Objective To evaluate the association between iodine intake and treatment outcomes of radioiodine remnant ablation in patients with papillary thyroid cancer (PTC),and to investigate the determinants related to the ablation efficacy.Methods A total of 95 PTC patients (28 males,67 females;average age 39.8 years) without distant metastases from January 2013 to May 2014 were enrolled in this retrospective study.All patients underwent total thyroidectomy and 2-4 weeks of low iodine diet (LID) before initial 131I therapy.Patients were divided into 3 groups according to urinary iodine excretion (UIE):moderate-severe iodine deficiency group (0＜UIE＜50 μg/L,n =30),mild iodine deficiency group (50 μg/L≤UIE＜100 μg/L,n =26),adequate iodine group (100 μg/L ≤ UIE ＜ 300 μg/L,n =39).Patients were followed up for 3-6 months after radioiodine ablation,successful ablation was defined as no visible uptake in the thyroid bed on diagnostic 131I whole body scan and Tg level ＜2 μg/L (with negative TgAb),or no visible uptake in thyroid bed on posttreatment 131I whole body scan.x2 test,two-sample t test,Mann-Whitney u test and logistic regression analysis were performed.Results In all,84.2％ (80/95)of patients were successfully ablated.The successful rates in the three iodine intake groups were 96.7％ (29/30),84.6％ (22/26) and 74.4％ (29/39),respectively,with significant difference (x2=7.374,P＜0.05).Univariate analysis revealed that UIE,pre-treatment TSH,pre-treatment Tg and the amount of remnant thyroid tissue at ablation affected ablation efficacy (x2 =7.374,t =2.037,z =-2.966,x2 =4.144,all P＜0.05).Logistic regression showed that the level of pre-treatment Tg (P ＜ 0.05) and iodine intake (P ＜ 0.05) were independent factors of ablation efficacy.Conclusion Iodine intake before 131I remnant ablation is one of the important factors affecting treatment outcomes.Thyroid remnant could be more successfully ablated if reasonable LID protocols be adopted according to the iodine nutritional status before treatment.

Hepatocellular carcinoma (HCC) is a common malignant tumor with poor prognosis, and surgical resection is the preferred method for the treatment of HCC, but it has a limited therapeutic effect on advanced HCC, while systemic treatment plays an important role in the treatment of advanced unresectable HCC. This article summarizes the advances in systemic therapy for unresectable liver cancer in China and globally in recent years, including a variety of tyrosine kinase inhibitors (sorafenib, lenvatinib, regorafenib, and cabozantinib) and immune checkpoint inhibitors (atezolizumab, pembrolizumab, and nivolumab). The analysis shows that for patients with unresectable HCC, systemic therapy can prolong the survival time of patients to a certain extent, and combined treatment regimen has become a new research hotspot. Individualized systemic treatment strategies will be further explored in the future.

OBJECTIVE To provide a reference for the safe clinical use of meropenem. METHODS The relationship of adverse reactions was analyzed based on a case of febrile neutropenia after using meropenem in an infant after congenital heart surgery by clinical pharmacists. By retrieving Chinese and English databases， case reports of adverse reactions induced by meropenem in blood system were summarized and analyzed. Relevant risk signals of adverse events were excavated from the FDA Adverse Event Reporting System， and the characteristics of meropenem-induced hematologic adverse reactions were summarized. RESULTS This case was assessed as “very likely” according to the Naranjo’s assessment scale by clinical pharmacists. A total of 16 patients were included in the literature analysis， of which one was febrile neutropenia， 13 patients had grade 4 serious adverse reactions that were life-threatening or required urgent treatment. All adverse reactions improved after drug withdrawal. Data mining revealed that the median occurrence time of hematologic adverse events induced by meropenem was 6 d； neonatal thrombocytopenia， intravascular hemolysis and neutrophil count decrease were the top 3 signals of risk intensity for adverse events. CONCLUSIONS Early use of meropenem may induce serious life-threatening hematological adverse reactions， especially in infants and elderly， those who use higher doses of meropenem， those who have previous antibiotic allergies， those with complex underlying diseases， those who use multiple antibiotics in combination， and those who experience high fever and bleeding after medication.Close monitoring should be provided in clinical practice.