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Unclassifiable Renal Cell Carcinoma With an Estimated 100% Sarcomatoid Component: A Case Report.
Cureus
December 2024
Department of Anatomopathology, Mohammed VI University Hospital/Faculty of Medicine, Mohammed 1st University, Oujda, MAR.
Sarcomatoid renal cell carcinoma (RCC) is an aggressive tumour with a poor prognosis. It is not a distinct histological entity, as it can be found in any subtype of renal cell carcinoma. The majority of cases will present with advanced or metastatic disease requiring systemic treatment.
View Article and Find Full Text PDFCutaneous Metastasis of Bladder Cancer: A Systematic Review.
Cureus
November 2024
Department of Obstetrics and Gynecology, Beaumont Hospital, Dearborn, USA.
Bladder cancer is one of the main causes of urogenital cancer (30-35% of the total urological cancers). Although metastases from urologic tumors are rare, it is associated with a high mortality rate. The location and pattern of metastasis are random and unpredictable.
View Article and Find Full Text PDFCase 332: Tyrosine Kinase Inhibitor-induced Intestinal Lymphangiectasia.
Radiology
December 2024
From the Department of Radiology, Mayo Clinic Arizona, 5777 E Mayo Blvd, Phoenix, AZ 85054.
History A 65-year-old male patient with a history of sarcomatoid renal cell carcinoma and prior right nephrectomy developed recurrent disease adjacent to the inferior vena cava. The patient underwent surveillance imaging 7 months after initiation of treatment with maximum-dose pazopanib and less than 1 month after completing a 2-month regimen of palliative stereotactic body radiation therapy to the right nephrectomy bed and site of recurrence. (Stereotactic body radiation therapy was initiated 5 months after pazopanib treatment was initiated.
View Article and Find Full Text PDFPrimary tumor characteristics and immunohistochemical profile of renal cell carcinoma in serous fluid cytology.
J Am Soc Cytopathol
November 2024
Cytopathology Center of Excellence, Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.
Introduction: Renal cell carcinoma (RCC) involves serosal surfaces in 2%-3% of cases, and thus few papers describe serous fluid cytology (SFC) involvement by RCC. This diagnosis is challenging, given its rarity, nondescript cytomorphologic features and infrequent expression of widely used epithelial markers MOC31 and BerEP4. We describe our institutional experience with RCC in SFC specimens.
View Article and Find Full Text PDFCorrelation of histological immunophenotype in papillary renal cell carcinoma with gene signatures related to the therapeutic effect of systemic therapy.
Pathol Res Pract
December 2024
Department of Pathology, Graduate School of Medicine, Osaka Metropolitan University, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan.
To predict the therapeutic response of systemic therapy, comprehensive analyses of the tumor microenvironment in papillary renal cell carcinoma (pRCC) have been conducted previously using immunohistochemistry and RNA sequencing. This study aimed to evaluate the correlation between hematoxylin and eosin-based histological immunophenotypes and gene signatures employed in several clinical trials predicting responsiveness to immune checkpoint inhibitors and tyrosine kinase inhibitors, using data from the Cancer Genome Atlas (TCGA)-KIRP cohort (n = 254). Herein, we evaluated tumor-associated immune cells (TAICs) using three methodologies previously reported in clear cell RCC: a 3-tier immunophenotype (desert, excluded, and inflamed) based on the spatial distribution of TAICs; a 4-tier immunophenotype (cold, immune-low, excluded, and hot) considering both the location and degree of TAICs; and an inflammation score (score 0, 1, and 2) focusing only on the degree of TAICs.
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