Table 1 Clinical and histopathologic parameters (patients with tumour resection: 36)

Parameter	Subtype	Number	%
Histology	Squamous	23	63.9
	Adeno	13	36.1
ypT-category^a	T0	2	5.6
	T1	1	2.8
	T2	7	19.4
	T3	25	69.4
	T4	1	2.8
ypN-category^b	N0	15	41.7
	N1	21	58.3
R-category^c	R0	31	86.1
	R1	5	13.9
	R2	0	0
Grading	G1	0	0
	G2	12	33.3
	G3	24	66.7
Regression grade^d	I	15	41.7
	II	9	25
	III	10	27.8
	IV	2	5.6

^aHistopathologic tumour category after neoadjuvant therapy according to UICC (Union Internationale Contre Le Cancer, 5th edition, 1997).
^bHistopathologic lymph node category after neoadjuvant therapy according to UICC (Union Internationale Contre Le Cancer, 5th edition, 1997).
^cResidual tumour category according to UICC (Union Internationale Contre Le Cancer, 5th edition, 1997).
^dGrade I: >50% vital residual tumour cells (VRTC), grade II: 10–50% VRTC, grade III: nearly complete response (NCR) with <10% VRTC and grade IV: complete response (pCR, ypT0).

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