Prognostic parameters for recurrence of papillary thyroid microcarcinoma

BMC Cancer

Table 5 Multivariate analyses of clinical recurrence with clinicopathological parameters in 293 patients with PTMC according to surgical extent

Baseline characteristics	Patients with total or near-total thyroidectomy (n = 166)			Patients with hemi- or subtotal thyroidectomy (n = 127)			Overall (n = 293)
	HR	95% CI	P	HR	95% CI	P	HR	95% CI	P
Gender
Men	4.58	1.08–19.5	0.04	4.6	0.83–25.4	0.08	4.9	1.62–14.8	0.005
Women	1.00	-	-	1.00	-	-	1.00	-	-
Lymph node metastasis			0.12						0.049
pNx	0	NC	0.99				1.85	0.44–7.79	0.4
pN0	0	NC	1				0	NC	0.99
pN1a^a	1.00	-	-				1.00	-	-
pN1b^b	7.32	1.46–36.7	0.015				4.91	1.49–16.2	0.009

^a Metastases to level VI lymph nodes (pretracheal, paratracheal, and prelaryngeal/Delphian lymph nodes), classified as N1a in the 2002 TNM staging.
^b Metastases to unilateral, bilateral, or contralateral cervical superior mediastinal lymph nodes, classified as N1b in the 2002 TNM staging.
HR, hazard ratio; CI, confidence interval; NC, cannot calculate

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