Primary brain abscess with Nocardia otitidiscaviarum in an intravenous drug abuser

E Durán1, L López, A Martínez

  • 1Service of Microbiology, Clinic Hospital Lozano Blesa, Zaragoza, Spain.

Insights

This case study reports a rare primary brain abscess caused by Nocardia otitidiscaviarum in an intravenous drug user. The patient survived after surgery and specific antibiotic treatment, highlighting a successful outcome in an immunocompromised individual.

Area of Science:

  • Neurology
  • Infectious Diseases
  • Microbiology

Background:

  • Nocardia brain abscess is infrequent, typically affecting immunocompromised patients.
  • Primary Nocardia brain abscesses can arise from pulmonary or cutaneous sources.
  • Intravenous drug abuse is a risk factor for various infections, including rare abscesses.

Observation:

  • A case of primary brain abscess caused by Nocardia otitidiscaviarum in an intravenous drug abuser.
  • Initial clinical presentation mimicked an astrocytoma.
  • Nocardia otitidiscaviarum was identified after emergency craniotomy.

Findings:

  • Successful surgical removal of the brain abscess.
  • Effective antibiotic treatment with imipenem and trimethoprim-sulphamethoxazole.
  • Patient survival, contrasting with previously reported cases.

Implications:

  • Demonstrates a rare presentation of Nocardia otitidiscaviarum brain abscess in an immunocompromised patient.
  • Highlights the importance of considering Nocardia in brain abscesses, especially in at-risk populations.
  • Suggests that prompt surgical intervention and appropriate antibiotic therapy can lead to favorable outcomes.

Related Concept Videos

Pulmonary Tuberculosis I01:29

Pulmonary Tuberculosis I

Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Acute Pyelonephritis I: Introduction01:27

Acute Pyelonephritis I: Introduction

Pyelonephritis is a bacterial infection that primarily affects the renal parenchyma and collecting system, including the renal pelvis, tubules, and interstitial tissue of one or both kidneys. It can be classified as either acute—a sudden, severe infection—or chronic, which refers to long-term or recurrent kidney infections.The primary cause of acute pyelonephritis (APN) is bacterial infection, with Escherichia coli accounting for approximately 70-80% of cases. Other bacteria, such as Proteus,...
Cryptococcal Meningitis01:27

Cryptococcal Meningitis

Cryptococcal meningitis is a life-threatening opportunistic infection predominantly associated with HIV/AIDS, accounting for over 100,000 deaths annually worldwide. However, it also affects individuals with other forms of immunosuppression, including those undergoing immunosuppressive therapy, organ transplant recipients, patients with innate immunodeficiencies, and individuals with hematological disorders. The infection is caused mainly by Cryptococcus neoformans and Cryptococcus gattii,...
Bacterial Meningitis II: Pathophysiology01:26

Bacterial Meningitis II: Pathophysiology

Bacterial meningitis typically begins when pathogens such as Neisseria meningitidis and Streptococcus pneumoniae colonize the nasopharynx and invade the bloodstream. This process is facilitated by bacterial virulence factors, such as polysaccharide capsules, which resist phagocytosis and complement-mediated killing. Less commonly, bacteria reach the central nervous system via contiguous spread from infections like otitis media or sinusitis, through congenital or acquired dural defects, or...
Brain Abscess l: Introduction01:26

Brain Abscess l: Introduction

A brain abscess is a focal, intracerebral infection characterized by a localized collection of pus within the brain parenchyma, resulting from microbial invasion and the body’s inflammatory response. It progresses through stages: early and late cerebritis, followed by early and late capsule formation, reflecting tissue destruction, immune response, and eventual encapsulation.Etiology and PathogenesisCausative organisms vary with source and host factors, often involving polymicrobial infections,...