Herniography in the diagnosis of obscure groin pain.

Obscure groin pain was investigated in 250 consecutive patients (including 171 males) with no palpable hernia or previous hernia operation. Herniography revealed nonpalpable but symptomatic hernia in 51% of the male and 21% of the female patients. Among the hernia patients with bilateral pain, 40% had unilateral hernia. Direct-type hernia was most commonly found. Of the surgically treated patients, 87% were free from groin pain postoperatively. Further clinical investigations with a broad diagnostic approach gave a treatable diagnosis in 70% of the patients without hernia surgery. Spontaneous improvement occurred during the investigation in 25%, and the cause of groin pain remained unclear in 5% of the patients. Herniography is a valuable diagnostic tool in obscure groin pain and its use is justified at an early stage of investigation. "Blind" exploration can thus be avoided.