Novel sluggish speed signs on ultrasound is indicative of hemangiomas

Abstract

Background

Hemangiomas are sometimes difficult to diagnose with current techniques. Sluggish speed signs (SSS) are a phenomenon that: (i) cannot be depicted as Doppler flow on Doppler ultrasound; (ii) can be observed as fluid movements on Doppler ultrasound; and (iii) cannot be depicted as waveforms on pulse Doppler mode. We hypothesized that SSS could be diagnostic indicators for hemangiomas.

Purpose

To evaluate whether ultrasound findings, in particular those relating to SSS, are a reliable tool for detecting hemangiomas compared to magnetic resonance imaging (MRI) and the gold standard for hemangioma diagnosis: pathological examination by biopsy or after surgical resection.

Material and Methods

Totally, 105 patients (mean age, 44.9 years) with soft-tissue tumors underwent MRI and ultrasound examination before biopsy or tumor resection. Ultrasound findings were compared with MRI as well as pathological findings, which were used as reference.

Results

Hemangiomas were identified in 16 (6.25%) of the 105 patients. On MRI, flow voids showed sensitivity and specificity values of 81.3% and 96.6%, respectively. On ultrasound examination, SSS was the only finding to show equally high sensitivity (93.8%) and specificity (96.6%) for diagnosing hemangiomas. There was no significant difference in the diagnostic capabilities between these two parameters (P = 0.479).

Conclusion

SSS showed a high sensitivity and specificity for diagnosing hemangiomas and therefore are useful diagnostic tools to supplement MRI.

Keywords

Hemangioma ultrasonography magnetic resonance imaging (MRI)blood flow velocity diagnosis

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