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53-year-old man presented with monoarthritis of the knee without fever evolving since 6 months associated with an inflammatory biological syndrome. The articular puncture brought back a sterile inflammatory fluid. The radiographs of the frontal knee (A) and profile knee (B) and CT of the knee (C, D) showed destruction of the internal femoral condyle with osteolysis of the medial border of the internal tibial plateau associated with multiple bone constructions with the presence of intra-articular fragments, intra-articular effusion and thickening of the synovium. The diagnosis of tabetic arthropathy in its hypertrophic form was retained following a 20-year history of syphilitic inoculation chancre, posterior radiculocordonal syndrome, imaging data and positive syphilitic serology (TPHA-VDRL) in the blood and cerebrospinal fluid. The patient was treated with penicillin G (24 million/day) for 15 days. Tabetic arthropathy is a type of neuropathic arthropathy that has become rare and unfamiliarity with the clinical presentation of this disease may lead to considerable delay in diagnosis. This disease means progressive painless joint destruction that is related to neurosensory deficits caused by syphilis. His diagnosis is difficult as its clinical presentation is not specific and differential diagnosis is wide ranging. Hence, his diagnosis requires clinical suspicion and an appropriate serological test.

Objective. – To identify a new clinical entity of chronic arthritis and /or a new prognosis factor of benign outcome.Methods. – Twelve patients with chronic arthritis with a follow-up of more than 10 years cannot be classified in none of the actually define clinical entities. Synovial fluids of these 12 patients were predominantly lymphomonocytic. They were compared with those of 59 rheumatoid arthritis patients.Results. – In addition to their lympho-monocytic synovial fluids, the 12 patients have in common: a long term evolution with periods of remission; the absence of clinical or radiological joint damages even in those with a 30 years followup; a good efficacy of local treatments (mainly corticosteroid); the inefficacy of the “second line” drugs; the young age of patients at onset and a sex-ratio near to 1. When compared with rheumatoid arthritis synovial fluids, it appears that the absolute number of lympho-monocytes is similar in the 2 groups but that the absolute number and the percentage of PMN is lower in the 12 patients than in rheumatoid arthritis.Conclusion. – We propose to identify these patients as lymphomonocytic idiopathic arthritis or to take into account, the low level of PMN, as Florysyndrome, the name of the first patient. [Copyright &y& Elsevier]

Introduction: Capnocytophagacanimorsus (C. canimorsus), a commensal Gram-negative bacillus found in the oral cavity of dogs and cats, is pathogenic for humans, with the most common clinical manifestations being septicemia, meningitis and endocarditis. Herein we report a case of CC bacteremia manifesting as multiple plaques of erythema annulare centrifugum associated with monoarthritis of the knee., Patients and Methods: A 66-year-old man consulted for a skin rash and monoarthritis of the right knee with fever following an insect bite on his right hallux. Cutaneous examination revealed numerous erythematous annular plaques on the trunk and limbs with centrifugal extension. Analysis of synovial fluid from the right knee showed an inflammatory liquid with a sterile bacteriological culture and PCR was negative for Borrelia. C. canimorsus bacteria were isolated from blood cultures. 16S RNA PCR performed on the synovial fluid was positive for the same organism. The patient's history revealed that his hallux wound had been licked by his dog., Discussion: C. canimorsus most frequently affects immunosuppressed subjects. Cutaneous signs are seen in half of all cases, most frequently presenting as cellulitis, pathological livedo or thrombotic purpura. We report herein a case of CC bacteremia in an immunocompetent patient manifesting as multiple plaques of erythema annulare centrifugum, an unusual sign, and monoarthritis of one knee., (Copyright © 2020 Elsevier Masson SAS. All rights reserved.)