98%
921
2 minutes
20
Mantle cell lymphoma (MCL) is a mature B-cell lymphoma associated with cyclin D family rearrangements and typically expresses CD5 and cyclin D1. Epstein-Barr virus- (EBV-) positive MCL is rare, and the role of EBV infection and its transformation in MCL remains unclear. We present a case of CD5-negative classic MCL that progressed to an EBV + pleomorphic MCL six years after the initial diagnosis. Molecular studies confirmed the same clonal origin. To the best of our knowledge, the EBV-positive transformation of CD5-negative MCL into a pleomorphic variant has rarely been reported, and its recognition is important for the diagnosis and the management of patients with MCL.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11208810 | PMC |
http://dx.doi.org/10.1155/2024/3267739 | DOI Listing |
Int J Mol Sci
August 2025
Department of Human Pathology, Juntendo University School of Medicine, Tokyo 113-8421, Japan.
High-grade sarcomas often lack typical morphological features and exhibit no clear differentiation, often leading to a diagnosis of undifferentiated sarcoma (US). Pleomorphic leiomyosarcoma (PLMS) is a high-grade sarcoma consisting of a typical leiomyosarcoma (LMS) component alongside dedifferentiated high-grade areas. A few decades ago, PLMS was regarded as a subtype of high-grade sarcoma previously referred to as malignant fibrous histiocytoma; it is now classified as a variant of LMS.
View Article and Find Full Text PDFFront Immunol
August 2025
Department of Pathology, Shenzhen Third People's Hospital (The Second Affiliated Hospital of Southern University of Science and Technology), Shenzhen, Guangdong, China.
Background: Pleomorphic giant cell adenocarcinoma (PGCA) of the prostate is a rare, aggressive variant characterized by multinucleated giant cells, sarcomatoid features, and resistance to conventional therapies. Despite its recognition in the WHO 2016 guidelines, the molecular drivers and clinicopathological correlates of PGCA remain poorly characterized. This study presents the first integrative clinicogenomic profiling of PGCA, revealing a novel prognostic gene signature with direct implications for diagnosis and treatment.
View Article and Find Full Text PDFIndian J Thorac Cardiovasc Surg
September 2025
Department of Pathology, Rajiv Gandhi Cancer Institute and Research Centre, New Delhi, 110085 India.
Pulmonary pleomorphic carcinoma (PPC) is a rare, highly aggressive variant of non-small cell lung cancer (NSCLC), comprising 0.1-0.4% of all pulmonary malignancies.
View Article and Find Full Text PDFWorld J Oncol
August 2025
Department of Pathology and Laboratory Medicine, King Hussein Cancer Center, Amman, Jordan.
Background: Invasive lobular carcinoma (ILC) accounts for approximately 10% of invasive breast carcinomas and is the most common special subtype. Most ILCs express estrogen receptors (ERs) and progesterone receptors (PRs) but typically lack ERBB2 (human epidermal growth factor receptor 2 (HER2)) overexpression. HER2-positive ILC is rare, understudied, and often linked to aggressive clinical and histopathologic features.
View Article and Find Full Text PDFIndian J Otolaryngol Head Neck Surg
August 2025
Department of Pathology & Laboratory Medicine, All India Institute of Medical Sciences (AIIMS), Room no. C-2, Level-3, Rishikesh, 249201 Uttarakhand India.
Background: Anaplastic thyroid carcinoma (ATC) is a rare, undifferentiated thyroid malignancy with a poor prognosis and rapid clinical progression. It accounts for less than 10% of thyroid cancers but contributes disproportionately to thyroid cancer-related mortality. Histologically, ATC exhibits significant pleomorphism and can present with diverse morphological patterns, often coexisting with differentiated thyroid carcinoma.
View Article and Find Full Text PDF