Role of ultrasound in the diagnosis of breast cancer

Background: Breast cancer is typically detected in women with a standard prevalence categorized by age of 80.1/100.000 people in the world. In Vietnam, the proportion for women was 17.4/100.000 people in 2000. The value of ultrasound has been acknowledged in the last few decades. However, there is an existing problem related to the proportion of inaccurate diagnosis (amounted to 10-20%), or suspect diagnosis. Thus, the diagnosis of breast cancer employing ultrasound (US) method not only overcomes the above obstacles, but also generates a number of advantages. \r\n', u'Objectives: To study the value of US and US lesions in the diagnostic for breast cancer. \r\n', u'Subjects and method: 621 patients with breast abnormalities were diagnosed and treated at K-hospital from 2003 to 2006. They underwent breast US scanning. The sonographic features were compared with pathologic results. \r\n', u'Results: Common signals of breast cancer: the mass of irregular shape: Se = 73.9%, Sp = 87; speculation margins: Se = 72.4%, Sp = 96.8%; hypoechoic mass: Se = 89.5%, Sp = 83.3%; heteroechoic density: Se = 98%, Sp = 68.5%. Other uncommon signals are: punctuate hyperechogenics of calcifications, acoustic shadow behinds the mass, the number of punctuate hyperechogenic > 5. The D/W index > 1: PPV = 95.9%. \r\n', u'Conclusion: Ultrasound is a valuable method for breast cancer diagnosis with Se = 89.47%, Sp = 86.49%, PPV = 92.96%, NPV = 83.72% and Acc = 88.41%.\r\n', u'

Stenosid of bifurcation of carotid - a comparison of images of ultrasound Doppler and angiography

A retrospective study on the 77 patients suspected the cerebral vascular lesions received the ultrasound Doppler and angiography to evaluated the stenosid of carotid of which 154 rounds of ultrasound and angiography for outer, inner and bifurcation of carotid. The results have shown that there was suitability between ultrasound and angiography in 100% cases of complete stenosid or nearly embolised stenosid. The false positive results of ultrasound occurred in 9 rounds for inner carotid stenosid, 4 rounds for outer carotid stenosid and 2 rounds for bifurcation of carotid. The false negative results occurred in the inner carotid, outer carotid and bifurcation of carotid was 5, 2 and 12 rounds.

Renal pedicular lesion - capacity of ultrasound and imaging diagnosis

A retrospective study on 7 patients with close renal trauma was carried out. The preoperative and postoperative ultrasound found that the patients experienced the renal pedicular lesion. 7/7 patients were in stable condition, and experienced the urination with diluted blood or without blood. 7/7 patients had ultrasonic images of mass blood clot in the postperitoneal that push the kidney into the front. The CT scanner can suggest the renal pedicular lesion. If there was the renal pedicular lesion in the CT scanner image, it should implement renal angiography.

The value of ultrasound in diagnosis of closed renal trauma

The study involved 63 patients (48 males, 15 females) aged from 10 to 64 years old with renal trauma who were undergoing operation at ViÖt Nam - Germany Hospital between 1/1991 and 7/1998. Direct and indirect signs of renal trauma and the value of ultrasound in evaluation and classification of damage were investigated. The results showed that ultrasound is a simple, non-invasive and harmless method. It provided high diagnostic value for most of signs of renal trauma such as change in shape, damage in tissue, kidney rupture and hematoma in post-peritoneal cavities. Ultrasound can also access closely to anatomical classification of renal trauma with high accuracy in diagnosis.

Value of ultrasound signs in classification of the renal damage and lesion

137 patients with blunt renal trauma were examined by the sonography which can classify exactly 86.2% of renal injuries. Signs of the deformed kidney, of renal contour discontinuation and of the retroperitoneal hematoma were significantly for classification of renal injuries