Acute Phase of Sero-negative Rheumatoid Arthritis Misdiagnosed as Pyogenic Arthritis: A Case Report.

Author: Cheol Hee PARK ¹ ; Joo Hyun LEE ; Tae Jin KIM ; Dong HURR ; Young Soo CHUN ; Kee Hyung RHYU ; Yoon Je CHO
Author Information

1. Department of Orthopedic Surgery, College of Medicine, Kyung Hee University, Seoul, Korea. yjcho@khmc.or.kr
Publication Type:Case Report
Keywords: Hip; Seronegative rheumatoid arthritis; Pyogenic arthritis
MeSH: Arthritis; Arthritis, Rheumatoid; Biopsy; Frozen Sections; Hematologic Tests; Hip; Neutrophils
From:Hip & Pelvis 2012;24(4):328-332
CountryRepublic of Korea
Language:Korean
Abstract: In cases of sero-negative rheumatoid arthritis (RA), no abnormal findings are observed on blood tests and its clinical course is favorable, compared to sero-positive RA. In the acute phase of sero-negative RA, infiltration of neutrophils may be the only pathologic finding on frozen section biopsy. Thus, it might be misdiagnosed as pyogenic arthritis. We report on a case of acute sero-negative RA misdiagnosed as pyogenic arthritis during hip surgery with review of the literature.