Chromosome changes in a squamous cell carcinoma of the vagina

The findings on direct chromosome preparations of a moderately differentiated squamous cell carcinoma of the vagina are described. Most counts were in the range 82-86. Eight markers were present in at least five of six metaphases karyotyped: 3p- (1-2 copies); i(5p) or possibly 5q- (2-3 copies); i(8q) (2 copies); 11q- (2-4 copies); 15p+ (1-2 copies), a probable 18q- (1 copy), 22p+ (1 copy), and minute acrocentric (2-4 copies). Numerical changes included extra copies of chromosomes 7 and 13, but only one copy of chromosome 11 was present.