Therapeutic angiography and embolisation for bleeding aberrant duodenal artery arising from replaced hepatic artery.

We present a rare case of a 70-year-old man with a known case of hypertension and carcinoma larynx, he was admitted under ENT (ear, nose and throat) services for a laryngectomy. On admission, he started having severe per rectal bleeding. The patient underwent a number of radiological investigations to determine the origin of the bleed, including Tc 99 m labelled red blood cells tagged scan, a CT scan and two angiographies.

Naeglaeria infection of the central nervous system, CT scan findings: a case series.

The imaging findings in four cases of a rare infection of the central nervous system caused by amoebae, Naeglaeria fowleri are presented. Naeglaeria fowleri are pathogenic free-living amoebae. They cause primary amoebic meningoencephalitis (PAM), a rapidly fatal disease of the central nervous system.

A descriptive study to find possible correlation between MRI findings of pituitary gland and serum prolactin level.

Objective: To explore equation, if any, between findings of magnetic resonance imaging of pituitary gland and serum prolactin level.

Methods: The retrospective, descriptive study was conducted at the Department of Radiology, Aga Khan University Hospital, Karachi, and related to patients' records from April 19, 2006 to April 23, 2009. Seventy patients underwent magnetic resonance imaging of brain for pituitary gland.

Posterior reversible encephalopathy syndrome.

Objective: To evaluate the Magnetic Resonauce Imaging (MRI) features in patients having Posterior Reversible Encephalopathy Syndrome.

Methods: This is a retrospective study from 8th June 2005 to 26th July 2009. Twelve patients were included who were confirmed to have Posterior Reversible Encephalopathy Syndrome, per imaging and clinical follow-up.

MRI findings in methanol intoxication: a report of three cases.

Methanol is a highly toxic substance and acute methanol poisoning produces severe metabolic acidosis and serious neurological symptoms, including severe visual impairment, extrapyramidal signs and coma. We present three cases of accidental methanol intoxication and discuss the MRI findings.

Magnetic resonance imaging of metronidazole induced encephalopathy.

We describe a case demonstrating Magnetic Resonance (MR) imaging findings in association with Metronidazole (Flagyl) toxicity. MRI brain showed abnormal signal intensity involving dentate nuclei of cerebellum bilaterally symmetrical. The diagnosis of metronidazole toxicity was made by the MR imaging findings and supported clinically.

Observer variation in MRI evaluation of patients with suspected lumbar disc herniation and nerve root compression: comparison of neuroradiologist and neurosurgeon's interpretations.

Objective: To analyse inter-observer variation between a neuroradiologist and neurosurgeon in the MRI diagnosis of lumbar nerve root compression. Although lumbar MFI is primarily analyzed and reported by a radiologist, neurosurgeons often analyse it independently as they have sufficient clinical background as well as radiological expertise to diagnose most spinal pathologies on Magnetic Resonance Imaging (MRI).

Methods: Retrospective analysis was carried out for images of 54 patients who underwent MRI between March and July 2010 of lumbar spine with suspected lumbar disc herniation and nerve root compression, at Aga Khan Hospital, Karachi, Pakistan.

Neurosarcoidosis.

We report a case of Neurosarcoidosis in absence of pulmonary features. It is estimated that less than 1% of patients have an isolated CNS involvement, without systemic evidence of disease. This case also had an unusual clinical presentation.

Solitary metastasis of breast carcinoma in the infundibulum.

We present a rare case of a 59 years old women who had been treated for breast cancer. Post Contrast T1-weighted MR images revealed a tiny nodular enhancing lesion in the infundibulum, consistent with metastasis.

Cerebral nocardiosis.

Localized and multisystem nocardiosis is an opportunistic disease that occurs commonly in immunocompromised patients. Rarely, it is also seen in immunocompetent individuals. The most common disease sites include lung, skin and central nervous system.

Spinal changes in patients with ankylosing spondylitis on MRI: case series.

Magnetic Resonance Imaging appearances are described in three cases of Ankylosing Spondylitis (AS). The different appearances of AS on magnetic resonance imaging are described and their significance in relation to the pathology of this condition is discussed. MRI is increasingly used to detect changes in the spine of patients with AS.

Central nervous system involvement in multiple myeloma.

Involvement of the central nervous system by multiple myeloma (MM) is considered to be extremely rare. Magnetic Resonauce Imaging (MRI) is the imaging modality of choice to detect and differentiate myeloma at unusual sites. We present the case of a sixty-year-old man who was a known case of MM.

Posterior reversible encephalopathy syndrome: a case series in patients with eclampsia.

Posterior Reversible Encephalopathy Syndrome (PRES) refers to a clinicoradiologic entity with characteristic features on neuro-imaging and non-specific symptoms comprising headache, confusion, visual disturbances and seizures. The lesions in PRES are thought to be due to vasogenic oedema, predominantly in the posterior cerebral hemispheres, and are reversible with appropriate management. We report 3 cases of acute PRES who had eclampsia and presented with recurrent episodes of seizures and hypertension.

Cerebral toxoplasmosis in a patient with acquired immunodeficiency syndrome.

Cerebral toxoplasmosis commonly affects patients with advanced HIV immunodeficiency. Toxoplasmosis in patients who are immunocompromised can be severe and debilitating in patients with Central Nervous System (CNS) involvement and the condition may be fatal. We report the case of a 40-year-old man who was a known case of HIV and presented with cerebral toxoplasmosis.