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A 19-year-old male patient presented with intermittent high fever and left cervical lymphadenopathy. The lymph node biopsy findings were interpreted as "Epstein-Barr virus (EBV)-associated lymphoproliferative disorder consistent with infectious mononucleosis." No molecular studies were performed at that time. The patient was followed without treatment. Five months later, the patient again presented with fever, lymphadenopathy, and splenomegaly. The lymph node biopsy showed features of a diffuse large B-cell lymphoma. Molecular studies on this lymph node biopsy showed a clonal EBV population, although polymerase chain reaction studies failed to reveal a clonal B-cell or T-cell population. A concurrent bone marrow biopsy showed features consistent with hemophagocytic syndrome. He had elevated ferritin, soluble interleukin-2 receptors and persistent EBV viremia. The patient responded to Rituxan for a short period with undetectable EBV levels. Subsequent right cervical lymph node, liver, and jejunal biopsies showed involvement by diffuse large B-cell lymphoma and the patient expired soon thereafter.
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http://dx.doi.org/10.1097/PAI.0b013e318233d72a | DOI Listing |
Wien Med Wochenschr
September 2025
Department of Internal Medicine, Istanbul Faculty of Medicine, Istanbul University, 34093, Istanbul, Turkey.
Rosai-Dorfman disease (RDD) is a rare histiocytic disorder that may clinically and histologically resemble IgG4-related disease (IgG4-RD), especially in the presence of IgG4-positive plasma cell infiltration. In this case, a 69-year-old woman with generalized lymphadenopathy, constitutional symptoms, and elevated IgG4 levels was initially suspected to have IgG4-RD based on core needle biopsy. However, further evaluation with excisional lymph node biopsy revealed emperipolesis and S100-positive histiocytes, confirming the diagnosis of RDD.
View Article and Find Full Text PDFmBio
September 2025
Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
Enteroinvasive bacterial pathogens are responsible for an enormous worldwide disease burden that critically affects the young and immunocompromised. is a gram-negative enteric pathogen closely related to the plague agent that colonizes intestinal tissues, induces the formation of pyogranulomas along the intestinal tract, and disseminates to systemic organs following oral infection of experimental rodents. Prior studies proposed that systemic tissues were colonized by a pool of intestinal replicating bacteria distinct from populations within Peyer's patches and mesenteric lymph nodes.
View Article and Find Full Text PDFClin Lab
September 2025
Background: Mantle cell lymphoma (MCL) is a subtype of non-Hodgkin lymphoma characterized by the proliferation of B-cells. Severe hyperleukocytosis is an uncommon presentation that can complicate the diagnosis and management of MCL.
Methods: We present the case of an 80-year-old male patient suffering from MCL, who exhibited symptoms including severe hyperleukocytosis, lymphadenopathy, and significant bone marrow infiltration.
Background: Kikuchi-Fujimoto disease (KFD) is a benign, self-limited, rare disease that rarely coexists with hemophagocytic lymphohistiocytosis (HLH).
Methods: We reported a case of a young female who presented with recurrent fever accompanied by painful lymphadenopathy, joint pain, and skin rash.
Results: Excisional biopsy of lymph node indicated KFD.
Anal Chem
September 2025
Department of Radiotherapy, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215123, People's Republic of China.
Radiation therapy (RT) plays important roles in cancer treatment, and the efficacy of RT depends on the abscopal effect, which results in the regression of distant and untreated tumors through localized irradiation of a single tumor lesion. This effect is mediated by effector tumor antigen-specific T cells (ETASTs) activated by RT. Monitoring the radiation-induced changes in ETASTs can be used to predict the abscopal effect.
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