7,879 results found
Article
Retinoblastoma
Retinoblastomas are the most common intraocular neoplasm found in childhood and with modern treatment modalities, are, in most cases, curable.
On imaging, they are generally characterised by a heterogeneous retinal mass with calcifications, necrotic components and increased vascularisation on D...
Article
Accessory nerve
The accessory nerve, also called the spinal accessory nerve, or historically, the nerve of Willis, is the eleventh cranial nerve (CN XI) and is composed of two parts, the cranial part and the spinal part (TA: nervus accessorius or nervus cranialis XI).
Connections and course
The cranial part (...
Case
Subgaleal dermoid cyst
Published
02 Dec 2022
71% complete
CT
Ultrasound
Article
Trigeminal radiofrequency ablation
Trigeminal radiofrequency ablation, also known as trigeminal radiofrequency rhizotomy, is a percutaneous interventional procedure used to treat trigeminal neuralgia. It is the most popular technique for trigeminal ablation.
Indications
trigeminal neuralgia resistant to traditional medical trea...
Case
Adenoidal and tonsillar hypertrophy
Published
04 Feb 2023
82% complete
X-ray
Article
Isthmus (disambiguation)
Isthmus (plural: isthmi) is an anatomical term and refers to a slender structure joining two larger components. Some of these uses of the word isthmus are now rarely used or only seen in older texts and articles:
isthmus (aorta)
isthmus (auditory tube)
isthmus (auricle of the ear)
isthmus (c...
Article
Oropharyngeal isthmus
The oropharyngeal isthmus, a.k.a. isthmus of fauces, is the relative constriction of the anterior oropharynx that borders the oral cavity. The isthmus is sometimes described as the passage that transitions between the oral cavity and pharynx, but strictly speaking, it is part of the oropharynx.
...
Article
Optic disc drusen
Optic disc drusen (ODD), or hyaline bodies, are a relatively common entity usually found incidentally on CT or on follow-up of abnormal fundoscopy.
Epidemiology
Optic disc drusen are identified radiographically in up to 0.3-3.7% of the population and are frequently bilateral 1,4,5. They are ty...
Article
Intraconal orbital lesions
Intraconal orbital lesions are broadly divided into two main groups; those with or without involvement of the optic nerves.
Lesions with optic nerve involvement:
optic nerve glioma
optic nerve meningioma
optic neuritis
pseudotumour
lymphoma and leukaemia
intracranial hypertension
retinob...
Article
Buccolabial muscles
The buccolabial muscles form a subgroup of the facial muscles.
Elevators, retractors and evertors of the upper lip:
levator labii superioris alaeque nasalis (LLSAN) muscle
levator labii superioris muscle
zygomaticus major muscle
zygomaticus minor muscle
malaris muscle
levator anguli oris...
Case
Fibromuscular dysplasia (FMD) of internal carotid arteries
Published
17 Jan 2021
95% complete
CT
Article
Cherubism
Cherubism has historically been considered a variant of fibrous dysplasia, but is likely a distinct entity.
Epidemiology
Cherubism is a rare disorder and the precise incidence is unknown. It is inherited in an autosomal dominant pattern 2 and has variable penetrance, with onset in early child...
Article
Haemotympanum
Haemotympanum is the presence of blood in the middle ear cavity. It is usually secondary to trauma.
Clinical presentation
Typically on otoscopy a bulging red to purple to dark blue coloured tympanic membrane is visible, colour varying with age of the haemorrhage.
Pathology
The haemorrhage h...
Article
Facial muscles
The facial muscles, also known as the muscles of facial expression or mimetic muscles (TA: musculi faciales), enable facial expression and serve as sphincters and dilators of the orifices of the face. These muscles differ from those of other regions in the body as there is no fascia deep to the ...
Case
Allergic fungal sinusitis
Published
20 Feb 2021
71% complete
CT
Article
Congenital infiltrating lipomatosis of the face
Congenital infiltrating lipomatosis of the face is a very rare congenital, non-hereditary disease manifesting with prominent unilateral facial overgrowth and deformity.
Clinical presentation
Facial asymmetry is always noted at birth. Other findings on the affected side include:
unilateral ske...
Article
Stab wound (overview)
Stab wounds are a form of penetrating trauma that may be self-inflicted or inflicted by another person either accidentally or intentionally. They may be caused by a variety of objects and may occur anywhere in the body.
Terminology
Although commonly caused by a knife as well, slash injuries di...
Case
External auditory canal cholesteatoma
Published
01 Dec 2020
68% complete
CT
Case
Giraffe (photo)
Published
10 May 2019
29% complete
Photo
Case
Malignant schwannoma
Published
23 Jun 2015
92% complete
CT
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