Related Experiment Video
Updated: Oct 9, 2025

The Supraclavicular Fossa Ultrasound View for Central Venous Catheter Placement and Catheter Change Over Guidewire
Published on: December 23, 2014
A mysterious clavicular swelling
Nur Saadah Mohamad1,2, Mohd Jazman Che Rahim3,4, Azliana Aziz5,2
1MD, Department of Otorhinolaryngology- Head & Neck Surgery, School of Medical Sciences, Universiti Sains Malaysia, Kelantan, Malaysia.
Abstract:
The clavicle or collarbone is a horizontal-axis bony structure located between the neck and thoracic area. Tumour metastasis at the clavicle is very rare. Due to its location at the border of the neck and chest area, a primary tumour could originate from both areas. We report the case of a 39-year-old man who presented with a painful right sternal-end clavicular mass and intermittent fever. Chest radiography was normal. Musculoskeletal ultrasound of the clavicle revealed a mass. Computed tomography (CT) thorax further identified a mass at the upper lobe of the right lung. CT-guided tissue biopsy confirmed that it was a lung adenocarcinoma. This case shows an atypical presentation of lung carcinoma and how musculoskeletal ultrasound helped in the diagnosis when other features and investigations were inconclusive.
Related Concept Videos
Changes in the Appendicular Skeleton with Age
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...
Flail Chest-I
Flail chest is a severe and potentially life-threatening condition characterized by the fracture of three or more adjacent ribs in multiple places. It is most commonly caused by direct impacts and trauma, such as motor vehicle accidents or injuries from a steering wheel impact. It can also occur due to falls in elderly individuals with osteoporosis, or assaults involving sharp objects.
Pathophysiology
The pathophysiology of flail chest is complex, involving fractures of...
Cardiovascular System Abnormal Findings I: Inspection and Palpation
Abnormal findings observed during an inspection
Pericarditis II: Clinical Features and Diagnostic Tests
Cardiovascular System Abnormal Findings II: Auscultation
Abnormal Heart Sounds
Gallops:
Assessment of the Cardiovascular System III: Palpation
Jugular Venous Pressure (JVP) Measurement
Position the patient at a thirty- to forty-five-degree angle or in a semi-fowler's position. Look for the highest point of pulsation in the internal jugular vein and measure the vertical distance to the angle of Loius or sternal angle. A normal JVP is 3-4 cm above...

