Gouty Tophus: Cytological Findings in a Case Diagnosed by Fine Needle Aspiration

Abstract

A case of gouty tophus in the elbow of a 62-year-old male is presented. Fine-needle aspiration (FNA) revealed the presence of acicular crystals, birefringent when viewed under polarized light as is typical for monosodium urate crystals. Histological study of the removed lesion confirmed a typical gouty tophus. We briefly comment the main characteristics of this entity.