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Early diagnosis of necrotizing fasciitis by utilization of ultrasonography
1Department of Surgery, Chung-Ho Memorial Hospital, Kaohsiung Medical College, Taiwan, Republic of China.
Abstract:
Necrotizing fasciitis is a rare and rapid progression soft tissue infection. The only identifiable feature is tissue necrosis along a single fascia plane. Because the skin is initially spared, it is difficult for early recognition prior to extensive tissue destruction. Ultrasonography was used for early diagnosis of this infection in five cases. All 5 patients presented with severe cellulitis. Under the suspicion of necrotizing fasciitis, ultrasonography was performed before surgical debridement. Tissue biopsy was done for histological confirmation of the diagnosis. Three patients were proven to have necrotizing fasciitis and two cellulitis only. The ultrasonographic findings of necrotizing fasciitis included: 1) irregularity of the fascia; 2) abnormal fluid collections along the fascia plane; and 3) diffuse thickening of the fascia when compared with the control site in the normal limb. However, in severe infectious cellulitis, the above mentioned findings were not observed. Our results indicate the usefulness of the ultrasonography for early diagnosis of necrotizing fasciitis.
Insights
Early diagnosis of necrotizing fasciitis (NF) is challenging due to subtle early signs. Ultrasonography can identify key fascial abnormalities, aiding in the early detection of this severe soft tissue infection.
Area of Science:
- Medical Imaging
- Infectious Diseases
- Surgical Pathology
Background:
- Necrotizing fasciitis (NF) is a severe, rapidly progressing soft tissue infection.
- Early recognition is difficult as skin manifestations are often delayed, leading to extensive tissue destruction.
- Prompt diagnosis and surgical intervention are critical for patient outcomes.
Purpose of the Study:
- To evaluate the utility of ultrasonography for the early diagnosis of necrotizing fasciitis.
- To identify specific ultrasonographic findings indicative of NF.
Main Methods:
- A case series of five patients presenting with severe cellulitis was retrospectively analyzed.
- Ultrasonography was performed prior to surgical debridement in suspected NF cases.
- Histological examination of tissue biopsy confirmed the diagnosis.
Main Results:
- Ultrasonography revealed characteristic findings in three patients diagnosed with NF: fascial irregularity, abnormal fluid collections along the fascia, and diffuse fascial thickening.
- These findings were absent in two patients with severe cellulitis only.
- Ultrasonography differentiated NF from severe cellulitis.
Conclusions:
- Ultrasonography is a valuable tool for the early diagnosis of necrotizing fasciitis.
- Specific ultrasonographic findings can help distinguish NF from other soft tissue infections like cellulitis.
- This imaging modality can guide timely surgical debridement, potentially improving patient prognosis.