Objective To explore the manifestation and diagnostic value of CT in retinoblastoma. Methods Twentythree cases of retinoblastomas proven by operation and pathologic examination were collected. Their CT images, clinical symptoms and pathologic results were retrospectively analyzed. Results Twentythree patients of retinoblastomas aged from 4 months to 9 years (mean 2.4 years). CT images showed soft tissue mass (shaped as node, crescentshaped or occupied the entire space of the eyeball) was in the globe of all cases. There was calcification in 19 cases (82.6%), including “small pinch” in 12 cases or “patches” in 7 cases. Five cases were found the optic nerve thickened (21.7%), and 1 case of intracranial invasion through the optic nerve canal (1/23), and 6 cases of retina detachment (6/23). The lesion showed mild or moderate enhancement after intravenous contrast medium were performed. Conclusion CT has an advantage on showing the size, shapes, intrastructures and invasive degree of the lesion, and is meaningful to the diagnosis and differential diagnosis of retinoblastoma.

OBJECTIVE：To investigate the situ ation and characteristics of ADR reports in the elderly patients （≥65 years old ） of Sichuan province ，and to provide reference for guaranteeing the safety of drug use. METHODS ：ADR reporting data of elderly patients collected by spontaneous reporting system of Sichuan ADR monitoring center from 2013 to 2019 were collected ，and then analyzed in respects of report types ，reproting institution ，relationship，patienst’age，gender，nationality，drug type ，organ/system invovled. RESULTS & CONCLUSIONS ：In the past seven years ，175 431 cases spontaneous ADR were collected by Sichuan ADR monitoring center ，and the annual proportion of “general”ADR reports decreased from 78.93％ in 2013 to 60.50％ year by year ； the annual proportion of “new general ”and“serious”ADRs increased year by year ，among which that of “new general ”ADR increased more obviously. The main reporting institutions were medical institutions ，accounting for 92.79％-98.87％ of the total annual reports. The enthusiasm of enterprises and individuals to report ADR needed to be improved ；8 031 cases（4.58％）were “positive”relationship，21 283 cases（12.13％）were“likely”，146 117 cases（83.29％）were“possible”. Except that the gender of 272 cases were not reported ，there were 88 176 male cases and 86 983 female cases ；most of them were 65-74 years old （104 962 cases，59.83％）. The reports covered 19 nationalities，among which the re were 166 752 cases（98.72％）of Han nationality. The distribution of ADR related drug categories in elderly patients of Yi ， Tibetan and Qiang nationalities was significantly different from that of Han nationality （P＜0.01）. The top three drug categories in the total frequency were anti-infective drugs （31.10％），traditional Chinese medicine com （18.27％），and central nervous system drugs （9.99％）. The injection route was the most likely to cause ADR （72.12％）. ADR mainly involved s kin and its appendants （21.47％）， gastrointestinal system （19.61％）and central and peripheral nervous system （18.55％）. Aminophylline injection was the only dr ug in the top 10 drugs leading to “new general ”ADR for consecutive 7 years. Cefotaxime sodium for injection ，Ceftriaxone sodium for injection ，Cefoperazone sodium and sulbactam sodium for injection were the top 10 drugs causing “severe”ADR in consecutive 7 years，which should be paid more attention in clinic.