Overview
What is bacillary angiomatosis?
What are the signs and symptoms of bacillary angiomatosis?
What are the symptoms of visceral involvement in bacillary angiomatosis?
Which lab tests are performed in the workup of bacillary angiomatosis?
What imaging studies are performed in the workup of bacillary angiomatosis?
What is the role of biopsy in the workup of bacillary angiomatosis?
What is the role of endoscopy and bronchoscopy in the workup of bacillary angiomatosis?
How is bacillary angiomatosis treated?
When was bacillary angiomatosis originally identified?
What is the role of antibiotics in the treatment of bacillary angiomatosis?
What is included in patient education about bacillary angiomatosis?
What is the pathophysiology of bacillary angiomatosis?
What is the pathogenesis of bacillary angiomatosis?
What is the pathogenesis of bacillary angiomatosis?
What causes vascular proliferation in the pathophysiology of bacillary angiomatosis?
What are the disease reservoirs of B henselae causing bacillary angiomatosis?
What are the risk factors for bacillary angiomatosis?
What are the risk factors for bacillary angiomatosis caused by B henselae infection?
What are the risk factors for bacillary angiomatosis caused by B quintana infection?
What causes bacillary angiomatosis in HIV-negative patients?
What is the prevalence of bacillary angiomatosis in the US?
What is the global prevalence of bacillary angiomatosis?
What are the racial predilections of bacillary angiomatosis?
What is the sexual predilection of bacillary angiomatosis?
Which age groups have the highest prevalence of bacillary angiomatosis?
What is the prognosis of bacillary angiomatosis?
What are the possible complications of bacillary angiomatosis?
Presentation
Which clinical history findings are characteristic of bacillary angiomatosis?
How are the lesions of bacillary angiomatosis characterized?
Which clinical history findings are characteristic of visual involvement in bacillary angiomatosis?
Which cutaneous findings are characteristic of bacillary angiomatosis?
Which mucosal findings are characteristic of bacillary angiomatosis?
Which ocular findings are characteristic of bacillary angiomatosis?
Which visceral findings are characteristic of bacillary angiomatosis?
DDX
Which conditions are included in the differential diagnoses of bacillary angiomatosis?
How is Kaposi sarcoma differentiated from bacillary angiomatosis?
How is cat scratch disease differentiated from bacillary angiomatosis?
How is verruga peruana and Oroya fever differentiated from bacillary angiomatosis?
What are the differential diagnoses of bacillary angiomatosis?
Workup
Which lab test findings suggest bacillary angiomatosis?
Which radiology findings suggest bone involvement in bacillary angiomatosis?
Which biopsies may be performed in the workup of bacillary angiomatosis?
Which endoscopy findings suggest bacillary angiomatosis?
Which bronchoscopy findings suggest bacillary angiomatosis?
How is bacillary angiomatosis diagnosed?
What is the role of enzyme immunoassays in the workup of bacillary angiomatosis?
What is the role of blood cultures in the workup of bacillary angiomatosis?
What is the role of radiography in the workup of bacillary angiomatosis?
What is the role of CT scanning and MRI in the workup of bacillary angiomatosis?
Which histologic findings are characteristic of bacillary angiomatosis?
Which skin histologic findings are characteristic of bacillary angiomatosis?
Which liver histologic findings are characteristic of bacillary angiomatosis?
Which lymph nodes histologic findings are characteristic of bacillary angiomatosis?
Which bone histologic findings are characteristic of bacillary angiomatosis?
What is pseudoepitheliomatous hyperplasia in bacillary angiomatosis?
What is the role of Warthin-Starry silver stain in the histologic exam of bacillary angiomatosis?
Which transmission electron microscopy findings are characteristic of bacillary angiomatosis?
Treatment
What is the role of antibiotics in the treatment of bacillary angiomatosis?
Which organizations have published guidelines on bacillary angiomatosis?
What is the role of surgery in the treatment of bacillary angiomatosis?
Which specialist consultations are beneficial to patients with bacillary angiomatosis?
What is included in the long-term monitoring of bacillary angiomatosis?
Which antibiotics are used in the treatment of bacillary angiomatosis?
What is the duration of antibiotic treatment of bacillary angiomatosis?
How is bacillary angiomatosis prevented?
Medications
What are the preferred antibiotics for the treatment of bacillary angiomatosis?
Which medications in the drug class Antibiotics are used in the treatment of Bacillary Angiomatosis?
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A 35-year-old retrovirus-negative Mexican immigrant who had undergone recent splenectomy for idiopathic thrombocytopenic purpura, with multiple violaceous nodules on his trunk.
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Many blood vessels of varying dimensions lined by swollen endothelial cells that contain bacilli. An infiltrate of acute and chronic inflammatory cells as well as fibrin deposition is noted in places (hematoxylin and eosin, X80).
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A 40-year-old HIV-positive homosexual man with lichenoid cutaneous plaques on his upper extremities.
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Lesion showing large masses of blood vessels of markedly varying dimensions lined by swollen endothelial cells. The tissue is friable with evident fragmentation during processing (hematoxylin and eosin, X23).