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Increased Intracranial Pressure ll: Pathophysiology01:29

Increased Intracranial Pressure ll: Pathophysiology

Increased intracranial pressure (ICP) refers to a potentially life-threatening rise in pressure inside the skull. This usually happens when there is a major change in the volume of brain tissue, blood, or cerebrospinal fluid (CSF) — the three components inside the skull. According to the Monro-Kellie doctrine, if the volume of one component increases, the volumes of the other components must decrease to maintain normal pressure. If this does not happen, ICP rises.The process often begins with...
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Intracranial hypertension is a sustained elevation of intracranial pressure (ICP) above 22 mm Hg. In supine adults, normal ICP is ~7–15 mm Hg.The rigid, nonexpandable cranium contains three components—brain tissue, blood, and cerebrospinal fluid (CSF)—that total ~1,700 mL in a typical adult: 1,400 mL brain (~80%), 150 mL blood (~10%), and 150 mL CSF (~10%). According to the Monro–Kellie doctrine, total intracranial volume is effectively fixed. When one component expands, CSF and venous blood...
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Cranial Bones: Lateral View

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Cranial and Spinal Meninges01:19

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Role of Diffusion MRI Tractography in Endoscopic Endonasal Skull Base Surgery
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Craniopharyngioma.

Aldo C Stamm1, Eduardo Vellutini, Leonardo Balsalobre

  • 1São Paulo ENT Center, Professor Edmundo Vasconcelos Hospital, Rua Afonso Braz, 525, conj. 13. Vila Nova Conceição. CEP: 04511-011, São Paulo, Brazil.

Otolaryngologic Clinics of North America
|August 9, 2011
PubMed
Summary
This summary is machine-generated.

Craniopharyngiomas, rare tumors in the sellar/suprasellar region, are best treated with radical surgery. Endoscopic approaches improve outcomes by avoiding brain retraction and using vascularized flaps to prevent cerebrospinal fluid fistulas.

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Area of Science:

  • Neurosurgery
  • Endocrinology
  • Oncology

Background:

  • Craniopharyngiomas are rare epithelial tumors originating from the craniopharyngeal duct.
  • These tumors typically present in the sellar or suprasellar regions.
  • Commonly associated symptoms include neurological deficits, endocrine dysfunction, and visual impairment.

Purpose of the Study:

  • To review the current treatment strategies for craniopharyngiomas.
  • To highlight the efficacy and safety of the transnasal/transsphenoidal endoscopic approach.
  • To discuss advancements in cranial base reconstruction for preventing cerebrospinal fluid fistulas.

Main Methods:

  • Review of surgical techniques for craniopharyngioma resection.
  • Emphasis on the transnasal/transsphenoidal endoscopic approach.
  • Evaluation of reconstruction methods, including vascularized mucosal flaps.

Main Results:

  • Radical surgery remains the primary treatment modality for craniopharyngiomas.
  • The endoscopic endonasal approach allows tumor removal without brain retraction, preserving optic pathways.
  • Vascularized mucosal flaps have significantly reduced the incidence of cerebrospinal fluid fistulas.

Conclusions:

  • The transnasal/transsphenoidal endoscopic approach is a safe and effective method for craniopharyngioma resection.
  • Minimally invasive techniques and advanced reconstruction methods improve patient outcomes.
  • Further research should focus on optimizing surgical strategies and long-term management of craniopharyngiomas.