Bacillary Angiomatosis - Pathology Slides Check out this delightful example of bacillary angiomatosis, which presented as a soft tissue mass. Some organisms are indicated on a Warthin-Starry stain. Soft tissue is next in Pathology survival guides! - Elizabeth Montgomery, MD @LizMontgomeryMD #Bacillary #Angiomatosis #Bartonella #Pathology #Microscopy #Clinical