CNS Vasculitis Associated with Waldenström Macroglobulinemia.

Waldenström macroglobulinemia (WM) is an indolent B cell lymphoproliferative disorder with monoclonal IgM secretion. We present a patient with WM who presented with multifocal acute cortical ischemic strokes and was found to have central nervous system (CNS) vasculitis. Workup was negative for cryoglobulins and hyperviscosity syndrome.

Diffuse leukoencephalopathy and subacute parkinsonism as an early manifestation of systemic lupus erythematosus.

Parkinsonism in SLE is rare. Diffuse leukoencephalopathy is equally uncommon and is associated with a poor prognosis. We present a single case of a 50-year-old Filipino man who presented with a generalized discoid rash after starting lisinopril.

New onset systemic lupus erythematosus in a transgender man: possible role of feminizing sex hormones.

Systemic lupus erythematosus (SLE) is rare in men, and significantly more common in women. Sex hormone influences are believed to a play a role in these gender differences. We present the unusual case of a transgender man who had been taking feminizing sex hormones, who later developed new onset SLE with cardiorespiratory and renal involvement.

Mycobacterium tuberculosis infection of a tophaceous pseudogout nodule.

Musculoskeletal infections are uncommon complications of monosodium urate and calcium pyrophosphate dihydrate (CPPD) crystal deposition disease, and frequently involve gram positive and negative organisms. Tumoral calcinosis (tophaceous pseudogout) is a rare manifestation of CPPD deposition disease. We describe a highly unusual case of an infection by Mycobacterium tuberculosis (TB) of a tophaceous pseudogout nodule in a patient with endstage renal disease.