PMID- 7856666 OWN - NLM STAT- MEDLINE DCOM- 19950310 LR - 20111117 IS - 0148-7299 (Print) IS - 0148-7299 (Linking) VI - 53 IP - 3 DP - 1994 Nov 15 TI - 18q- and 18q+ mosaicism in a mentally retarded boy. PG - 296-9 AB - A mentally retarded boy was found to have an unusual chromosomal mosaicism [46,XY, del(18) (q22)/46,XY,iso psu dic(18)(q23)]. The clinical manifestations are compatible with the 18q- syndrome. The chromosome alteration was defined by high resolution banding and fluorescence in situ hybridization (FISH). A mechanism to explain the origin of the two cell lines is presented and discussed. FAU - Ausems, M G AU - Ausems MG AD - Clinical Genetics Center Utrecht, The Netherlands. FAU - Bhola, S L AU - Bhola SL FAU - Post-Blok, C A AU - Post-Blok CA FAU - Hennekam, R C AU - Hennekam RC FAU - de France, H F AU - de France HF LA - eng PT - Case Reports PT - Journal Article PL - United States TA - Am J Med Genet JT - American journal of medical genetics JID - 7708900 SB - IM MH - Abnormalities, Multiple/genetics MH - Child, Preschool MH - Chromosome Aberrations/*genetics MH - Chromosome Banding MH - Chromosome Deletion MH - Chromosome Disorders MH - *Chromosomes, Human, Pair 18 MH - Dwarfism/genetics MH - Humans MH - In Situ Hybridization, Fluorescence MH - Intellectual Disability/*genetics MH - Karyotyping MH - Male MH - *Mosaicism MH - Respiratory Tract Infections/genetics MH - Sister Chromatid Exchange EDAT- 1994/11/15 00:00 MHDA- 1994/11/15 00:01 CRDT- 1994/11/15 00:00 PHST- 1994/11/15 00:00 [pubmed] PHST- 1994/11/15 00:01 [medline] PHST- 1994/11/15 00:00 [entrez] AID - 10.1002/ajmg.1320530317 [doi] PST - ppublish SO - Am J Med Genet. 1994 Nov 15;53(3):296-9. doi: 10.1002/ajmg.1320530317.