Inguinal hernia is not a sign of colon cancer: results of a prospective screening trial.
BACKGROUND
It has been suggested that patients with an inguinal hernia harbour an increased risk for colorectal cancer.


METHODS
In a prospective clinical trial, we compared the prevalence of colonic neoplasms in 100 cases with inguinal hernia and 100 controls without inguinal hernia. The number, size, histology type, and the location of all colorectal lesions found during a screening flexible sigmoidoscopy were recorded.


RESULTS
Not a single case of colorectal cancer was detected in the patients with inguinal hernia pending surgical repair. In the asymptomatic control subjects, one Dukes A and one Dukes B1 colon cancer were detected. Polypectomy was performed in 15% and 17% of the case and control subjects, respectively. During a 5-year period following the initial screening procedure, none of the case or control subjects was diagnosed with colon cancer.


CONCLUSIONS
The decision for or against performing an endoscopic procedure in a patient with inguinal hernia should be guided by the general principles of screening for colorectal cancer. The mere presence of an inguinal hernia does not automatically increase the risk of colorectal cancer.
Avidan
B
B
Gastroenterology Section, Department of Veterans Affairs Medical Center 111F, 1501 San Pedro Drive SE, Albuquerque, NM 87108, USA.
Sonnenberg
A
A
Bhatia
H
H
Aranha
G
G
Schnell
T G
TG
Sontag
S J
SJ
D000236:Adenoma / Q000453:epidemiology / Q000209:etiology*; D000368:Aged; D002277:Carcinoma / Q000453:epidemiology / Q000209:etiology*; D016022:Case-Control Studies; D003110:Colonic Neoplasms / Q000453:epidemiology / Q000209:etiology*; D003111:Colonic Polyps; D005260:Female; D006552:Hernia, Inguinal / Q000150:complications*; D006801:Humans; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D015995:Prevalence; D011446:Prospective Studies; D012307:Risk Factors