Articles

Articles are a collaborative effort to provide a single canonical page on all topics relevant to the practice of radiology. As such, articles are written and edited by countless contributing members over a period of time. A global group of dedicated editors oversee accuracy, consulting with expert advisers, and constantly reviewing additions.

7 results found
Article

Jaffe-Campanacci syndrome

Jaffe-Campanacci syndrome is characterised by: multiple non-ossifying fibromas of the long bones and jaw café au lait spots intellectual disability kyphoscoliosis hypogonadism or cryptorchidism ocular malformations cardiovascular malformations giant cell granuloma of the jaw Differentia...
Article

Jod-Basedow phenomenon

Jod-Basedow phenomenon is hyperthyroidism following iodine intake in a person with long term underlying thyroid disease. Pathology Jod-Basedow phenomenon occurs due to either overactivation of the entire thyroid gland, or more commonly autonomous nodules within the gland after iodine repletion...
Article

Jugular foramen

The jugular foramen courses anteriorly, laterally, and inferiorly as it insinuates itself between the petrous temporal bone and the occipital bone. Gross anatomy The jugular foramen is usually described as being divided into two parts by a fibrous or bony septum, called the jugular spine, into...
Article

Jugular fossa

The jugular fossa is a depression situated on the inferior surface of petrous temporal bone posterior to the inferior opening of carotid canal. It lodges the jugular bulb. Anteriorly, lies the jugular foramen. Related pathology glomus jugulare is the most common tumour of jugular fossa
Article

Jugular fossa masses

Jugular fossa masses comprise a range of pathological lesions that arise from or extend into the jugular fossa in the skull base. Although not a common location for tumours it is not unusual for jugular fossa lesions to be discovered incidentally on cross sectional imaging. Terminology Althoug...
Article

Jugular spine

The jugular spine is a small sharp bony ledge which separates the two parts of the jugular foramen - pars nervosa anteriorly and pars vascularis posteriorly. It is an important landmark, as masses of the jugular foramen (e.g. glomus jugulare) will erode this spine, helping distinguish them from ...
Article

Juvenile nasopharyngeal angiofibroma

Juvenile nasopharyngeal angiofibromas (JNA) are a rare benign but locally aggressive vascular tumour. Epidemiology Juvenile nasopharyngeal angiofibromas occur almost exclusively in males and usually in adolescence (~15 years). They account for only 0.5% of all head and neck tumours 2, but are ...

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