ArticleVirchows Archiv : an international journal of pathology2026
The indolent nature of gastroblastoma. Report of an illustrative case with 28 years of follow-up showing previously unreported immunohistochemical and molecular features.
Article in Virchows Archiv : an international journal of pathology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
We report the clinical, morphological, ultrastructural, and molecular features of a gastroblastoma diagnosed in a 27-year-old male describing some unreported findings that can help to better understand this very rare tumor. The clinical course lasting 28 years confirms the indolent nature of gastroblastoma, although the disease was metastatic to local lymph nodes and peritoneum at the time of diagnosis. The tumor displayed a predominant monophasic appearance, being composed of epithelial cells with only very rare spindle mesenchymal cells, confirmed at ultrastructural examination. Thorough immunohistochemical investigation demonstrated coexpression of cytokeratins (AE1/AE3, CAM5.2, CK8/18), podoplanin (D2-40), CD56, and NSE in absence of synaptophysin, chromogranin A, DOG1, CD117, CD34, SMA, desmin, vimentin, and S100. In addition, the expression of somatostatin receptor 2 A associated with positive octreoscan and
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