Bacillary angiomatosis (BA), an infection caused by a gram-negative rod, can be a multi-organ disease. The usual causative organism, Bartonella (formerly Rochalimaea) hensalae, has only recently been identified. Bartonella quintana has also been shown to cause some cases of cutaneous BA. We describe a patient with widespread cutaneous BA with probable bone involvement and a large fungating mass.
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