Four phases of checks for exclusion of umbilical cord blood donors.

Aim: The aim of this study was to analyse umbilical cord blood (UCB) collection over 1 year between October 2008 and September 2009, seeking ways to improve the number of suitable banked UCB units. Four phases of the process were investigated, from the consent form to the banking procedure, paying attention to the discarded UCB units.

Material And Methods: We recruited couples at 35 weeks of gestation and took an accurate history, focusing on genetic, immunological and infectious diseases.

Prenatal diagnosis of chromosome 4 mosaicism: prognostic role of cytogenetic, molecular, and ultrasound/MRI characterization.

Trisomy 4 mosaicism is extremely rare: herein we report the cytogenetic and molecular characterization and prenatal US findings of a case diagnosed prenatally. The diagnosis of level III mosaicism was established in cultured amniotic fluid cells (22.5%).