A rare case of small-vessel necrotizing vasculitis of the bone marrow revealing granulomatosis with polyangiitis
Résumé
A 62-year-old man, who was a heavy drinker, presented with deep asthenia, isolated fever, inflammatory syndrome (CRP 120 mg/l) and cytopenias (Hb 6.5 g/dl, platelet count 100 G/l). A whole-body CT scan found dysmorphic hepatomegaly and splenomegaly. Endoscopy revealed bleeding gastrointestinal angiodysplasia and non-bleeding oesophageal varices. After coagulation for angiodysplasia and blood transfusions, the Hb level remained around 8.5 g/dl. To investigate blood malignancy, a bone marrow biopsy revealed small-vessel vasculitis (Fig. 1A, 2), fibrinoid necrosis affecting the small vessel walls (Fig. 1A, 3), multinucleated giant cells (Fig. 1A, 1) constituting microgranulomas (Fig. 1A, 4) and...