Sun-burn induced upper limb lymphedema 11 years following breast cancer surgery: A case report

BACKGROUND Upper arm lymphedema is a common complication one year after breast cancer surgery,which profoundly impacts patients'quality of life.CASE SUMMARY We reported a case of lymphedema induced by prolonged sun exposure 11 years after breast cancer surgery.CONCLUSION Breast screening,patient education and follow-up after hospital discharge could help to prevent upper-arm lymphedema.

Ultrasound features of primary non-Hodgkin’s lymphoma of the palatine tonsil:A case report

BACKGROUND Lymphomas are the second most common malignancy of the head and neck.In this region,the vast majority of extranodal lymphomas are located in the palatine tonsil,accounting for about 51%.Tonsillar lymphomas are aggressive tumors with intermediate-or high-grade histology.We here report a case of primary non-Hodgkin’s lymphoma of the palatine tonsil and analyze its ultrasound features.CASE SUMMARY A 40-year-old man presented with right palatine tonsil swelling for 2 mo after a cold,accompanied by dysphagia,snoring,and suffocation.He had no sore throat,fever,or history of upper respiratory tract infection or tuberculosis.The patient was generally in good health and denied other diseases.He was diagnosed with acute tonsillitis initially and treated with antibiotics for 7 d.However,there was no improvement with the treatment.Tonsil biopsy and ultrasound-guided biopsy of the biggest lymph node of the right neck showed the typical pathology of non-Hodgkin lymphoma.CONCLUSION Primary lymphoma of the tonsils is rare,and its diagnosis is challenging.Ul-trasound is a useful modality in diagnosing oropharyngeal diseases,and can clearly show the features of this tumor,but the final diagnosis should be estab-lished by histology.

Hydrogeochemical characteristics of groundwater and pore-water and the paleoenvironmental evolution in the past 3.10 Ma in the Xiong’an New Area,North China

The groundwater level has been continuously decreasing due to climate change and long-time overexploitation in the Xiong’an New Area,North China,which caused the enhanced mixing of groundwater in different aquifers and significant changes in regional groundwater chemistry characteristics.In this study,groundwater and sediment pore-water in drilling cores obtained from a 600 m borehole were investigated to evaluate hydrogeochemical processes in shallow and deep aquifers and paleo-environmental evolution in the past ca.3.10 Ma.Results showed that there was no obvious change overall in chemical composition along the direction of groundwater runoff,but different hydrochemical processes occurred in shallow and deep groundwater in the vertical direction.Shallow groundwater(<150 m)in the Xiong’an New Area was characterized by high salinity(TDS>1000 mg/L)and high concentrations of Mn and Fe,while deep groundwater had better water quality with lower salinity.The high TDS values mostly occurred in aquifers with depth<70 m and>500 m below land surface.Water isotopes showed that aquifer pore-water mostly originated from meteoric water under the influence of evaporation,and aquitard pore-water belonged to Paleo meteoric water.In addition,the evolution of the paleoclimate since 3.10 Ma BP was reconstructed,and four climate periods were determined by theδ18O profiles of pore-water and sporopollen records from sediments at different depths.It can be inferred that the Quaternary Pleistocene(0.78‒2.58 Ma BP)was dominated by the cold and dry climate of the glacial period,with three interglacial intervals of warm and humid climate.What’s more,this study demonstrates the possibilities of the applications of pore-water on the hydrogeochemical study and further supports the finding that pore-water could retain the feature of paleo-sedimentary water.