A new wave of growing antisemitism, driven by fringe Web communities, is an increasingly worrying presence in the socio-political realm. The ubiquitous and global nature of the Web has provided tools used by these groups to spread their ideology to the rest of the Internet. Although the study of antisemitism and hate is not new, the scale and rate of change of online data has impacted the efficacy of traditional approaches to measure and understand these troubling trends.In this paper, we present a large-scale, quantitative study of online antisemitism. We collect hundreds of million posts and images from alt-right Web communities like 4chan's Politically Incorrect board (/pol/) and Gab. Using scientifically grounded methods, we quantify the escalation and spread of antisemitic memes and rhetoric across the Web. We find the frequency of antisemitic content greatly increases (in some cases more than doubling) after major political events such as the 2016 US Presidential Election and the “Unite the Right” rally in Charlottesville. We extract semantic embeddings from our corpus of posts and demonstrate how automated techniques can discover and categorize the use of antisemitic terminology. We additionally examine the prevalence and spread of the antisemitic “Happy Merchant” meme, and in particular how these fringe communities influence its propagation to more mainstream communities like Twitter and Reddit. Taken together, our results provide a data-driven, quantitative framework for understanding online antisemitism. Our methods serve as a framework to augment current qualitative efforts by anti-hate groups, providing new insights into the growth and spread of hate online.

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The mandible is an uncommon presentation site for lymphoma and misdiagnosis is common. Eleven patients with lymphoma of the mandible were seen between 1947 and 1983. In 5 of the 11 patients, the diagnosis of lymphoma could not be established from the initial biopsy and additional material for examination was required. In three patients, this resulted in a partial or total removal of the mandible. In a recent histopathologic review, the diagnosis of diffuse large cell was made in seven, diffuse undifferentiated (non-Burkitt's) in two, diffuse undifferentiated (Burkitt's) in one, and unclassified in one. Using the Ann Arbor method of staging, six patients were determined to have stage IE disease; three had stage IIE, and two had stage IV. In 10 patients definitive treatment consisted of radiotherapy, chemotherapy, or a combination of both. Treatment was limited to surgery in one patient. The 5-year overall and disease-free survival rates were 62% and 50%, respectively. These results are comparable to those for lymphoma of other extranodal head and neck sites.

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