 patients. However, postoperative staging of lung cancer was all N=0 except for one case in which lymphadenectomy was not carried out.

*Surgical resection was not carried out to avoid invasive surgery.

^†Exact SUV was not known but accumulation was reported to be significant.

FDG: fluorodeoxyglucose, BHL: bilateral hilar lymphadenopathy, UHL: unilateral hilar lymphadenopathy, SUV: standardized uptake value