Pyogenic sacroiliitis and pyomyositis in a patient with systemic lupus erythematous

Septic arthritis of the sacroiliac joint

Septic arthritis is an inflammation of a joint caused directly by various microorganisms. It is often characterized by many unspecific symptoms. Bacteria is the most often etiological factor.

We present a case report of a 76-years old woman with a unilateral septic arthritis of the sacroiliac joint. Bacterial sacroiliitis should be taken into account in patients with sacroiliitis and fever onset.

Proper diagnosis can be very often difficult and delayed but fast implementation of antibiotic therapy is extremely important in the treatment process. Diagnostic imaging is crucial to the diagnosis and monitoring of septic arthritis. Magnetic resonance imaging is the most relevant tool for the detection of sacroiliitis, allowing the institution of therapeutic strategies to impede the progression of the disease.

Pyomyositis in a patient with systemic lupus erythaematosus and a review of the literature

Pyomyositis (PM) is a common masquerading disease that is frequently misdiagnosed. A concurrent state of immunodeficiency is observed in up to 75% of tropical PM cases. PM in systemic lupus erythaematosus (SLE) is a relatively rare disease. I report a case of PM that was caused byKlebsiella pneumoniaein a patient with SLE who presented with leg pain, fever and a lupus flare-up. The patient was correctly diagnosed using a CT scan. Immediate surgical drainage was performed, and empirical antibiotics were administered. The patient was discharged while in a recovering condition. The clinical features, the results of radiographic investigations and the management of PM in SLE are synopsised in this article to underscore the importance of considering this relatively rare disease during differential diagnosis in patients with SLE with muscle pain with or without fever. I also emphasise the need to exclude mycobacterial infection in patients with SLE with PM.