Primary tumors and results of USgFNAC, aspiration cytology guided by fused images of freehand SPECT-USgFNAC, and SNB of 6 patients with early-stage head and neck cancer

Patient	Primary Tumor	USgFNAC			Freehand SPECT-USgFNAC			SNB
		Level	Size (mm)	Cytopath	Level	Size (mm)a	Countsb	Cytopath		Histopath
1	T1 tongue L SCC				II L	2.5	52710	−	II L	−
					II L	1.5	555	−	II L	−
					II L	1.5	35340	−	II L	−
									III R	−
2	T2 tongue L SCC	II L	6.2	−	II L	4.8	3051	−	II L	−
		III L	7.4	−	III L	7.1	40151	−
		IV L	5.1	−	IV L	4.8	36354	−	IV L	−
3	T2 ala nasi R Merkel cell carcinoma				I R	4.0	2847	0	I R	+ (i+)
					I R	4.3	208	−
		II R	6.4	−	II R	6.6	204	0
					I L	4.9	409	0
4	T1 auricle R melanoma	P R	2.8	−	P R	2.3	74944	−	P R	+ (mi)
					II R	2.4	241233	−	II R	−
5	T2 floor of mouth L SCC	I R	4.5	−	I R	2.8	2782	−	I R	−
					I R	5.8	6707	−
		I L	4.9	−	I L	3.9	2080	−	I L	−
		I L	4.4	−	I L	3.9	3124	−
					I L	4.5	553	−
6	T1 tongue L SCC	R II	4.8	−
		L I	4.5	−	L I	4.2	207518	−	L I	−
		L I	4.5	−
		L I	4.5	−
		L II	5.9	−
					L II	2.8	45942	−	L II	+ (mi)

Note:—SCC indicates squamous cell carcinoma; Cytopath, cytopathologic examination; Histopath, histopathologic examination; L, left; R, right; P, in parotid gland; i+, isolated tumor cells; mi, micrometastasis; −, tumor negative; 0, inconclusive; + tumor positive.

^aSize in minimal axial diameter.

^bCounts per 60 seconds.