An X/Y translocation associated with Leri-Weill dyschondrosteosis (LWD) was
detected in a boy and in his mother. FISH analysis with specific probes fo
r SHOX and SRY displayed no signal on the der(X), while one signal for SHOX
was detected on the normal X chromosome in the mother, and one signal each
for SHOX and SRY was detected on the normal Y chromosome in the proband.