• A patient with trisomy X had concurrent pinealoma and bilateral retinoblastoma. Karyotyping, preferably with highresolution banding, should be performed on all patients with retinoblastoma to look for 13q-deletions and to evaluate the possible association between retinoblastoma and aneuploidy.
Judisch GF, Patil SR. Concurrent Heritable Retinoblastoma, Pinealoma, and Trisomy X. Arch Ophthalmol. 1981;99(10):1767–1769. doi:10.1001/archopht.1981.03930020641004
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