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The radiology of melioidosis
Abstract:
Melioidosis varies from subclinical infection to fulminating disease with multiple organ involvement. Although endemic in South-East Asia and northern Australia, it may be imported into temperate zones. It is the wide spectrum of manifestation that makes it 'the great imitator'. The purpose of this pictorial essay is to familiarize the radiologist with the range of radiological manifestations of this disease. Intrathoracic findings include pulmonary nodules, consolidation, necrotizing lesions, pleural effusion, pleural thickening and mediastinal abscess. Abscess in almost all organ systems can be seen in the septicaemic and suppurative infections. Both clinical and radiological findings are non-specific. A high index of suspicion is required to focus the search for bacteriological confirmation. A prompt diagnosis is essential, as melioidosis is often rapidly fatal.
Insights
Melioidosis, a bacterial infection, presents diverse symptoms, mimicking other diseases. Early recognition of its varied radiological signs is crucial for prompt diagnosis and treatment, as it can be rapidly fatal.
Area of Science:
- Infectious Diseases
- Radiology
- Medical Imaging
Background:
- Melioidosis is a bacterial infection with a broad range of clinical presentations, from asymptomatic to severe multi-organ involvement.
- It is endemic in Southeast Asia and Northern Australia but can be imported globally.
- The disease is known as 'the great imitator' due to its non-specific clinical and radiological findings.
Purpose of the Study:
- To familiarize radiologists with the diverse radiological manifestations of melioidosis.
- To highlight the importance of recognizing imaging findings suggestive of melioidosis.
- To emphasize the need for a high index of suspicion for prompt diagnosis.
Main Methods:
- This is a pictorial essay.
- It reviews and illustrates the spectrum of radiological findings associated with melioidosis.
- The essay focuses on intrathoracic and systemic organ involvement.
Main Results:
- Radiological findings include pulmonary nodules, consolidation, necrotizing lesions, pleural effusion, pleural thickening, and mediastinal abscesses.
- Abscesses can occur in nearly all organ systems due to septicemic and suppurative infections.
- Clinical and radiological features are often non-specific, necessitating a high index of suspicion.
Conclusions:
- Melioidosis presents a wide array of radiological manifestations that can mimic other conditions.
- Prompt bacteriological confirmation is essential due to the potentially fatal nature of the disease.
- Radiologists play a critical role in identifying potential cases through recognizing imaging patterns.