An unusual imaging finding mimicking double contour sign following ultrasound-guided intra-articular knee injection of steroid: A case report

Serdar Kokar1, Özlem Mercan2, Kenan Akgün3

1Department of Algology, Şanlıurfa Training and Research Hospital, Şanlıurfa, Türkiye
2Department of Algology, Gazi Yaşargil Training and Research Hospital, Diyarbakır, Türkiye
3Division of Pain Management, Department of Physical Medicine and Rehabilitation, İstanbul University - Cerrahpaşa, Faculty of Medicine, Istanbul, Türkiye

Keywords: Arthritis, gouty, intraarticular injection, steroids, ultrasound.

Abstract

Examination of monosodium urate crystals in the synovial fluid remains the gold standard for the diagnosis of gout. On ultra-sound (US) examination, the double contour sign (DCS) is one of the most common imaging findings of gout. In this article, we present, for the first time, a unique imaging finding mimicking DCS after US-guided intra-articular knee injection of steroid and discuss it in light of the literature data.