Loss of chromosome 22 identifies high risk Wilms tumors. The prognostic significance of 1q gain, 16q loss and unbalanced translocation der(16)t(1q;16q) is unresolved and warrants further investigation.
BMN is a rare clinicopathologic entity separate from AVN and has a distinctive MRI appearance. As MRI comes to play an increasingly important role in the evaluation of bone marrow disease, BMN is likely to be more frequently encountered. Awareness of BMN and its MRI appearance and appreciation of the frequent association between BMN and underlying malignancy may assist in the early diagnosis of BMN and initiate an intensive search for occult malignancy.
The outcome for stage III FH disease was similar to that reported for UKWT1 and NWTS-3. The combination of abdominal RT together with 3-drug chemotherapy achieves a high abdominal tumour control rate. Flank RT is probably sufficient for localised tumour rupture. The high cure rates for children in this trial with 'inoperable disease' suggests that treatment should be modified according to their post-chemotherapy stage in order to avoid over-treatment. The high OS for stage III CCSK on this protocol suggests that treatment duration could be curtailed and the role of RT reviewed, though the numbers are small. The prognosis for older children with RTK seems to be better than for younger children although larger studies are required to confirm this.
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