Items tagged “cases”

4,573 results found
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Interstitial line sign

The interstitial line sign is an ultrasound finding in interstitial ectopic pregnancy. It is an echogenic line from the mass to the endometrial echo complex. Reportedly it has high sensitivity (80%) and specificity (98%).
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Intraosseous ganglion

An intraosseous ganglion is a benign subchondral radiolucent lesion without degenerative arthritis.  Epidemiology  Tends to occur in middle age. Clinical presentation Patients may have mild localised pain. Pathology They are uni-/multilocular cysts surrounded by a fibrous lining, containin...
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Iodophenylundecylic acid

Iodophenylundecylic acid (brand name = Myodil (Glaxo)) is an oily organic iodinated contrast material which was used for myelography. It is no longer used. Residual contrast remains for years. Has been implicated in development of arachnoiditis, perhapse of the order of 1%. See also pantopaque
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Kager's triangle

Kager's triangle is a sharply marginated radiolucent triangle seen posteriorly on lateral radiographs of the ankle. It represents the Kager fat pad. It is bordered anteriorly by the flexor hallucis longus (FHL) muscle and tendon, posteriorly by the Achilles tendon, and inferiorly by the calcane...
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Kasabach-Merritt syndrome

Kasabach-Merritt syndrome, also known as haemangioma thrombocytopaenia syndrome, is a rare life-threatening disease found in infants in which a rapidly growing vascular tumour is responsible for thrombocytopaenia, microangiopathic haemolytic anaemia and consumptive coagulopathy. Pathology Vasc...
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Kerr kink

Kerr kink a sign of renal tuberculosis. Scarring leads to a sharp kink at the pelvi-ureteric junction. History and etymology William "Bill" K Kerr, a Canadian urologist, described his eponymous sign in 1967 3.
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Kerr kink

Kerr kink a sign of renal tuberculosis. Scarring leads to a sharp kink at the pelvi-ureteric junction. History and etymology William "Bill" K Kerr, a Canadian urologist, described his eponymous sign in 1967 3.
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Kikuchi-Fujimoto disease

Kikuchi-Fujimoto disease (KFD) (also known as subacute necrotising lymphadenitis or subacute necrotising histiocytosis) is an idiopathic disease characterised usually by cervical lymph node enlargement (80%). Epidemiology It typically affects young women. Clinical presentation It usually pre...
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Kikuchi-Fujimoto disease

Kikuchi-Fujimoto disease (KFD) (also known as subacute necrotising lymphadenitis or subacute necrotising histiocytosis) is an idiopathic disease characterised usually by cervical lymph node enlargement (80%). Epidemiology It typically affects young women. Clinical presentation It usually pre...
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Kimura disease

Kimura disease is a rare benign inflammatory disease that characteristically manifests as enlargement of cervical lymph nodes and salivary glands. Epidemiology Kimura disease typically affects males (80%) between 20 and 40 years of age (80% of cases) 1-2, and is most frequently seen in Asia. S...
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Large intestine

The large intestine (or large bowel) is a 1.5 metre muscular tube that extends from the caecum to the rectum. It has three outer longitudinal muscular layers called taenia coli, which are about 30 cm shorter than the length of the large bowel causing characteristic sacculations interrupted by in...
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Laryngeal squamous cell carcinoma (staging)

Laryngeal squamous cell carcinoma staging uses the TNM staging system and actual staging is subsite (see laryngeal subsites) specific for T1-3. A rough approximation for all subsites is T1: limited to one subsite and normal cord mobility T2: more than one subsite and impaired cord mobility (bu...
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Lead poisoning

Lead poisoning or plumbism can present with characteristic skeletal features. Epidemiology This condition usually occurs as a consequence of a toxic environment: prolonged ingestion or inhalation of lead-containing material (e.g. contaminated water, paints, batteries). Pathology Lead accumul...
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Lemierre syndrome

Lemierre syndrome refers to thrombophlebitis of the jugular veins with distant metastatic sepsis in the setting of initial oropharyngeal infection such as pharyngitis/tonsillitis with or without peritonsillar or retropharyngeal abscess.   Clinical presentation Patients typically present unwell...
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Lemon sign (cerebellum)

The lemon sign, noted on antenatal imaging, is one of the many notable fruit inspired signs. It is a feature when there appears to be an indentation of the frontal bone (depicting that of a lemon). It is classically seen as a sign of a Chiari II malformation and also seen in the majority (90-98%...
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Lentiform nodule

The lentiform nodule (also known as the lenticular process) is the inferior most part of the incus which articulates with the head of the stapes.
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Lesser petrosal nerve

The lesser petrosal nerve carries parasympathetic (secretory) fibers from both the tympanic plexus and the nervus intermedius, to the parotid gland. The tympanic plexus arises from glossopharyngeal nerve (CN IX) via Jacobson's nerve. The lesser petrosal nerve originates at the geniculate gangli...
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Lipomatous hypertrophy of the inter-atrial septum

Lipomatous hypertrophy of the interatrial septum (LHIS) is a relatively uncommon disorder of the heart characterised by benign fatty infiltration of the interatrial septum. It is commonly found in elderly and obese patients as an asymptomatic incidentally discovered finding.  Epidemiology The ...
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Lithopaedion

Lithopaedions, also referred as stone babies, are a rare phenomenon which occurs most commonly when a fetus dies during an ectopic pregnancy. Epidemiology The estimated incidence is at ~ 1.5 to 1.8% of abdominal ectopic pregnancies 4. Pathology If the dead fetus is too large to be re-absorbe...
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Low endplate signal on T1

Several conditions may give vertebral endplate T1 low signal on MRI. They include:   ankylosing spondylitis vertebral metastases disc infection haemodialysis

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