Related Experiment Videos
Cerebral aspergillosis presenting as a mass lesion
Negar Azarpira1, Majid Esfandiari, Mohamad Hadi Bagheri
1Transplant Research Center, Department of Pathology, Shiraz University of Medical Sciences, Shiraz, Iran. negarazarpira@yahoo.com
Summary
Central nervous system (CNS) fungal infections, like Aspergillus, are rare and mimic other conditions. This case highlights a fatal intracranial granuloma due to Aspergillus fumigatus, emphasizing diagnostic challenges.
Area of Science:
- Neurology
- Mycology
- Infectious Diseases
Background:
- Fungal infections of the central nervous system (CNS) are rare and often present subtly, mimicking pyogenic abscesses or brain tumors.
- Aspergillosis of the CNS is uncommon, primarily affecting immunocompromised individuals.
- It can manifest in various forms, including meningitis, mycotic aneurysms, infarcts, and tumoral presentations.
Observation:
- A case of intracranial granuloma caused by Aspergillus fumigatus involving the anterior cranial fossa and frontal lobe is reported.
- Clinical symptoms developed over a year prior to admission.
- Diagnosis was confirmed post-craniotomy.
Findings:
- The patient presented with an intracranial granuloma due to Aspergillus fumigatus.
- Treatment involved surgical excision and intravenous amphotericin B.
- Despite extensive treatment, the patient did not respond and ultimately died.
Implications:
- This case underscores the diagnostic difficulties and poor prognosis associated with CNS aspergillosis.
- Early and accurate diagnosis is crucial for effective management of these rare infections.
- Further research into novel therapeutic strategies for CNS fungal infections is warranted.
Related Concept Videos
Brain Abscess l: Introduction
A brain abscess is a focal, intracerebral infection characterized by a localized collection of pus within the brain parenchyma, resulting from microbial invasion and the body’s inflammatory response. It progresses through stages: early and late cerebritis, followed by early and late capsule formation, reflecting tissue destruction, immune response, and eventual encapsulation.Etiology and PathogenesisCausative organisms vary with source and host factors, often involving polymicrobial infections,...
Cryptococcal Meningitis
Cryptococcal meningitis is a life-threatening opportunistic infection predominantly associated with HIV/AIDS, accounting for over 100,000 deaths annually worldwide. However, it also affects individuals with other forms of immunosuppression, including those undergoing immunosuppressive therapy, organ transplant recipients, patients with innate immunodeficiencies, and individuals with hematological disorders. The infection is caused mainly by Cryptococcus neoformans and Cryptococcus gattii,...
Encephalitis l: Introduction
Encephalitis is inflammation of the brain parenchyma, most often due to infections or autoimmune processes. It presents with neuropsychiatric features such as fever, altered mental status, behavioral changes, cognitive dysfunction, seizures, focal deficits, and sometimes autonomic instability. In some cases, the meninges are also involved, resulting in meningoencephalitis.Infectious CausesInfectious encephalitis is most commonly viral but can also result from bacterial, fungal, or parasitic...
Cerebral Edema ll: Pathophysiology
Vasogenic edema is a major form of cerebral edema characterized by abnormal accumulation of fluid in the brain’s extracellular space due to disruption of the blood–brain barrier (BBB). The BBB is a specialized structure composed of endothelial cells connected by tight junctions, supported by astrocytic endfeet and a basement membrane. Under normal conditions, it tightly regulates the movement of ions, proteins, and solutes between the bloodstream and brain parenchyma. When this barrier loses...
Bacterial Meningitis I: Introduction
Bacterial meningitis is a severe, life-threatening inflammation of the meninges, particularly the pia mater and arachnoid mater, affecting the subarachnoid space, ventricles, and cerebrospinal fluid (CSF). If untreated, it can lead to significant neurological complications or death.Causative AgentsCommon pathogens vary with age and immune status. In adults, major organisms include Streptococcus pneumoniae, Neisseria meningitidis, and Haemophilus influenzae. Streptococcus agalactiae (group B...
Leishmaniasis
Leishmaniasis is a protozoal disease caused by species of the genus Leishmania and transmitted through the bite of infected female sandflies. The parasite exists in two principal morphological forms during its life cycle. A sandfly acquires intracellular amastigotes from an infected reservoir host, such as a dog. Within the sandfly, these forms differentiate into motile, flagellated promastigotes. During a subsequent blood meal, promastigotes are injected into the human host, where they...