[Value of the biopsy of accessory salivary glands in amyloidosis]

Abstract

Purpose: To assess the value of accessory salivary gland biopsy for the diagnosis of amyloidosis, a study was conducted in the nephrology and hemodialysis department at Ibn Rochd University Hospital from February 1996 to January 1998.

Methods: Renal amyloidosis was confirmed by renal biopsy accompanying accessory salivary gland biopsy.

Result: The patient's mean age was 39 years old (range 15-80), with a 4:1-male/female ratio. An infectious cause (either tuberculosis or superinfection and dilatation of the bronchi) was the most frequent (70% of the cases) etiology. All the patients presented renal symptomatology. Nephrotic syndrome predominated. Amyloid deposits were observed in 100% of renal needle biopsies and in 80% of accessory salivary gland biopsies.

Conclusion: Renal biopsy led to more positive cases than the other biopsies. It may be accompanied by severe complications. Furthermore, biopsy of the accessory salivary glands is a simple and very reliable technique for the diagnosis of amyloidosis. It is currently the best diagnostic test.