We describe an unusual presentation of a localized form of polyarteritis nodosa (PAN) manifested by acute onset of severe calf pain. Biopsies of the gastrocnemius muscle and fascia revealed an acute necrotizing arteritis with fasciitis. The lumens of affected vessels were occluded by thrombi. PAN localized to calf muscles is extremely rare. To our knowledge this is the first report of evidence ...

Fig. S1. (A) Purpuric cutaneous nodules on the right sole. (B) Fibrinoid necrosis, admixture of neutrophils and lymphocytes in and around blood vessels, and nuclear dust characteristics of necrotizing vasculitis in the subcutaneous fat were found in the cutaneous nodule on the right sole indicated #1 in (A) by an initial section. (C) Cutaneous nodules and purpuric lesions with livedo in the lef...

The clinical presentation of Systemic Lupus Erythematosus (SLE) is diverse and vasculitis can be a potential manifestation. Cutaneous lesions involving small vessels are the most frequent presentation. However, medium and large vessel vasculitis may present with life-threatening visceral manifestations. We present a unique case of pelvic vasculitis mimicking a pelvic mass as an initial presenta...

Twelve children are described with an essentially benign vasculitic illness in association with streptococcal infection. They demonstrated characteristic clinical features of nodular cutaneous polyarteritis with fever. Laboratory findings showed an acute phase response associated with raised antistreptolysin and antihyaluronidase titres in all patients and a positive throat culture for beta hae...