Journal of Medical Ultrasound最新文献

Background: Breast cancer is the most common malignancy affecting women all over the world and represents 7% of all cancer-related deaths in the UK. One of the most crucial elements in assessing a patient's prognosis and chance of survival with breast cancer is the condition of their axillary lymph nodes. Ultrasonography (US) is now used as a routine preoperative diagnostic tool for pretherapeutic axillary evaluation. The aim of the current study is to investigate the diagnostic accuracy of US in axillary staging in breast cancer patients.

Methods: We carried out this retrospective study for all invasive breast cancer patients who had surgery in addition to preoperative axillary staging using US during the period from January 2020 to February 2021. The final histology results were compared with the preoperative US findings to ascertain the sensitivity, specificity, positive predictive value, and negative predictive value of AUS in axillary staging.

Results: One hundred and twenty-eight patients were included in our study. The average age of diagnosis was 63.9 ± 12.3 years of age. We calculated sensitivity rate of 59.6%, specificity rate of 95.1%, positive predictive value of 87.5%, and negative predictive value of 80.2% with overall diagnostic accuracy of 82.2%.

Conclusion: Despite the important role of preoperative US in axillary staging in breast cancer patients; it failed to detect metastatic diseases in 14.8% of our patients. These findings necessitate the routine histological evaluation of the axilla for more accurate staging of the disease.

Advanced cross-sectional imaging techniques are firmly established as a means of evaluating musculoskeletal disease, and ultrasound (US) is increasingly being used for the assessment of a diversity of tendon, joint, and soft-tissue abnormalities. A benign condition - bizarre parosteal osteochondromatous proliferation (BPOP) - arises from the periosteum, typically in the small bones of the hands and feet, and grows as a surface bone lesion in the surrounding soft tissue. Proliferations can become symptomatic, exercising mass effect on adjacent structures that may require operative management. As a bone-forming process, BPOP may occasionally assume worrisome histologic features that mimic sarcoma, and a pronounced tendency to recur after primary excision. A solitary mass was growing in the middle finger of a young woman that curtailed proper hand function. With US, a partially ossified formation was revealed in the proximal phalanx situated on the outer surface of the bone. There was faint acoustic shadowing distal to the lesion, and a hypoechoic halo was seen covering part of the abnormal tissue growth. Importantly, the lesion caused significant limitation of motion of the finger, on the dynamic flexion US images with the displacement of the flexor tendon and compression of a digital nerve. To restore the range of motion in the finger, surgical excision of the juxtacortical mass was performed and histology yielded a diagnosis of BPOP. We describe the US features of digital BPOP, which were found to correspond closely to those of computed tomography and magnetic resonance imaging.

Septal reduction therapy (SRT) is indicated for drug-refractory hypertrophic obstructive cardiomyopathy (HOCM). SRT includes surgical myectomy and alcohol septal ablation (ASA). The outcome between SRTs are similar except complete atrioventricular (AV) block. Intracoronary myocardial contrast echocardiography is used to minimize myocardial damage by ASA. We report a case of 40-year-old male who was diagnosed of HOCM with progressed symptoms under optimal medication. Echocardiography revealed peak velocity cross left ventricular outflow tract (LVOT) 5.3 m/s, systolic anterior motion (SAM) of mitral valve with eccentric mitral regurgitation (MR) and interventricular septal thickness 16 mm. Alcohol (99.5%) 1.5 mL was injected into the first small branch of the first septal artery, under precise localization by intracoronary myocardial contrast echocardiography. The pressure gradient of apex-LVOT-aorta reduced from 90 to 20 mmHg after ASA. No AV block was noted after the procedure and echocardiography revealed improved peak velocity cross LVOT and interventricular septal thickness. No more SAM or eccentric MR was observed. Previous studies recommended ASA reserved for patients with higher surgical risk and severe comorbidities. However, a recent study showed that young adults had better long-term survival and only one-half pacemaker implantation rate than older group following ASA. Under the guidance of intracoronary myocardial contrast, target vessel could be precisely localized to small branch from a septal artery to decrease myocardial damage. Therefore, ASA may be considered as the first-line SRT for symptomatic HOCM due to minimal invasiveness and effective outcome.

Background: Diabetes mellitus (DM) can contribute to the development of foot ulcers, a known complication of DM with a high financial and social burden. Achilles tendon (AT) and plantar fascia (PF) are well known to play an important role in foot biomechanics. The present study focuses on the alteration in thickness and stiffness of the AT and PF in Type 2 DM patients compared with the normal controls.

Methods: A cross-sectional observational study was conducted with 55 DM patients and 55 healthy volunteers as controls. The thickness of the AT and PF were measured using B-mode ultrasound and stiffness was measured using shear wave elastography. Both the thickness and stiffness in the patient group and controls were compared. The values were also compared with the clinical and demographic profiles of the patients.

Results: DM patients had considerably thicker AT and PF than controls (P < 0.05); mean values of AT thickness for DM patients and controls were 5.66 ± 0.54 mm and 4.61 ± 0.39 mm, respectively, and for PF were 2.53 ± 0.51 mm and 1.97 ± 0.19 mm, respectively. Furthermore, the stiffness of AT and PF was significantly (P < 0.05) lower in DM patients compared to controls, suggestive of softening of AT and PF in Type 2 DM patients. Mean values of shear wave velocity for DM patients and controls in AT were 5.53 ± 0.54 m/s and 7.25 ± 0.61 m/s, respectively, and for PF, 4.53 ± 0.89 m/s and 6.28 ± 0.88 m/s, respectively.

Conclusion: We conclude that there is softening and thickening of the AT and PF in Type 2 DM patients, which can impair foot biomechanics.

Acute dyspnea is one of the most common complaints in any emergency department. Physical examination and chest radiography have been insufficient to diagnose these patients accurately and quickly. We present a clinical case of a dyspneic patient presenting to the emergency department, who was promptly diagnosed with lobar pneumonia by point-of-care pulmonary ultrasonography. This permitted the rapid onset of adequate treatment. Furthermore, we describe a dynamic air bronchogram sign in a noninvasive ventilated patient. Chest computed tomography scan was performed confirming consolidation of the middle lobe. The advent of handheld point-of-care ultrasonography is revolutionizing practical care enabling physicians with a high-accuracy, low-cost, fast, safe, and repeatable diagnostic tool.

Evoked motor responses (distal muscle responses) to a specific nerve stimulation are considered an endpoint. Often in crush injuries of the upper limb below the level of the elbow, the distal muscle responses are irrelevant. We report 14 cases of crush injuries of the upper limb that underwent an amputation below the level of the elbow. A parasagittal ultrasound-guided infraclavicular block without neurostimulation was administered in all patients. A reliable local anesthetic (LA) spread either in the perineural or perivascular area is considered adequate. Adequate intraoperative anesthesia and postoperative analgesia were achieved with the deposition of LA beneath the axillary artery.

Lemmel's syndrome is a bile duct disease caused by periampullary duodenal diverticula that develop within 2-3 cm of the Vater papilla. This disease manifests itself as nonobstructive jaundice. In most cases, duodenal diverticula do not cause disease, and only in a small percentage of patients, diverticula cause biliary tract obstruction by extrinsic compression. If the compression is severe, in the long term, it can become complicated with lithiasis and cholangitis. Diagnosis is very difficult, and recurrent biliary symptoms must be directly related to the compression of the duodenal diverticula. Imaging is essential for differential diagnosis and includes conventional contrast radiographs, endoscopic retrograde cholangiopancreatography, computed tomography, and magnetic resonance imaging. The investigations show the dilation of the intra- and extra-hepatic bile ducts in the absence of lithiasis or main pancreatic duct dilatation, compressed by the diverticula, which most frequently originate from the medial wall of the second duodenal tract. The treatment of choice is surgical with removal of the diverticula. Failure to diagnose can cause serious health complications for the patient.

Congenital ectopic bilateral parotid glands are extremely rare, to date only two cases have been reported in the literature. Our patient, a 5-day-old male, presented with bilateral palpable cheek swelling. On imaging, the absence of bilateral parotid glands in parotid space and their ectopic location, anterior to the masseter muscle, was seen. Our case emphasizes ectopic parotids as an important differential among conditions presenting with bilateral cheek swelling in children. We have also compared the findings of previously described cases and their management with our case.

The axillary tail, also known as spencer's tail or axillary process, is a continuation of tissue from the upper lateral quadrant of the breast that travels into the axilla through a foramen of Langer in the deep fascia. Axillary inflammation or lump is a typical clinical symptom that necessitates imaging evaluation. Since the axilla consists of lymph nodes as well as nonlymphatic tissue such as accessory breast tissue, skin, fat, muscles, nerves, and blood vessels, it has a wide variety of differential diagnoses. The radiologists should be well acquainted with axillary anatomy and imaging aspects of various axillary lesions. Here, we present a 35-year-old female with a right axillary lump which was suggestive of benign tumor on ultrasonography and was proven to be benign phyllodes tumor on histopathology.