High-resolution ultrasound imaging of cutaneous lesions

Mandava, Anitha; Ravuri, Prabhakar Rao; Konathan, Rajyalaxmi

doi:10.4103/0971-3026.120272

Cited by 95 publications

(109 citation statements)

References 39 publications

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“…Doppler US is used to assess the vascularization of the skin tumors before surgical excision, high vascularization being correlated with an important risk of metastasis [17][18][19][20]. The thickness of CM lesions represents a very important element for preoperative management and prognosis, being correlated with the risk of metastasis or relapsing, as well [11,12,21,22].…”

Section: Discussionmentioning

confidence: 99%

“…The presence of a greater number of vascular pedicles shows an abundant blood supply. Knowing that vascularization may be related to tumor aggressiveness, through to the metastatic potential or relapsing and reduced longterm survival [12,19,23,24], it is very important for these patients to have a good management both pre-and postoperatively.…”

Section: Discussionmentioning

confidence: 99%

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Doppler ultrasound and strain elastography in the assessment of cutaneous melanoma: preliminary results

et al. 2015

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Aim: To study the usefulness of color or power Doppler ultrasound (US) in the pre-surgical evaluation of skin melanoma, and to correlate the Doppler characteristics with the appearance on high frequency ultrasound strain elastography (SE) in the preoperative evaluation of cutaneous melanoma. Materials and method: The study included 42 cutaneous melanoma lesions in 39 adult subjects examined between September 2011 and January 2015. Doppler US features (the presence and aspect of vascularization, and the number of vascular pedicles) and elasticity by strain elastography were evaluated together with the pathological results. Results: The melanoma lesions presented hyper-vascularization, with multiple vascular pedicles and stiff appearance. Significant correlations between the thickness of the tumor, measured histopathologically by the Breslow index, and the degree of vascularization (p=0.0167), and number of vascular pedicles (p=0.0065) were identified. Strong correlations between the SE appearance and vascularization on one hand, and SE and the number of vascular pedicles were also identified (p<0.001). Conclusion: Our study demonstrates that Doppler US and SE offer useful information for THE preoperative evaluation of cutaneous melanoma and may contribute to better defining the long term prognosis.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Doppler ultrasound and strain elastography in the assessment of cutaneous melanoma: preliminary results

et al. 2015

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“…This is coupled with literature describing the differential appearance on ultrasound images of various skin lesions, chief among them melanoma, basal cell carcinoma (BCC), and benign nevi. Melanoma is generally described as being the most hypoechoic, with-well defined borders, a thin echo entry, and a spindle-like shape [6][7][8][9]. In contrast, BCC lesions are less hypoechoic, often feature many hyperechoic spots, and their contours are generally more irregular, while nevi are moderately hyperechoic, well demarcated from the dermis, and oval-to-circular in shape [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…Melanoma is generally described as being the most hypoechoic, with-well defined borders, a thin echo entry, and a spindle-like shape [6][7][8][9]. In contrast, BCC lesions are less hypoechoic, often feature many hyperechoic spots, and their contours are generally more irregular, while nevi are moderately hyperechoic, well demarcated from the dermis, and oval-to-circular in shape [6][7][8][9][10]. According to one of the coauthors K. Szalai (a radiologist with extensive experience in the ultrasound examination of skin lesions), the qualitative features of these lesions are as summarized in Table 1 As a means of comparing the ultrasound features quoted in the literature as well as those given in Table 1, Fig.…”

Section: Introductionmentioning

confidence: 99%

Automated classification of common skin lesions using bioinspired features

Csabai

Szalai

Gyöngy

2016

2016 IEEE International Ultrasonics Symposium (IUS)

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Abstract-Ultrasound (US) imaging of skin lesions provides information supplementary to dermoscopy and helps in improving diagnostic accuracy. The aim of the current work is to explore the feasibility of using ultrasound image features derived from radiological experience to distinguish between common skin lesions. 5-18 MHz B-mode ultrasound images were acquired of incoming patients. Images containing lesions 1-2 mm thick were selected (N=248), with histology used to diagnose suspicious lesions. 73 melanomas, 130 BCC, and 45 nevi were studied. Following semi-automatic segmentation, a number of relevant features expressing the geometry of the lesion boundary and boundary layer, as well as the image characteristics of the lesion, lesion boundary layer, and post-lesion region were considered. With the exception of lesion echogenicity, all features had an area under the curve (AUC) value of above 0.70. The AdaBoost and Support Vector Machine (SVM) classifiers were then trained and tested using cross-validation of 50 random equal populations of melanomas, BCC, and nevi; each population was then 2-fold (holdout) cross-validated 50 times. When detecting one group against two other groups, the detection of cancerous lesions fared best, with an AUC of at least 0.84 and a specificity of at least 19% at 100% sensitivity for both classifiers. The results demonstrate the potential of clinically useful ultrasound-based automatic differential diagnosis of skin lesions, which could perhaps be attained by better segmentation, having more training data, using several images of the same lesion when performing classification, as well as refinements in the definition of image features.

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“…The recent development of high-frequency ultrasound (HFU) transducers has led to a vast range of applications in dermatology, such as the evaluation of inlammatory diseases (psoriasis, scleroderma), tumours and skin ageing and so on [7]. Several studies have proven similarities between ultrasound (US) and histological sections [8]. The inclusion of ultrasound among the procedures used for the dermatological diagnosis is an atempt to replace the invasive procedures such as biopsies, with non-invasive ones as much as possible.…”

Section: Sonography: General Considerationsmentioning

confidence: 99%

Ultrasonography as a New, Non-Invasive Imagistic Technique Used for the Diagnosis and Monitoring of Psoriasis

Crışan¹,

Badea²,

Crişan³

et al. 2017

An Interdisciplinary Approach to Psoriasis

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Psoriasis is a chronic inlammatory autoimmune disease that involves the skin, nails, joints and other organs, being a systemic disease. Regardless of the clinical form, sonography can be efectively used to complete the clinical diagnosis. Aim:The identiication of non-invasive sonographic markers for the assessment of the severity of the disease and the eicacy of various therapies. Our study involved two research directions: (a) clinical and imagistic assessment of the skin and nail psoriasis lesions and (b) the imagistic evaluation of the therapeutic eicacy in psoriasis plaques and nail psoriasis by acquirement of sonographic images prior and after various therapies. Methods:In our prospective study, we used a multimodal evaluation of the disease, based on a non-invasive approach: clinical exam, dermoscopy, conventional and high frequency sonography, Doppler, power Doppler and elastography. Conclusions:Ultrasonography is an important tool for the non-invasive assessment of psoriatic lesions. It ofers speciic markers related to morphology, elasticity and blood supply of the lesions, improving the diagnosis and monitoring of the skin and nail lesions.

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High-resolution ultrasound imaging of cutaneous lesions

Cited by 95 publications

References 39 publications

Doppler ultrasound and strain elastography in the assessment of cutaneous melanoma: preliminary results

Doppler ultrasound and strain elastography in the assessment of cutaneous melanoma: preliminary results

Automated classification of common skin lesions using bioinspired features

Ultrasonography as a New, Non-Invasive Imagistic Technique Used for the Diagnosis and Monitoring of Psoriasis

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