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Extramedullary 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.
Introduction: Thyroid and salivary gland cytopathology frequently present diagnostic challenges due to complex presentations, overlapping features between benign and malignant conditions, particularly with grey-zone entities and rare pathologies. To address these issues, the 45th European Congress of Cytology (ECC) held a slide seminar focused on challenging cases. This article reviews key findings from the six cases discussed, emphasizing the importance of a comprehensive diagnostic approach.
View Article and Find Full Text PDFMetastatic 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.
View Article and Find Full Text PDFCerebrospinal Fluid Cytology in Lyme Neuroborreliosis Revisited-Role of Neutrophilic Granulocytes: A Retrospective Single-Center Study.
J Clin Med
December 2024
Department of Neurology, Christian-Doppler University Hospital, Paracelsus Medical University, Centre for Cognitive Neuroscience, Ignaz Harrer Str. 79, 5020 Salzburg, Austria.
: diagnosis of Lyme neuroborreliosis (LNB) relies on medical history, clinical findings, and detection of pathogen-specific antibodies in the blood and cerebrospinal fluid (CSF). The chemoattractant CXCL13 serves as an additional marker for LNB acuity. During the diagnostic workup, cytomorphological examination of immune cells in CSF provides early insights.
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