Eble JN, Sauter G., Epstein JI, Sesterhenn IA - iarc
Eble JN, Sauter G., Epstein JI, Sesterhenn IA - iarc
Eble JN, Sauter G., Epstein JI, Sesterhenn IA - iarc
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Infiltrating urothelial carcinoma<br />
A. Lopez-Beltran<br />
G. <strong>Sauter</strong><br />
T. Gasser<br />
A. Hartmann<br />
B.J. Schmitz-Dräger<br />
B. Helpap<br />
A.G. Ayala<br />
P. Tamboli<br />
M.A. Knowles<br />
D. Sidransky<br />
C. Cordon-Cardo<br />
P.A. Jones<br />
P. Cairns<br />
R. Simon<br />
M.B. Amin<br />
J.E. Tyczynski<br />
Definition<br />
Infiltrating urothelial carcinoma is defined<br />
as a urothelial tumour that invades<br />
beyond the basement membrane.<br />
ICD-O code 8120/3<br />
Synonym<br />
Transitional cell carcinoma.<br />
Epidemiology of urothelial<br />
bladder cancer<br />
Bladder cancer is the 7th most common<br />
cancer worldwide, with an estimated<br />
260,000 new cases occurring each year<br />
in men and 76,000 in women {749}.<br />
Cancer of the urinary bladder accounts<br />
for about 3.2% of all cancers worldwide<br />
and is considerably more common in<br />
males than in females (ratio worldwide is<br />
about 3.5:1) {2014}. In both sexes, the<br />
highest incidence rates of bladder cancer<br />
are observed in Western Europe,<br />
North America and Australia {2016}.<br />
The highest incidence rates of bladder<br />
cancer in males in 1990s were observed<br />
in the following registries: Limburg<br />
(Belgium) – 42.5/105, Genoa Province<br />
(Italy) – 41.1/105, and Mallorca (Spain) –<br />
39.5/105 {2016}. The highest rates in<br />
females were noted in Harare<br />
(Zimbabwe) – 8.3/105, Scotland (UK) –<br />
8.1/105, North Western England (UK) –<br />
8.0/105, and white population of<br />
Connecticut (USA) – 8.0/105. The highest<br />
prevalence of bladder cancers in<br />
both males and females is observed in<br />
North America and in countries of the<br />
European Union {2084}. In general, the<br />
prevalence of bladder tumours in developed<br />
countries in approximately 6-times<br />
higher compared with that in developing<br />
countires.<br />
The most common type of bladder cancer<br />
in developed countries is urothelial<br />
carcinoma, derived from the uroepithelium,<br />
which constitutes more than 90% of<br />
bladder cancer cases in USA, France or<br />
Italy. However, in other regions (e.g.<br />
Eastern and Northern Europe, Africa,<br />
Asia) the relative frequency of urothelial<br />
carcinoma of the bladder is lower. In general,<br />
among all registries included into<br />
the 8th volume of "Cancer Incidence in<br />
Five Continents" {2016} urothelial carcinoma<br />
constitutes 84% of bladder cancer<br />
in males and 79% in females. Other<br />
types of bladder cancer, i.e. squamous<br />
cell carcinoma and adenocarcinoma<br />
have much lower relative frequency. In all<br />
"Cancer Incidence in Five Continents"<br />
{2016} registries squamous cell carcinoma<br />
accounts for 1.1% and 2.8% of all<br />
bladder cancers in men and women<br />
respectively. Adenocarcinoma of the<br />
bladder constitutes respectively 1.5%<br />
and 1.9% of all bladder tumours worldwide<br />
{2016}. It is estimated that approximately<br />
70-80% of patients with newly<br />
diagnosed bladder cancer present with<br />
non-invasive or early invasive (i.e. stage<br />
Ta, Tis, or T1).<br />
Etiology of urothelial bladder<br />
cancer<br />
Risk factors<br />
There are several known and potential<br />
risk factors of bladder cancer. Cigarette<br />
smoking and occupational exposure to<br />
aromatic amines are the most important<br />
among them {1877}.<br />
Tobacco smoking<br />
Tobacco smoking is the major established<br />
risk factor of bladder cancer. It is<br />
estimated that the risk of bladder cancer<br />
attributed to tobacco smoking is 66% for<br />
men and 30% for women {1158}.<br />
The risk of bladder cancer in smokers is<br />
2-6 fold that of non-smokers {313,391,<br />
1877}. The risk increases with increasing<br />
duration of smoking, and for those with<br />
the longest history of smoking (60 years<br />
or more) reaches approximately 6 in men<br />
and 5 in women {313}. The excess of risk<br />
is observed also with increasing intensity<br />
of smoking (number of cigarettes per<br />
day), reaching maximum of about 3 for<br />
those smoking 40 or more cigarettes per<br />
day {313}. The increase of risk with the<br />
increasing duration and intensity of<br />
smoking is similar in both sexes {1158}<br />
but, some studies indicate higher risk in<br />
women than in men at the equivalent<br />
level of exposure {391}.<br />
Fig. 2.01 Estimates of the age-standardized incidence rates of bladder cancer in males, adjusted to the<br />
world standard age distribution (ASR). From Globocan 2000 {749}.<br />
Infiltrating urothelial carcinoma<br />
93