• Flat tumors, termed en plaque, infiltrate the dura and grow as a thin carpet or sheet of tumor along the convexity dura, falx, or tentorium. (medscape.com)
  • With certain anatomic locations, other differential diagnoses should be considered, including vestibular schwannoma for cerebellopontine angle tumors, pituitary macroadenoma and craniopharyngioma for parasellar tumors, and chordoma/chondrosarcoma for masses around the clivus. (medscape.com)
  • These tumors have a high tendency to recur and there is high possibility of metastasis. (thieme-connect.com)
  • In addition to being invited world-wide to give lectures and seminars, he has given platform presentations on the topics of immunotherapy for brain tumors, neurosurgical techniques and management of brain tumors at the American Society of Clinical Oncologists, American Academy of Neurological Surgeons, Radiological Society of North America, Annual Symposium on Brain and Spine Metastases, Congress of Neurological Surgeons, and other meetings. (stanfordhealthcare.org)
  • Brain metastases are about 10 times more common than primary tumors. (msdmanuals.com)
  • Third ventricular, cerebellopontine angle, parenchymal, and even pineal region tumors have also been described. (radiopaedia.org)
  • A Case of Cerebellopontine Angle Epidermoid Tumors Presenting with Trigeminal Neuralgia. (uc.edu)
  • Dermoid cysts account for about 0.2 to 1.8% of all intracranial tumors and are commonly located in the cisternal spaces, mainly in the cerebellopontine angle and parasellar cisterns. (afpm.org.my)
  • The differential diagnosis for brain meningioma includes dural metastasis (with breast and prostate cancer being the most common primary malignancies), hemangiopericytoma, granulomatous disease (including sarcoidosis and tuberculosis), idiopathic hypertrophic pachymeningitis, extramedullary hematopoiesis, hemangioma, and dura/venous sinuses. (medscape.com)
  • Cutaneous squamous cell carcinoma is sometimes characterized by an increased risk of locoregional recurrence and occasionally distant metastasis. (actasdermo.org)
  • Within this range, there is complex decision making to maximize safe resection whilst minimizing morbidity which depends on two main factors: tumor type (influencing propensity for recurrence, metastasis, overall survival and the need for adjuvant therapies), and tumor location (proximity to eloquent areas of brain and vital neurovascular, or neuroendocrine structures). (frontiersin.org)
  • En ocasiones el carcinoma epidermoide cutáneo se caracteriza por tener un mayor riesgo de desarrollar recurrencia locorregional y ocasionalmente metástasis a distancia. (actasdermo.org)
  • Paraneoplastic Syndromes Paraneoplastic syndromes are symptoms that occur at sites distant from a tumor or its metastasis. (msdmanuals.com)
  • benign t. a t. that does not form metastases and does not invade and destroy adjacent normal tissue . (en-academic.com)
  • Patients with standard-risk medulloblastoma may have a more favorable prognosis because of the higher likelihood of complete tumor removal and the absence of metastasis. (neurosurgery.directory)
  • In contrast, high-risk patients may face a more challenging treatment course and potentially a poorer prognosis due to the presence of metastasis and the difficulty in achieving complete tumor resection. (neurosurgery.directory)
  • Metastasis: Standard-risk patients usually do not have evidence of metastasis, which means that the cancer cells have not spread from the primary tumor site in the cerebellum to other parts of the central nervous system (CNS) or outside the CNS. (neurosurgery.directory)
  • Magnetic resonance imaging (MRI) was suggestive of an extra-axial lesion in the left cerebellopontine angle extending into the middle cranial fossa, which was having high T1 and T2 signal loss with contrast enhancement. (thieme-connect.com)
  • Metastasis: High-risk patients typically have evidence of metastasis. (neurosurgery.directory)
  • Parameters determining frequency and intensity of pneumatocele in patients with cerebello-pontine angle tumor operated in sitting position. (edu.pl)
  • 35. Facial and cochlear nerve function after surgery of cerebellopontine angle meningiomas. (nih.gov)
  • The indications are neoplasms of the poste- rior cranial fossa and/or the cerebellopontine angle, like VIII cranial nerve schwannomas, meningiomas, epidermoid cysts, and metasta- ses, with or without internal auditory canal involvement with/with- out serviceable hearing, symptomatic neurovascular conflicts, or brainstem implant placement. (unibo.it)
  • [ 1 ] MRI more accurately evaluates en plaque and posterior fossa meningiomas, which may be missed on CT scanning. (medscape.com)
  • The pituitary surgery team deals with the clinical and scientific issues of sellar and perisellar processes - mainly pituitary adenoma, as well as colloid cysts, metastases, granulomas, chordomas, craniopharyngiomas and meningiomas. (uniklinik-freiburg.de)
  • Imaging revealed a 2.8-cm hemorrhagic left cerebellopontine angle lesion extending into the left internal auditory canal, consistent with hemorrhagic vestibular schwannoma. (thejns.org)
  • Figure 1, Figure 2, Figure 3, Figure 4, and Figure 5: Axial high resolution T2 fiesta images show a dilated and tortuous basilar artery which extends into the left cerebellopontine angle. (blogspot.com)
  • 34. Cavernous hemangiomas of the internal auditory canal and cerebellopontine angle. (nih.gov)
  • At the end of microscopic lesion removal, an angled optics is useful to help the surgeon dissect the pathology and remove the remnants with intrameatal extension inside the fundus of the internal auditory canal. (unibo.it)
  • Preoperative imaging included a full MRI of the spine, which revealed an intradural lesion that encased the distal sacral nerve roots at the tip of the thecal sac and was concerning for a drop metastasis. (thejns.org)
  • My wife received postoperative whole brain radiation therapy for a single brain metastasis in the Summer of 1998. (cancer.org)
  • Brain metastases are about 10 times more common than primary tumors. (msdmanuals.com)
  • 21. Cranial nerve root entry zone primary cerebellopontine angle gliomas: a rare and poorly recognized subset of extraparenchymal tumors. (nih.gov)
  • Many neoplasms such as gliomas or metastasis will have primarily T2 hyperintensity. (appliedradiology.com)
  • The retrosigmoid route represents one of the traditional surgical approaches to the posterior cranial fossa and, in particular, to the cerebellopontine angle. (unibo.it)
  • citation needed] The anterior inferior cerebellar artery (AICA) is the principal vessel of the cerebellopontine angle. (wikipedia.org)
  • In her case she developed metastatic recurrance as per Pet Scan of August 2000 showing abnormal foci of radiotracer accumulation within the right cerebellar hemisphere, right cerebellopontine angle, pons and base of the fourth ventricle consistent with new metastatic foci. (cancer.org)
  • Prolonged muscle movements, massage or capillary lumen, and failure of drugs or cerebello-pontine angle often our patients. (teenabortionissues.com)
  • Other important things to consider are the possibility to check the relationship of the pathology with the anatomical structures in the cerebellopontine angle at the beginning of the procedure and the great value of the angled optics (45-degree and 70-degree lenses) during the final check to control the radicality of the excision. (unibo.it)
  • Immunohistochemical staining (IHC) is a helpful tool for discriminate this pathology from the metastasis of other organs or meningioma. (e-roj.org)
  • 37. An uncommon case of lymphoplasmacytic lymphoma in cerebellopontine angle region: Case report with a literature review. (nih.gov)
  • The temporal bone may also be a site for metastasis from lymphoma or malignant tumors of the breast, lung, kidney, or prostate. (medscape.com)
  • This maneuver allows cerebrospinal fluid drainage, which is a key step to decompress the anatomical structures inside the cerebellopontine angle and to create enough space to work in this region. (unibo.it)
  • Tumour spread (metastasis) outside the CNS, for example into the lung and/or lymph nodes, is rare. (gpoh.de)
  • 31. Rare teratoma involving of the cerebellopontine angle: a case report and literature review. (nih.gov)
  • 38. Giant extra-axial cerebellopontine angle/cavernous sinus ependymoma: case report. (nih.gov)
  • As this disease has a high potency for metastasis, we advised four courses of single agent doxorubicin chemotherapy 75 mg/m 2 every 4 weeks starting one month after the end of radiotherapy. (e-roj.org)
  • cerebellopontine angle mass for a more complete differential. (pacs.de)