Objective To explore the relationship between the status of the cervical lymphatic metastasis of papillary thyroid carcinoma(PTC)at cNo stage and tumor recurrence and the patient' s prognosis.Methods The clinical data of 498 cNo PTC patients admitted from 1986 to 1990 were retrospectively analyzed.Results All the patients were followed up for more than 10 years.16 patients died of PTC,among them 3 for metastasis,13 for local recurrence.The total cervical lymphatic metastasis rate in these 498 patients was 52.2％,in 260 cases in which detailed data were available: rate was 14.1％ in zone Ⅱ,27.1％ in zone Ⅲ,24.6％ in zone Ⅳ,12.5％ in zone Ⅴ,and 20.1％ in zone Ⅵ respectively.According to the appearances of microscopic pathology,the cervical lymphatic metastasis rates in 498 cases of cNo PTC were collected as following: uncapsuled group was 65.6％,extracapsular group was 64.5％,extralobal group was 56.5％,involved the surrounding tissue and structure group was 52.0％,focal cancerous focus group was 33.3％,latent sclerosis group was 26.9％,encapsuled and introcapsule group was 0.The cervical recurrence rate was only 2％ in the complete function neck dissection group and 9.9％ in the selective center neck dissection group.Conclusions In cNo PTC the most common cause of death was local recurrence.Prophylactic function complete neck dissection should be performed for cNo PTC cases of highly invasive type such as without tumor capsule,extracapsular,extralobal or surrounding tissue invasion.

Objective To analyze cellular immunological function of cancer patients in order to provide an evidence for immunological treatment to malignant tumors.Methods T lymphocyte subgroups(total T lymphocytes,Th,Ts,Th/Ts and NK)were determined by flow cytometry in 54 patients with lung cancer,42 with gynecologic cancer,44 with gastrointestinal cancer and 30 healthy individuals.Statistical data were analyzed by SPSS.Results T helper lymphocytes covered(29.41?9.24)%,(34.62?10.27)%,and(32.48?11.64)% respectively in lung,gynecologic and gastrointestinal cancer,significantly lower than that of health people(P