From the Research
No, a Morel-Lavallee lesion typically does not produce air in tissues. A Morel-Lavallee lesion is a closed degloving injury that occurs when subcutaneous tissue separates from the underlying fascia, creating a potential space that fills with blood, lymph, and necrotic fat [ 1 ]. This collection forms a fluctuant mass but does not generate gas or air within the tissues. The presence of air in soft tissues is more commonly associated with gas-forming infections like necrotizing fasciitis, gas gangrene (caused by Clostridium species), or penetrating trauma that introduces air into the tissues.
Pathophysiology and Clinical Presentation
The pathophysiology of Morel-Lavallee lesions involves shearing forces that disrupt perforating vessels and lymphatics, leading to fluid accumulation, but this mechanism does not involve gas production [ 2 ]. The clinical presentation of Morel-Lavallee lesions can vary, but they are often characterized by a fluctuant mass in the affected area.
Imaging and Diagnosis
Imaging studies, such as MRI, can be used to diagnose Morel-Lavallee lesions and distinguish them from other conditions [ 3 ]. If air is detected in imaging studies of what appears to be a Morel-Lavallee lesion, clinicians should consider alternative diagnoses or a superimposed infection of the lesion.
Treatment and Management
Treatment of Morel-Lavallee lesions typically includes drainage, compression, and sometimes sclerotherapy, without specific measures needed for gas in tissues [ 4 ]. The management of Morel-Lavallee lesions can be challenging, and there is no universally accepted treatment algorithm. However, prompt and appropriate treatment can help to prevent complications and improve outcomes.
Key Points
- Morel-Lavallee lesions do not typically produce air in tissues
- The pathophysiology of Morel-Lavallee lesions involves shearing forces that disrupt perforating vessels and lymphatics, leading to fluid accumulation
- Imaging studies, such as MRI, can be used to diagnose Morel-Lavallee lesions and distinguish them from other conditions
- Treatment of Morel-Lavallee lesions typically includes drainage, compression, and sometimes sclerotherapy, without specific measures needed for gas in tissues.