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Cytologic diagnosis of fumarate hydratase-deficient renal cell carcinoma: A single-institutional experience.
Cancer Cytopathol
February 2025
Department of Pathology, Stanford University School of Medicine, Stanford, California, USA.
Background: Fumarate hydratase-deficient renal cell carcinoma (FHRCC) is an aggressive carcinoma that typically presents as advanced-stage disease. Prompt recognition of FHRCC is critical for appropriate clinical care and genetic counseling for patients and family members. However, diagnosing FHRCC from cytology specimens is challenging, with limited characterization and no reports describing prospectively identified cases.
View Article and Find Full Text PDFExtramedullary Hematopoiesis in Serous Cavity Fluids: A Closer Look at This Rare Phenomenon With Diagnostic Pitfalls and Prognostic Significance.
Diagn Cytopathol
December 2024
Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.
Background: Extramedullary hematopoiesis (EMH) is usually seen in the reticuloendothelial system such as the spleen and liver; however, there have been rare case reports when EMH is seen in serous fluids (SFs). The aim of this study included analyzing the cytomorphological features of EMH in SFs in correlation with various clinicopathologic parameters and recognizing potential diagnostic pitfalls as well as their prognostic significance.
Methods: Clinicopathologic parameters and radiologic and pathologic information from the patients with a cytologic diagnosis of EMH were evaluated with cytology slides.
Article Synopsis
- Thyroid and salivary gland cytopathology often present diagnostic challenges due to overlapping features and rare conditions, prompting a focused seminar at the 45th European Congress of Cytology to address these issues.
- The seminar showcased complex cases using fine-needle aspiration cytology (FNAC) alongside histopathological and molecular analyses to differentiate between benign and malignant lesions.
- The findings emphasize the necessity of a comprehensive, multidisciplinary diagnostic approach that integrates cytological, clinical, and histopathological data for accurate patient management.
Metastatic Malignant Granular Cell Tumor in the Lymph Node: A Cytological Report With Immunocytochemical Analysis.
Diagn Cytopathol
December 2024
Department of Pathology and Division of Diagnostic Pathology, Osaka Medical and Pharmaceutical University, Osaka, Japan.
Granular cell tumors (GCTs) are relatively rare, whereas malignant GCTs are extremely rare. This brief report describes a cytological case of metastatic malignant GCT in the lymph node with immunocytochemical analysis. A 77 years old Japanese female with a history of surgical resection for malignant GCT in the back 8 years earlier presented with swelling of the right neck.
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.
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