Ecological environment changes of mining areas around Nansi lake with remote sensing monitoring.

Underground mining activity has existed for more than 100 years in Nansi lake. Coal mining not only plays a supporting role in local social and economic development but also has a significant impact on the ecological environment in the region. Landsat series remote sensing data (1988~2019) are used to research the impact of coal mining on the ecological environment in Nansi lake.

Solitary oral ulceration as the first appearance of lymphomatoid papulosis: a diagnostic challenge.

Lymphomatoid papulosis (LyP) may involve any cutaneous site but the oral areas seems to be an unusual location. We report a 72-year-old patient who presented with a 1-week history of a solitary oral ulcer on the lateral tongue, which had raised and indurated borders. Although squamous cell carcinoma was initially diagnosed, the morphological, phenotypical and genotypical studies confirmed diagnosis of LyP.