blastoma

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blastoma

[‚bla′stōm·ə]
(medicine)
A tumor whose parenchymal cells have certain embryonal characteristics.
A true tumor.
References in periodicals archive ?
Some current concepts on the pathology of amelo- blastomas.
Es importante hacer el diagnostico diferencial entre el adenocarcinoma fetal bien diferenciado y el blastoma bifasico pulmonar, porque la supervivencia a 5 anos es de 80 y 30%, respectivamente.
20) Pulmonary sarcomas can be generally grouped into 4 categories: (1) spindle cell sarcomas, including SS, malignant peripheral nerve sheath tumor, leiomyosarcoma, inflammatory myofibroblastic tumor, solitary fibrous tumor, and undifferentiated pleomorphic sarcoma; (2) vascular tumors, including angiosarcoma, Kaposi sarcoma, epithelioid hemangioendothelioma, and pulmonary artery intima sarcoma; (3) primitive/embryonal tumors, including primary pleuropulmonary blastoma, primary NET, and rhabdomyosarcoma; and (4) others, including primary pulmonary myxoid sarcoma, angiomatoid fibrous histiocytoma, and alveolar soft part sarcoma.
Aberrant nuclear/cytoplasmic localization and gene mutation of beta-catenin in classic pulmonary blastoma: beta-catenin immunostaining is useful for distinguishing between classic pulmonary blastoma and a blastomatoid variant of carcinosarcoma.
It has been proposed that gastroblastoma may relate better to the spindle epithelial tumor with thymuslike differentiation and the desmoplastic nested spindle cell tumor of liver rather than blastomas.
Pulmonary blastomas are the rarest of the sarcomatoid carcinomas, accounting for 0.
They include adenosarcoma, carcinosarcoma, malignant mixed mullerian tumor, pulmonary blastomas, and biphasic mesotheliomas.
2) SNUC can be considered as part of a spectrum of neuroendocrine-type tumors of the sinonasal cavity, ranging from the highly differentiated esthesioneuro blastoma to the poorly differentiated and questionably neuroendocrine SNUC.
Recent WHO 2002 classification removed WDFA tumours from the pulmonary blastoma category and classified them as a variant of adenocarcinoma (11).
Nephro means kidney, and a blastoma is a tumour of embryonic tissue that has not yet fully developed.
Neoplastic lesions included neurofibromas (2), ganglioneuroma (1), lymphoma (1), pulmonary blastoma (1) (Fig.
65,66) An additional consideration for the Sertoli cell nodules that have been colonized by IGCNU is gonado blastoma, especially when there is matrix calcification.