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Primary rhabdomyosarcoma: An extremely rare and aggressive variant of male breast cancer

World Journal of Clinical Cases 2020年第19期8卷 4466-4474页

作者： Catalin Bogdan Satala Ioan Jung Tivadar Jr Bara Patricia simu iunius simu Madalina Vlad Rita Szodorai Simona Gurzu Department of Pathology Clinical County Emergency HospitalTirgu Mures 540139Romania Department of Pathology George Emil Palade University of MedicinePharmacySciences and TechnologyTargu Mures 530149Romania Department of Surgery Clinical County Emergency HospitalTargu Mures 540136Romania Department of Radiology George Emil Palade University of MedicinePharmacySciences and TechnologyTargu Mures 530149Romania Department of Pathology Clinical County Emergency HospitalTargu Mures 540136Romania Department of Pathology George Emil Palade University of MedicinePharmacyScience and TechnologyTargu Mures 530149Romania Research Center(CCAMF) University of MedicinePharmacySciences and TechnologyTargu Mures 540139Romania

BACKGROUND Rhabdomyosarcoma(RMS)of the breast,a mesenchymal neoplasm with skeletal muscle differentiation,is an extremely rare tumour in males,with less than 30 cases published in English-language *** report on the first case of a male breast RMS,with an unusual ectomesenchymal/neuroectodermal *** SUMMARY A 55-year-old,previously healthy male,underwent a radical left mastectomy for an ulcerated tumour mass,occupying the breast and left anterior thoracic *** biopsy specimen indicated the presence of a tumour with neural origins,namely a peripheral neuroectodermal tumour(PNET).The surgical specimens identified two *** rhabdomyosarcomatous component(over 70%)was represented by large pleomorphic cells with positivity for desmin,sarcomeric actin and *** PNET-like ectomesenchymal component,which was admixed with the RMS cells,and was also revealed during the preoperative biopsy,consisted of small cells which expressed neurofilament,neuron specific enolase and *** microscopic examination,along with the immunohistochemical profile,allowed the diagnosis of an RMS,with unusual ectomesenchymal *** patient refused the postoperative oncologic therapy and died three months after *** In patients with RMS of the breast,the PNET-like ectomesenchymal component increases the diagnosis difficulty,especially in biopsy *** differentiation can be immunohistochemically proven and might highlight the possible development of high-grade sarcoma of the breast from remnants of the embryological ectodermal layer.

关键词： Mammary gland Rhabdomyosarcoma Ectomesenchymoma Male Case report CD99

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