X-RAYA photographic or digital image of the

internal composition of something, especially a part of the body, produced by X-rays being passed through it and being absorbed to different degrees by different materials.

Primary cardiac tumours

Primary cardiac tumours are uncommon, and comprise only a small minority of all tumour that involve the heart: most are mediastinal or lung tumours which extend through the pericardium and into the heart, or metastases 

Primary cardiac tumours

Acute versus chronic ischaemic stroke

Differentiating between acute and chronic infarction on a CT brain is an important skill for many health professionals particularly in the emergency setting

Acute versus chronic ischaemic stroke

Basilar invaginationBasilar invagination, also called

basilar impression, is a congenital or acquired craniocervical junction abnormality where the tip of the odontoid process projects above the foramen magnum

Basilar invagination

Cervical ribCervical rib is a supernumerary or

accessory rib arising from the seventh cervical vertebra. They occur in ~0.5% of the population, and are more common in females.

Although cervical ribs are usually asymptomatic, they are the most important anatomic rib variant clinically, because they can cause thoracic outlet syndrome by compression of the brachial plexus or subclavian vessels.

Cervical rib

Chance fracture

Chance fractures are flexion-distraction type injuries of the spine that extend all the way through the spinal columns.

Chance fracture

Askin tumour

The original description of the Askin tumour (by Askin and Rosai in 1979 1), and many studies following it have led to a great deal of confusion. Until recently it has been considered a separate entity or as a type of peripheral primitive neuroectodermal tumour, usually of the the chest wall.

Askin tumour

Anteater nose sign

The anteater nose sign refers to an anterior tubular prolongation of the superior calcaneus which approaches or overlaps the navicular on a lateral radiograph of the foot. This fancifully resembles the nose of an anteater and is an indication of calcaneonavicular coalition.

Anteater nose sign

Anoxic brain injury

Anoxic brain injury, also known as global hypoxic-ischaemic injury, is seen in all age groups (from antenatal to the elderly) as a result of numerous aetiologies. The pattern of injury depends on a number of factors .

Anoxic brain injury

Articular pillar fractureThe articular processes are

projections from the junction of the pedicle and the lamina, bound superiorly and inferiorly by their smooth articulating facets. Fusion of the superior and inferior articular processes forms the articular pillar, or articular mass. The apposing articular facets form the apophyseal joint (synovial joint) that has a postero-inferior inclination of approximately 35 degrees

Articular pillar fracture

Adenocarcinoma of lung

Features here are of a solitary lung lesion at the right hilum proven to be adenocarcinoma after biopsy.

Adenocarcinoma of lung

Frontal Lateral

Accessory patellar ossification

An accessory patellar ossification centre at the inferior pole of the patella.

Accessory patellar ossification

Frontal Lateral

Achilles tendon tear

4th metacarpal fractureThe 4th metacarpal fracture isn't

apparent on the AP view: however, the lateral and the oblique view clearly demonstrate the fracture and its extent.