Ultrasound Imaging of Liver Tumors – Current Clinical Applications

Badea, R.; Ioaniţescu, Simona

doi:10.5772/31137

Cited by 12 publications

(12 citation statements)

References 62 publications

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“…A malignant lesion usually has a hypoechoic nature but has a variable acoustic mass by size. At less than 1cm in diameter, 92% of malignant lesions are hypoechoic, and for a diameter of less than 2 cm, this figure reduces to 60-80% [29]. When the mass is larger than 1.5cm, a clear moon halo shows that the periphery of the mass is more hypoechoic than the center of the mass, and this characteristic can be used to classify the focal liver lesions in the present study.…”

Section: Discussionmentioning

confidence: 62%

Classification of focal liver lesions on ultrasound images by extracting hybrid textural features and using an artificial neural network

Hwang

Lee

Kim

et al. 2015

BME

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Abstract. This paper focuses on the improvement of the diagnostic accuracy of focal liver lesions by quantifying the key features of cysts, hemangiomas, and malignant lesions on ultrasound images. The focal liver lesions were divided into 29 cysts, 37 hemangiomas, and 33 malignancies. A total of 42 hybrid textural features that composed of 5 first order statistics, 18 gray level co-occurrence matrices, 18 Law's, and echogenicity were extracted. A total of 29 key features that were selected by principal component analysis were used as a set of inputs for a feed-forward neural network. For each lesion, the performance of the diagnosis was evaluated by using the positive predictive value, negative predictive value, sensitivity, specificity, and accuracy. The results of the experiment indicate that the proposed method exhibits great performance, a high diagnosis accuracy of over 96% among all focal liver lesion groups (cyst vs. hemangioma, cyst vs. malignant, and hemangioma vs. malignant) on ultrasound images. The accuracy was slightly increased when echogenicity was included in the optimal feature set. These results indicate that it is possible for the proposed method to be applied clinically.

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Section: Discussionmentioning

confidence: 62%

Classification of focal liver lesions on ultrasound images by extracting hybrid textural features and using an artificial neural network

Hwang

Lee

Kim

et al. 2015

BME

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“…Kassarjian A et al [6] reported that radiological findings do not always reflect the true liver pathology and in a study that initially identified 62 children with radiological diagnoses of infantile hepatic haemagioendotheliomas, 3 had malignant tumours based on tissue pathology. Radu Badea et al [7] reported that in arterialised haemangiomas and those with arteriovenous shunts, differentiation from a malignant tumour based on ultrasonography is difficult.…”

Section: Discussionmentioning

confidence: 99%

Significance of Serum Alpha-Fetoprotein Levels in the Diagnosis and Prognosis of Paediatric Liver Tumours- A Study at Paediatric Referral Centre

Krishna¹,

Geetha²,

Fatima³

et al. 2018

jemds

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BACKGROUNDThere is a need for accurate diagnosis and preoperative evaluation of paediatric liver tumours, because treatment modalities and management protocols vary for benign and malignant tumours. There is a widespread notion that elevated AFP levels are suggestive of malignant liver tumours. However, in paediatric age group, serum AFP levels are normally higher than adults upto eight months of age. Preoperative evaluation involves radiology and serum AFP levels.So this study aims to study the AFP levels in both malignant and benign liver tumours and also understand if higher levels are seen in malignant liver tumours over their benign counterpart. MATERIALS AND METHODSA retrospective descriptive study of all the cases of paediatric liver tumours received at the Department of Pathology, Niloufer Hospital was done. Detailed clinical history, radiological investigations and serum AFP levels were recorded in all the cases. RESULTSThe hypothesis that benign paediatric liver tumours show normal-to-mildly elevated AFP levels did not correlate with our results. There was a very wide variation in elevation of AFP levels in all the cases. Both benign and malignant liver tumours showed similar percentage of elevation in AFP levels.

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“…Benign tumors can develop on a normal or steatotic liver, may be solitary or multiple, with increased echogenity (hemangiomas, focal nodular hyperplasia) or anechogenic, with posterior acoustic strengthening (serous cysts) and distinct contours (hydatid cysts), with no vascularization or characteristic circulatory pattern; may have a mass effect on liver structures or even adjacent organs. A characteristic for benign tumors is the fact that they have elastic consistency and do not invade vascular elements [20,21].…”

Section: Ious Of the Liver: Benign Tumorsmentioning

confidence: 99%

Intraoperative Ultrasound of the Liver: Actual Status and Indications

Bartoș¹,

Iancu²,

Breazu³

et al. 2018

Liver Research and Clinical Management

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Intraoperative liver ultrasound represents an essential component in the hepatobiliary surgery arsenal, having an essential role in describing liver lesions, their topography, and loco-regional extension. It also has an important role in establishing surgical strategy, in modulating the surgeon decisions, and thus in preventing postoperative complications. This chapter tries to make a synthetic review of principal indications for using ultrasound in liver surgical treatment, underlining the liver's lesions characteristics and advantages brought by this method. Also, we wanted to underline the importance that ultrasound has for guiding the surgeon in interventional intraoperative techniques or in any anatomical liver resection. The role of enhanced contrast intraoperative ultrasound is put in front by the better diagnostic results obtained for both primary and metastatic tumors of the liver.

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Ultrasound Imaging of Liver Tumors – Current Clinical Applications

Cited by 12 publications

References 62 publications

Classification of focal liver lesions on ultrasound images by extracting hybrid textural features and using an artificial neural network

Classification of focal liver lesions on ultrasound images by extracting hybrid textural features and using an artificial neural network

Significance of Serum Alpha-Fetoprotein Levels in the Diagnosis and Prognosis of Paediatric Liver Tumours- A Study at Paediatric Referral Centre

Intraoperative Ultrasound of the Liver: Actual Status and Indications

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