[A case of partial 1p36.1 deletion and partial trisomy 6p diagnosed by karyotype].
The deletion of chromosomal region 1p36 is one of the most common sub-telomeric microdeletion syndromes and has distinctive dysmorphic features. On the other hand, partial trisomy of the short arm of chromosome 6 is a rare chromosomal abnormality with a variable phenotype.


OBJECTIVE
To report a case with both chromosome abnormalities, and to highlight the importance of the karyotype as a diagnostic tool in dysmorphology.


METHODS
The case of is presented of a two month-old infant with several craniofacial anomalies, neck haemangioma, sacral pit, rhizomelic shortening, small hands and feet, left unilateral cryptorchidism, and hypotonia. The infant also suffered intrauterine growth restriction and is the product of the eighth pregnancy of a 28 years old woman. Due to the unspecific findings in phenotype, a karyotype was requested, which showed a partial deletion of 1p36.1 and a partial trisomy of chromosome 6.


CONCLUSIONS
The development of new techniques in molecular biology has improved diagnostic possibilities in medical genetics. However, the traditional karyotype remains as an important diagnostic tool in patients with multiple congenital anomalies.
Estudiante de Pregrado, Escuela de Medicina, Universidad del Valle, Cali, Colombia.
Monica
M
Fernández Pineda
Profesor, Departamento de Morfología, Escuela de Ciencias Básicas Médicas, Universidad del Valle, Cali, Colombia. Electronic address: juracheyne@gmail.com.
Julián
J
Ramírez-Cheyne
Profesor, Departamento de Morfología, Escuela de Ciencias Básicas Médicas, Universidad del Valle, Cali, Colombia.
Carolina
C
Isaza
Profesor, Departamento de Morfología, Escuela de Ciencias Básicas Médicas, Universidad del Valle, Cali, Colombia; Gineco Obstetra, Hospital Universitario del Valle, Cali, Colombia.
Wilmar
W
Saldarriaga
D000015:Abnormalities, Multiple / Q000235:genetics* / Q000503:physiopathology; D000328:Adult; D002872:Chromosome Deletion; D002896:Chromosomes, Human, Pair 6; D005260:Female; D005317:Fetal Growth Retardation / Q000235:genetics; D006801:Humans; D007223:Infant; D007621:Karyotyping / Q000379:methods*; D008297:Male; D010641:Phenotype; D011247:Pregnancy; D014314:Trisomy / Q000175:diagnosis*
Aberraciones cromosómicas; Anomalías congénitas; Chromosome 1; Chromosome 6; Chromosome disorders; Citogenética; Congenital abnormalities; Cromosomas humanos par 1; Cromosomas humanos par 6; Cytogenetics