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TFE3-rearranged perivascular epithelioid cell tumors of the head and neck with rare fusion partners: clues to the differential diagnosis between benign and malignant tumors.
Diagn Pathol
January 2025
Department of Diagnostic Pathology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan.
Background: Perivascular epithelioid cell tumors (PEComas) rarely appear in the head and neck region. This case report describes two transcription factor E3 (TFE3)-rearranged PEComa cases, consisting of one in the orbit and one in the nasal cavity.
Case Presentation: Both cases demonstrated sheet-like or focal nested architecture and comprised epithelioid cells with abundant clear to eosinophilic cytoplasm and vascular stroma.
A rare case of a malignant hepatic perivascular epithelioid cell tumor (PEComa) with aggressive progression following the relapse of renal pecoma despite everolimus therapy.
Clin J Gastroenterol
January 2025
Department of Gastroenterology and Hepatology, Osaka University Graduate School of Medicine, Suita, Japan.
A 55-year-old man with tuberous sclerosis complex (TSC) was diagnosed with left renal angiomyolipoma (AML), a group of perivascular epithelioid cell tumors called PEComas. He had received the mTOR inhibitor everolimus, which resulted in a complete response. However, a left renal mass relapsed in two years, followed by the occurrence of a hepatic mass five months later.
View Article and Find Full Text PDFHistiocytosis are caused by pathogenic myeloid cells, and can be classified as Langerhans cell histiocytosis (LCH) and non-LCH. Erdheim-Chester disease (ECD) is a non-LCH, characterized by multi-organ involvement, typical imaging findings, and confirmatory histological studies. A case with multi-organ involvement and histological confirmation is presented.
View Article and Find Full Text PDFIntroduction: Chronic kidney disease (CKD) and heart failure with preserved ejection fraction (HFpEF) are more prevalent in the elderly. There is a lack of large animal models that allow the study of the impact of age on CKD and HFpEF in a translational fashion. This manuscript reports the first large preclinical model of CKD-HFpEF and metabolic derangements in naturally aged swine.
View Article and Find Full Text PDFAssociations of renal sinus fat with metabolic parameters, abdominal visceral adipose tissue, metabolic syndrome, fructose intake, and blood pressure control in obese individuals with hypertension: a cross-sectional study.
J Nutr Sci
December 2024
Kidney Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
Renal sinus fat (RSF) crucially influences metabolic regulation, inflammation, and vascular function. We investigated the association between RSF accumulation, metabolic disorders, and nutritional status in obese individuals with hypertension. A cross-sectional study involved 51 obese hypertensive patients from Salamat Specialized Community Clinic (February-September 2022).
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