Clinicopathological Characteristics and Prognosis of Papillary Thyroid Carcinoma in Naturally Menopausal Women with Various Durations of Premenarche, Reproductive Periods, and Postmenopausal Stages

Table 1

Characteristics of the study population.

Variables	Median (range)
Age at diagnosis (years)	57 (44–80)
Age at menarche (years)	15 (10–19)
Length of reproductive life (years)	35 (16–45)
Years postmenopause (years)	8 (0–36)
Time of pregnancy (years)
Age at first birth	24 (16–35)
Age at last birth	30 (18–44)
Follow-up time (months)	54 (36–107)
Recurrence of cancer	Case, (%)
Present	17 (4.0)
Absent	412 (96.0)
Location of recurrence	Case, (%)
Residual thyroid tissues	11 (64.7)
Cervical lymph nodes	4 (2.5)
Distant metastasis	2 (11.7)
Dead of cancer	Case, (%)
Present	3 (0.6)
Absent	426 (99.4)