Estimated incidence rate and distribution of tumours in 4,653 cases of archival submissions derived from the Dutch golden retriever population

Table 1 Patients characteristics

	Cytological data-set	Histological data-set	Combined set (excluding 54 double entries)
Number of tumours	2,529	2,124	4,599
• Mean/year	361	303	657
• Nr of dogs in which a second tumour was detected	69	46	115
• Nr of dogs in which a third tumour was detected	0	24	24
Male/male neutered	795/365	719/320
Female/female neutered	530/649	413/600
Median age	9.1 yrs	8.6 yrs
Median age	(min. 0.2 yrs, max.17.2 yrs)	(min. 0.1 yrs, max.17.2 yrs)
Number of malignant tumours	1,203 (48%)	1,262 (60%)	2,414
Number of benign tumours	1,010 (40%)	761 (36%)	1,768
Unknown	316 (12%)	101 (5%)	417

ISSN: 1746-6148