Correlation between preoperative ultrasonic features of medullary thyroid carcinoma and postoperative recurrence

BMC Cancer

Table 1 Results of single factor K-M analysis related to recurrence of MTC

group	character	recurrence group (cases)	Non- recurrence group (cases)	Chi-square	P
Sex	male	12	30	1.542	0.214
Sex	female	5	27	1.542	0.214
Age	≤52.5	12	31	0.925	0.336
Age	>52.5	5	26	0.925	0.336
Preoperative calcitonin(a*)	≤565.8 pg/ml	1	25	6.363	0.012
Preoperative calcitonin(a*)	>565.8 pg/ml	11	23	6.363	0.012
Postoperative calcitonin(b*)	≤45.0 pg/ml	1	33	12.786	0.000349
Postoperative calcitonin(b*)	>45.0 pg/ml	15	21	12.786
Tumor size	≤40.0 mm	13	53	5.837	0.016
Tumor size	>40.0 mm	4	4	5.837	0.016
Capsular invasion	no	1	29	9.273	0.002
Capsular invasion	yes	16	28	9.273	0.002
Metastatic cervical lymph nodes	no	2	31	8.442	0.004
Metastatic cervical lymph nodes	yes	15	26	8.442	0.004

^*Notes: a. 60 cases with preoperative calcitonin; b. 70 cases with postoperative calcitonin

ISSN: 1471-2407