Unusual CT-dense posterior fossa epidermoid cyst

1981 ◽  
Vol 55 (4) ◽  
pp. 654-656 ◽  
Author(s):  
Robert C. Dunn ◽  
Carol A. Archer ◽  
Richard L. Rapport ◽  
L. M. Looi
Keyword(s):  
Posterior Fossa ◽  
Epidermoid Cyst ◽  
Unusual Case ◽  
Content Type ◽  
Radiological Features ◽  
Fine Print

✓ A posterior fossa epidermoid cyst with high computerized tomographic attenuation is reported. The pathological and radiological features of this unusual case are presented.

Intradiploic epidermoid cyst of the occipital bone with torcular obstruction

1978 ◽  
Vol 48 (3) ◽  
pp. 475-478 ◽  
Author(s):  
Setti Rengachary ◽  
Pulla R. S. Kishore ◽  
Itaru Watanabe
Keyword(s):  
Posterior Fossa ◽  
Epidermoid Cyst ◽  
Occipital Bone ◽  
Content Type ◽  
Fine Print

✓ The authors describe a patient with a giant occipital intradiploic epidermoid cyst with compression of the torcular and other posterior fossa structures.

An unusual middle fossa interdural epidermoid tumor

2001 ◽  
Vol 95 (5) ◽  
pp. 902-904 ◽  
Author(s):  
Yuichi Inoue ◽  
Kenji Ohata ◽  
Keiko Nakayama ◽  
Tomoko Haba ◽  
Miyuki Shakudo
Keyword(s):  
Magnetic Resonance ◽  
Computerized Tomography ◽  
Epidermoid Cyst ◽  
Unusual Case ◽  
Subtotal Resection ◽  
Middle Fossa ◽  
Content Type ◽  
Epidermoid Tumor ◽  
Fine Print

✓ The authors report an unusual case of an intracranial, interdural epidermoid tumor and cyst in a 72-year-old woman who presented with longstanding, mild numbness over her right cheek. She was initially treated conservatively, but on follow-up review the mass was found to have grown and evidence of hemorrhage was present, and therefore a subtotal resection was performed. This case should probably be classified as a paratrigeminal, interdural epidermoid cyst; this is the first known report in which magnetic resonance and computerized tomography images of such an entity are presented and discussed.

South American blastomycosis presenting as a posterior fossa tumor

1978 ◽  
Vol 49 (3) ◽  
pp. 425-428 ◽  
Author(s):  
João C. Araujo ◽  
Lineu Werneck ◽  
Marco A. Cravo
Keyword(s):  
Central Nervous System ◽  
Posterior Fossa ◽  
Unusual Case ◽  
Posterior Fossa Tumor ◽  
South American ◽  
Pertinent Literature ◽  
Content Type ◽  
South American Blastomycosis ◽  
The Central Nervous System ◽  
Fine Print

✓ An unusual case of infection of the central nervous system by Paracoccidioides braziliensis, presenting as posterior fossa tumor, is discussed and the pertinent literature reviewed.

Air embolism from wounds from a pin-type head-holder as a complication of posterior fossa surgery in the sitting position

1981 ◽  
Vol 55 (1) ◽  
pp. 147-148 ◽  
Author(s):  
José M. Cabezudo ◽  
Fernando Gilsanz ◽  
Jesús Vaquero ◽  
Eduardo Areitio ◽  
Roberto Martinez
Keyword(s):  
Posterior Fossa ◽  
Supine Position ◽  
Unusual Case ◽  
Air Embolism ◽  
Posterior Fossa Surgery ◽  
Sitting Position ◽  
Fixation Device ◽  
Content Type ◽  
Head Holder ◽  
Fine Print

✓ The authors report an unusual case of intraoperative air embolism during posterior fossa surgery in the sitting position. The source of air was one of the wounds made by the pin-type skull fixation device. We suggest that the patients should not be released from such device until they are in the supine position.

Arteriovenous malformations in the posterior fossa

1977 ◽  
Vol 47 (1) ◽  
pp. 50-56 ◽  
Author(s):  
Hiroshi Matsumura ◽  
Yasumasa Makita ◽  
Kuniyuki Someda ◽  
Akinori Kondo
Keyword(s):  
Arteriovenous Malformation ◽  
Brain Stem ◽  
Posterior Fossa ◽  
Arteriovenous Malformations ◽  
Cerebellopontine Angle ◽  
Anterior Part ◽  
Content Type ◽  
The Brain ◽  
Fine Print

✓ We have operated on 12 of 14 cases of arteriovenous malformation (AVM) in the posterior fossa since 1968, with one death. The lesions were in the cerebellum in 10 cases (three anteromedial, one central, three lateral, and three posteromedial), and in the cerebellopontine angle in two; in two cases the lesions were directly related to the brain stem. The AVM's in the anterior part of the cerebellum were operated on through a transtentorial occipital approach.

Bilateral trigeminal neuralgia: a 14-year experience with microvascular decompression

1988 ◽  
Vol 68 (4) ◽  
pp. 559-565 ◽  
Author(s):  
Ian F. Pollack ◽  
Peter J. Jannetta ◽  
David J. Bissonette
Keyword(s):  
Trigeminal Neuralgia ◽  
Posterior Fossa ◽  
Microvascular Decompression ◽  
Pain Control ◽  
Symptom Control ◽  
Sensory Loss ◽  
Content Type ◽  
Cranial Nerve Dysfunction ◽  
Ablative Procedures ◽  
Fine Print

✓ Thirty-five patients with trigeminal neuralgia (TN) bilaterally underwent posterior fossa microvascular decompression (MVD) between 1971 and 1984. They comprised 5.0% of a larger series of 699 patients with TN who underwent MVD during that interval. Compared to the subgroup of 664 patients with only unilateral symptoms, the population with bilateral TN included a greater percentage of females (74% vs. 58%, p < 0.1), a higher rate of “familial” TN (17% vs. 4.1%, p < 0.001), and an increased incidence of additional cranial nerve dysfunction (17% vs. 6.6%, p < 0.05) and hypertension (34% vs. 19%, p < 0.05). Of the 35 patients with bilateral TN, 10 underwent bilateral MVD (22 procedures) and 25 underwent unilateral MVD (30 procedures). In the latter patients, pain on the nonoperative side was well controlled with medication alone or had previously been treated by ablative procedures. Good or excellent pain control was achieved after one MVD was performed in 40 of the 45 sides treated (89%), and was maintained 1, 5, and 10 years after surgery in 82%, 66%, and 60%, respectively, based on life-table analysis. Six of 10 patients with recurrent symptoms underwent repeat unilateral MVD. Good or excellent long-term pain control was maintained in all six. With these repeat procedures included, symptom control at 1, 5, and 10 years after initial surgery was maintained in 87%, 78%, and 78% of the treated sides, respectively. Overall, 26 of 35 patients (74%) maintained good or excellent pain relief throughout the duration of the study (mean follow-up period 75 months) without resumption of regular medication usage. Although preoperative neurological deficits resulting from previous ablative procedures were seen in the majority of patients before MVD, no patient developed new major trigeminal sensory loss or masseter weakness after MVD. Operative mortality was zero. The results indicate that posterior fossa MVD is an effective and relatively safe treatment for the majority of patients with bilateral “idiopathic” TN, avoiding the risks of bilateral trigeminal nerve injury seen with other approaches.

Meningeal melanocytoma

1998 ◽  
Vol 88 (1) ◽  
pp. 116-121 ◽  
Author(s):  
David B. Clarke ◽  
Richard Leblanc ◽  
Gilles Bertrand ◽  
Gilbert R. C. Quartey ◽  
G. Jackson Snipes
Keyword(s):  
Histological Examination ◽  
Posterior Fossa ◽  
Clinical Presentation ◽  
Residual Tumor ◽  
Posterior Fossa Decompression ◽  
Content Type ◽  
Meningeal Melanocytoma ◽  
Radiological Appearance ◽  
Histological Features ◽  
Fine Print

✓ Meningeal melanocytomas are rare tumors of the central nervous system that are found almost exclusively in the posterior fossa and spinal cord and whose natural history is poorly defined. In this report, the authors review the clinical presentation, radiological appearance, operative findings, and histological features in two cases of meningeal melanocytoma: one cranial and one spinal. Two women, aged 21 and 30 years, were admitted to the hospital 60 years apart: the first because of progressive paraplegia and the second because of slowly progressive hearing loss. The first patient had an extradural tumor that was treated by laminectomy, subtotal resection, and postoperative radiotherapy in 1936. Her symptoms recurred 16 years later and she underwent reoperation of the residual tumor, which was found to have an intradural component. The authors' patient, who presented 60 years later, underwent plain and enhanced computerized tomography and magnetic resonance imaging that demonstrated a large posterior fossa lesion indicative of either an acoustic neuroma or a meningioma. She underwent posterior fossa decompression but only partial excision of the tumor could be accomplished because vigorous bleeding limited the extent of the resection. Surgery was followed by radiotherapy. The residual tumor enlarged despite these measures and required repeated resection 6 months later. At the second operation the tumor was much less vascular, perhaps reflecting the effects of radiotherapy, and was removed almost entirely. The patient died 6 months later from an anticoagulant-related cerebellar hemorrhage. In both cases the lesions were jet black, and histological examination revealed melanin-containing hypercellular tumors with rare mitotic figures. Meningeal melanocytomas are being diagnosed with increased frequency in parallel with improvements in neuroimaging and clarification of histological features. Clinical presentation of patients with these tumors typically occurs in their fifth decade and women are affected twice as often as men. The posterior fossa lesions can mimic acoustic neuromas and meningiomas in location and radiological appearance; however, the internal auditory canal is normal. In the spine, meningeal melanocytomas present with the clinical features of myeloradiculopathy. Diagnosis is made intraoperatively from the gross, jet-black appearance of the tumor and from histological examination. Vascularity, size, and location may render complete resection unfeasible. Because of the tumor's propensity to recur, radiotherapy has been recommended but its role remains to be elucidated.

Intrasellar epidermoid cyst

1983 ◽  
Vol 58 (3) ◽  
pp. 411-415 ◽  
Author(s):  
James E. Boggan ◽  
Richard L. Davis ◽  
Greg Zorman ◽  
Charles B. Wilson
Keyword(s):  
Pituitary Adenoma ◽  
Epidermoid Cyst ◽  
Cystic Lesions ◽  
Sellar Region ◽  
Content Type ◽  
Fine Print

✓ The authors report the uncomplicated removal of an intrasellar epidermoid cyst that on presentation mimicked a pituitary adenoma. Current controversies regarding the differentiation of this cyst from other cystic lesions of the sellar region are reviewed.

Circumferential fracture of the skull base causing craniocervical dislocation

2002 ◽  
Vol 97 (1) ◽  
pp. 118-122 ◽  
Author(s):  
Ganesh Rao ◽  
Adam S. Arthur ◽  
Ronald I. Apfelbaum
Keyword(s):  
High Speed ◽  
Unusual Case ◽  
Motor Vehicle ◽  
Neurological Impairment ◽  
Craniocervical Junction ◽  
Motor Vehicle Accidents ◽  
Review Of The Literature ◽  
Content Type ◽  
Vehicle Accidents ◽  
Fine Print

✓ Fractures of the craniocervical junction are common in victims of high-speed motor vehicle accidents; indeed, injury to this area is often fatal. The authors present the unusual case of a young woman who sustained a circumferential fracture of the craniocervical junction. Despite significant trauma to this area, she suffered remarkably minor neurological impairment and made an excellent recovery. Her injuries, treatment, and outcome, as well as a review of the literature with regard to injuries at the craniocervical junction, are discussed.

Lead encephalopathy presenting as a posterior fossa mass

1986 ◽  
Vol 65 (5) ◽  
pp. 713-715 ◽  
Author(s):  
J. Frederick Harrington ◽  
Timothy B. Mapstone ◽  
Warren R. Selman ◽  
Pamela Galloway ◽  
Carl Bundschuh
Keyword(s):  
Computerized Tomography ◽  
Posterior Fossa ◽  
Content Type ◽  
Lead Encephalopathy ◽  
Fine Print

✓ A case of lead encephalopathy with clinical and computerized tomography evidence of a midline posterior fossa mass is presented. The pathophysiology and the predilection for posterior fossa involvement are discussed.

Sign in / Sign up

Export Citation Format

Share Document