1: J Clin Neurosci. 2006 Mar 23; [Epub ahead of print]
Intraventricular epidermoids.
Meng L, Yuguang L, Shugan Z, Xingang L, Chengyuan W.
Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan 250012,
People's Republic of China.
To study the clinical characteristics of intraventricular epidermoids, we
analysed retrospectively 12 patients treated in our hospital and reviewed the
literature with regard to clinical manifestations, imaging features, diagnosis,
surgical procedures and prognosis. Four patients with lateral ventricle
epidermoid and eight in the fourth ventricle were included in this group.
Intraventricular epidermoids are characteristically hypodense non-enhancing
lesions on CT scans. MRI reveals them to have long T(1) and T(2) relaxation
times with slight mass effect. Total removal is ideal, but special attention
should be paid to preservation of important neurovascular structures. Close
proximity of tumours to cranial nerves and the brain stem pose technical
difficulties in total removal. Cranial nerve dysfunction and aseptic meningitis
are the main postoperative complications. Long-term prognosis for patients with
intraventricular epidermoids and well-preserved neurological conditions is good,
even in the case of subtotal excision. Clinical follow-up and MRI allow earlier
diagnosis of recurrence.
PMID: 16564173 [PubMed - as supplied by publisher]
2: J Clin Neurosci. 2005 Sep;12(7):784-6.
Cerebellopontine angle epidermoids presenting with trigeminal neuralgia.
Meng L, Yuguang L, Feng L, Wandong S, Shugan Z, Chengyuan W.
Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, PR
China.
We studied the clinical characteristics of cerebellopontine angle (CPA)
epidermoids presenting with trigeminal neuralgia (TN). Twenty-four patients were
analyzed retrospectively and the literature reviewed with regard to clinical
manifestation, imaging features, surgical procedures and prognosis. TN may be
the initial symptom of CPA epidermoid, particularly in young patients.
Epidermoids are characteristically hypodense nonenhancing lesions on CT scans,
while on MRI they exhibit long T1 and T2 relaxation times. Although complete
removal is ideal in the surgical management of CPA epidermoid, proximity to
cranial nerves and the brain stem may pose technical difficulties in complete
resection. In addition to complete resection of the tumour, arterial compression
at the root entry zone (REZ) of the trigeminal nerve should be sought, and if
found, a microvascular decompression (MVD) should be performed. Cranial nerve
dysfunction and aseptic meningitis are the most common operative complications.
PMID: 16150598 [PubMed - in process]
3: J Clin Neurosci. 2005 Apr;12(3):256-60.
Neuroendoscopic anatomy and surgery of the cerebellopontine angle.
Yuguang L, Chengyuan W, Meng L, Shugan Z, Wandong S, Gang L, Xingang L.
Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, PR
China.
liuyuguang3000@hotmail.comTo probe the feasibility and utility of neuroendoscopic inspection of the
anatomy of the cerebellopontine angle (CPA) and of neuroendoscopic assisted
microneurosurgery (NEAMN) for CPA lesions via a retrosigmoid approach, we used
retrosigmoid NEAMN in 28 patients with CPA lesions. Prior to this, we undertook
anatomical observation of bilateral CPA in two adult cadaver heads using the
neuroendoscope. NEAMN tumour resection was performed in eight acoustic neuromas,
one meningioma and 14 cholesteatomas and NEAMN vascular decompression was
performed in five patients with trigeminal neuralgia. Both the neurovascular
structures of the CPA and the ventral surface of the pons, as well as the
clivus, can be inspected using the neuroendoscope through a retrosigmoid
approach with a 2-3 cm diameter bony opening. Complete excision of the tumour
with preservation of the facial nerve was achieved in all eight acoustic
neuromas. Likewise, total resection of the tumour was possible in the 14
cholesteatomas and one meningioma. Paroxysmal facial pain resolved after NEAMN
vascular decompression in the five patients with trigeminal neuralgia. There
were no postoperative complications or deaths in this series. The CPA can be
divided into three levels - the cranial, medial, and caudal, and each level
contains specific neurovascular structures as seen through the neuroendoscope.
Knowledge of these divisions is useful to master the common NEAMN procedures of
the CPA. NEAMN for CPA lesions via a retrosigmoid approach is a useful adjunct
to standard microneurosurgical techniques effect and may decrease the operative
risk.
PMID: 15851077 [PubMed - indexed for MEDLINE]
4: J Clin Neurosci. 2005 Apr;12(3):253-5.
Cystic acoustic neuroma.
Wandong S, Meng L, Xingang L, Yuguang L, Shugan Z, Lei W, Chengyuan W.
Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, PR
China.
doctorsuwd@hotmail.comTo define the clinical characteristics of cystic acoustic neuroma, we
retrospectively analyzed 22 patients with cystic acoustic neuroma and reviewed
the literature with regard to clinical manifestation, imaging features,
diagnosis, surgical procedures and prognosis. An acoustic neuroma was defined as
cystic according to the following criteria: the presence of
hypodense/hypointense areas on CT or MRI, the identification of cystic elements
at operation and histological verification. At the end of surgery, the facial
nerve was anatomically intact in 86.4% of cystic acoustic neuromas. Complete
removal of the tumor was achieved in 18 cases (81.8%). We conclude that patients
with cystic acoustic neuroma need prompt surgery with special attention paid to
the preservation of the facial nerve.
PMID: 15851076 [PubMed - indexed for MEDLINE]
5: J Clin Neurosci. 2003 Nov;10(6):680-2.
Chronic expanding intracerebral hematoma.
Yuguang L, Liangwen Z, Fusheng L, Shugan Z, Xingang L, Wandong S, Chengyuan W.
Department of Neurosurgery, Qilu Hospital of Shandong University, 250012, Jinan,
China
In order to study the clinical characteristics of chronic expanding
intracerebral hematoma (CEICH), we analyzed retrospectively 21 patients with
CEICH and reviewed the literature with regard to clinical manifestations,
medical imaging features, surgical findings, pathological examinations,
diagnoses, treatments and prognoses, etc. All patients recovered well and did
not recur 1-2 months after operation, except one, who died of contralateral
intracerebral hemorrhage three months later. Patients were followed-up by
computerized tomographic (CT) scanning. MRI was useful for the preoperative
diagnosis.
PMID: 14592617 [PubMed - in process]
6: J Clin Neurosci. 2003 Nov;10(6):674-6.
Rerupture of intracranial aneurysms during cerebral angiography.
Yuguang L, Tao J, Meng L, Shugan Z, Jiangang W, Yang Y, Wandong S, Chengyuan W.
Department of Neurosurgery, Qilu Hospital of Shandong University, 250012, Jinan,
PR China
Three cases of rerupture of intracranial aneurysms during cerebral angiography
(RIADCA) between June and September, 2001 are reported. All cases underwent
emergency craniotomy and aneurysm clipping. The subarachnoid blood and the
extravasating contrast medium were removed intraoperatively as completely as
possible. There was no mortality in this series. The incidence, timing, sex,
age, inducing factors, risk factors, prevention measures and prognosis are
discussed and reviewed in conjunction with the literature.
PMID: 14592615 [PubMed - in process]
7: J Clin Neurosci. 2002 Nov;9(6):637-9.
Intracranial tumoural haemorrhage--a report of 58 cases.
Yuguang L, Meng L, Shugan Z, Yuquan J, Gang L, Xingang L, Chengyuan W.
Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, PR
China.
liuyuguang3000@hotmail.comIn order to study the computerized tomographic (CT) appearances and clinical
characteristics of intracranial tumoural haemorrhage (ITH), we analyzed
retrospectively fifty-eight patients with ITH and reviewed the literature. As a
result, 91% patients had acute or subacute onset and 26% manifested haemorrhage
as their first symptoms. CT scanning indicated that intratumoural bleeding
occurred in 23 cases, bleeding into parenchyma 18 cases, subarachnoid space 6
cases, ventricle 3 cases and subdural space 8 cases. Thirty-eight patients had
emergency operations and the others had selective operations. Both tumours and
haematomas were removed all together in all patients. Fifty-five patients were
cured or improved and three died during the perioperative stage in our series.
Among the patients with ITH, there were 21 metastatic tumours, 19 gliomas, 10
meningiomas, 6 pituitary adenomas, 1 melanoma and 1 acoustic neurilemoma. The
onset of most ITH resembled that of cerebrovascular diseases. The location of
ITH and the CT appearances of ITH varied in different cerebral tumours. Radical
removal of brain tumours with haemorrhage is an effective treatment for ITH,
which can greatly decrease the perioperative mortality rate and improve the
prognoses of patients. Copyright 2002 Elsevier Science Ltd.
Publication Types:
Review
PMID: 12604273 [PubMed - indexed for MEDLINE]
