Bacillary peliosis

Definition

Bacillary peliosis is a rare vascular condition characterized by blood-filled cystic spaces within organs, most commonly the liver and spleen. It is primarily associated with infections caused by Bartonella henselae or Bartonella quintana.

5 Must Know Facts For Your Next Test

1. Bacillary peliosis often presents in immunocompromised individuals, such as those with HIV/AIDS.
2. The primary pathogens responsible are Bartonella henselae and Bartonella quintana.
3. Diagnosis typically involves imaging studies like ultrasound or CT scans, along with serological tests for Bartonella species.
4. Histological examination reveals blood-filled cystic spaces lined with endothelial cells in affected organs.
5. Treatment usually includes antibiotics such as doxycycline or erythromycin.

Review Questions

• What are the primary pathogens responsible for bacillary peliosis?
• In which organs is bacillary peliosis most commonly found?
• What type of diagnostic tests are used to identify bacillary peliosis?

Related terms

Bartonella henselae: A gram-negative bacterium that causes cat scratch disease and can lead to bacillary angiomatosis and bacillary peliosis.

Immunocompromised Host: An individual whose immune system is weakened, making them more susceptible to infections.

Doxycycline: An antibiotic commonly used to treat bacterial infections including those caused by Bartonella species.