Kikuchi-Fujimoto Disease: A Case Series and Review of the Literature.

Kikuchi-Fujimoto disease (KFD), also known as histiocytic necrotizing lymphadenitis, is a rare, self-limiting disorder characterized by fever typically lasting for 1 week up to 1 month and painful necrotizing lymphadenopathy, primarily affecting young adults of Asian ancestry. Although the exact cause remains unclear, infectious and autoimmune mechanisms have been implicated in the pathogenesis of the disease. In this case series, we aim to describe the histopathological features of KFD over a ten-year period at Mount Sinai Medical Center of Florida, and review the current understanding of its pathogenesis, clinical presentation, diagnosis, and management.

Refractory immune thrombocytopenic purpura (ITP) secondary to prior COVID-19 infection requiring a splenectomy.

Immune thrombocytopenic purpura (ITP) is an uncommon condition resulting from the autoimmune destruction of platelets. A man in his mid-30s, who had received three doses of the SARS-CoV-2 vaccine a year prior, was diagnosed with ITP 3 weeks after contracting COVID-19. Mechanisms of SARS-CoV-2 induced thrombocytopenia may include bone marrow depletion, coagulation consumption, mutations resulting in cytokine release or molecular mimicry leading to autoimmunity.

The Usefulness of Elastin Staining to Detect Vascular Invasion in Cancer.

Tumor prognosis hinges on accurate cancer staging, a pivotal process influenced by the identification of lymphovascular invasion (LVI), i.e., blood vessel and lymphatic vessel invasion.