Table 1 Clinicopathological features of the patients.

Patient No.	Age	Histology	T	N	p-Stage, UICC 7th ed.	p-Stage, UICC 8th ed.	Tumour size (mm)
1^a	71	MP	t1	n0	IA	IA3	22
2^a	70	Pap	t1	n0	IA	IA3	23
3^a	70	Solid	t1	n0	IA	IA3	29
4^a	42	Acinar	t1	n0	IA	IA3	27
5^a	76	Mucinous	t2	n0	IB	IIA	45
6^a	76	Pap	t2	n0	IB	IB	39
7	66	Acinar	t2	n0	IB	IB	34
8	46	Acinar	t2	n2	IIIA	IIIA	38
9	73	Lep	t1	n0	IA	IA2	18
10	66	Lep	t1	n0	IA	IA3	22
11	72	MP	t1	n0	IA	IA3	24
12	82	Mucinous	t1	n0	IA	IA2	12
13	65	Mucinous	t4	n0	IIIB	IIIA	80
14^b	64	Pap	t1	n0	IA	IA3	26
15	64	Pap	t1	n0	IA	IA3	25
16	54	Pap	t1	n0	IA	IA2	17
17	72	Pap	t1	n0	IA	IA2	20
18	60	Pap	t1	n1	IIA	IA3	27
19	70	Solid	t1	n0	IA	IA2	15
20	62	Solid	t1	n0	IA	IA2	20
21	75	Solid	t1	n0	IA	IA3	21
22	77	Solid	t2	n0	IB	IIA	43
23	58	Solid	t2	n0	IB	IIA	40
24	74	Solid	t1	n1	IIA	IIB	23
25	72	Solid	t2	n1	IIB	IIB	38

^aDenotes patients who underwent both liquid chromatography–mass spectrometry and imaging mass spectrometry analyses.
^bSamples from Patient 14 were used in the histological analysis, electron microscope imaging, and liquid chromatography–mass spectrometry and imaging mass spectrometry analyses shown in Figs 3 and 4.
MP = Micropapillary. Pap = Papillary. Lep = Lepidic. UICC = Union for International Cancer Control.

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