Radiation-induced sarcomas (RIS) are a rare long-term complication of radiation therapy, with a reported incidence of 2.5-5.5%. They usually develop several years following exposure to radiotherapy. The most common reported subtypes are undifferentiated pleomorphic sarcoma, angiosarcoma, and leiomyosarcoma. Breast cancer is the most common primary malignancy preceding RIS, followed by uterine cervical carcinoma. Only a few cases of RIS with rhabdomyoblastic differentiation have been reported in the literature, usually following the treatment of retinoblastoma. Herein, we report a rare case of RIS with rhabdomyoblastic differentiation in the pelvic region developing 12 years after cervical cancer radiation therapy.
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http://dx.doi.org/10.7759/cureus.15428 | DOI Listing |
Am J Dermatopathol
December 2024
Department of Pathology, Rutgers University New Jersey Medical School, Newark, NJ; and.
Malignant phyllodes tumor (PT) of the breast is a rare fibroepithelial neoplasm that shows variegated histomorphology and an aggressive clinical course. Cutaneous metastases are rare. A 68 year old woman presented with a palpable left breast mass identified on a routine breast exam.
View Article and Find Full Text PDFZhonghua Bing Li Xue Za Zhi
December 2024
Department of Pathology, Sun Yat-sen University Cancer Center, Guangzhou510060, China.
To investigate the clinicopathological features, immunophenotype, molecular characteristics, and differential diagnosis of primary intracranial DICER1-mutant sarcoma in order to better understand this tumor type. A retrospective analysis was conducted on 7 cases of primary intracranial DICER1-mutant sarcoma diagnosed in the Department of Pathology, Sun Yat-sen University Cancer Center, Guangzhou, China between 2021 and 2023 using next-generation sequencing. At the same time, 10 gliosarcomas, 4 intracranial FET::CREB fusion-positive mesenchymal tumors, 4 malignant meningiomas, 3 malignant solitary fibrous tumors, 3 malignant peripheral nerve sheath tumors, 3 synovial sarcomas and 3 rhabdomyosarcomas (total 30 cases) were selected as control.
View Article and Find Full Text PDFIn Vivo
October 2024
Department of Pathology, Osaka Metropolitan University Graduate School of Medicine, Osaka, Japan.
Virchows Arch
December 2024
Department of Pathology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA.
Pseudomyogenic hemangioendothelioma (PHE) is a rare, usually multifocal neoplasm typically affecting individuals in the second-to-fourth decade of life, with a male predominance. It often arises in the distal extremities and characteristically involves multiple tissue planes. Presentation of this neoplasm as a primary penile lesion is exceedingly rare, with only five cases previously documented in the literature.
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