Rheumatoid arthritis complicated with myeloperoxidase antineutrophil cytoplasmic antibody (MPO-ANCA)-associated vasculitis: a case report.

This article describes a patient with rheumatoid arthritis (RA) with crescentic glomerulonephritis (CrGN) associated with myeloperoxidase-antineutrophil cytoplasmic antibodies (MPO-ANCA), who responded well to methotrexate (MTX). A 48-year-old woman with a 4-year history of RA was admitted with fever and elevated C-reactive protein. On laboratory evaluation, her level of MPO-ANCA was 422 EU, and urinalysis revealed proteinuria and hematuria.

Pyoderma gangrenosum complicated with myelodysplastic syndrome followed by rapidly progressing pyothorax-associated lymphoma: a case report.

This report describes a patient with pyoderma gangrenosum (PG) complicated with myelodysplastic syndrome (MDS) followed by rapidly progressing pyothorax-associated lymphoma (PAL). A 74-year-old man was admitted with cutaneous gangrene associated with MDS. We diagnosed him as having PG, and high-dose oral prednisolone was started.

Microscopic polyangitis triggered by fungal infection.

We report a case of microscopic polyangitis associated with fungal infection. A 64-year-old man was admitted to our hospital because of renal dysfunction and high fever. He complained of arthralgia and myalgia.

Prevalence of serum anti-myeloperoxidase antineutrophil cytoplasmic antibodies (MPO-ANCA) in patients with Graves' disease treated with propylthiouracil and thiamazole.

Patients with Graves' disease (n = 61) treated with propylthiouracil (PTU) or thiamazole (MMI) were studied retrospectively to investigate differences in the prevalence of anti-myeloperoxidase anti-neutrophil cytoplasmic antibodies (MPO-ANCA) in relation to treatment with anti-thyroid drugs. The patients were divided into two groups: PTU-treated group (n = 32) and MMI-treated group (n = 29). There were no significant differences between the two groups in terms of age, gender distribution, or duration of treatment.