The simple technique of rectal mucosal biopsy for the diagnosis of Hirschsprung's disease.

The new simple technique of rectal mucosal punch biopsy has been used successfully in 170 cases for diagnosing Hirschsprung's disease. The presented punch biopsy method, using a test tube with a side hole and laryngeal biopsy forceps, has proven to be superior to the rectal suction biopsy method associated with several demerits.