Isolated isochromosome (17q) is reported in patients with myelodysplastic syndrome (MDS)/myeloproliferative disorders. It is a poor prognostic marker. We report clinicopathologic feature of a 26-year-old male a civil engineer with MDS and secondary fibrosis and isochromosomy of 17(q10). He had a history of working in gold mine and an accessory testis in a physical examination.
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