Clinical Study

Small-Area Analysis of Incidence and Localisation of Vulvar Cancer

Table 1

Data of 104 patients with vulvar cancer treated between 1994 and 2008. Figures give number of patients unless noted otherwise.

Cohort-1 (1994–1998)Cohort-2 (1999–2003)Cohort-3 (2004–2008)

Number112172
Mean age [years]73.1858.9061.19 𝑃 = . 0 4 7 a
95% CI [years]64.04; 82.3352.24; 65.5757.27; 65.12
Age < 50 years1720 𝑃 = . 0 4 8 b
Comorbidities: no1313
Tobacco abuse: yes21025n.s. c

Histology
 Squamous cell101763n.s. b
 Nonsqamous cell14
 Verrucous111
 Adenocarcinoma2
 Other22

FIGO
 I2430n.s. b
 II4414
 III135
 IV37
 X4716

Grading
 G1356n.s. b
 G281357
 G36
 G41
 GX31

Depth [mm] mean +/− SD5.7 (2.1)3.7 (4.9)5.3 (5.4)n.s. a

VIN surrounding invasive cancer [%]9.142.841.7 𝑃 = . 0 3 c
𝑃 = . 0 5 c

History of lichen sclerosus or carcinoma-in-situ [%]45.533.320.8n.s. c

Unifocal lesion1735 𝑃 = . 0 2 c

ASAn.s. b
 11115
 211128
 33727
 4011
 x611

Surgery 𝑃 = . 0 1 5 c
 Biopsy only2 𝑃 = . 0 3 c
 Wide excision or partial vulvectomy51159
 Radical vulvectomy6813

Adjuvant radiation: yes1514n.s. c

Alive (May 2009)
 Yes62072
 No1
 Not known5

CI = confidence interval. ASA = American Society of Anesthesiologists' Physical Status Classification. LNE = inguinal lymphadenectomy. SD = standard deviation. a ANOVA (post-hoc comparisons with Games-Howell). b Kruskal-Wallis test. c Fisher’s exact test. Cohort-3 versus cohort-1. Cohort-2 versus cohort-1. Cohort-2 versus cohort-3.