脳腫瘍Brain Tumors

さまざまな種類の脳腫瘍に対して、脳への損傷を最小限に抑える鍵穴手術から頭蓋底部のアプローチ方法など様々な手法での手術を行っています。
また、手術での摘出リスクが高い部位に関しては定位放射線手術を併用することにより、より安全な治療戦略を提案します。
I perform neurosurgical procedures, which includes using key hole approach or extended skull base approach, based on the brain tumor size and location. For tumors located in high risk regions, Gamma Knife therapy may be done after the surgery to enhance safety and effectiveness.

聴神経鞘腫
Acoustic Neuroma

小さな腫瘍の場合は、ガンマナイフ治療のみでも治療が可能です。中くらいのサイズを超える場合は、安全を優先に考えた手術を行います。通常は耳の後ろから、4~6cmの皮膚切開で500円玉程度の開頭部より摘出を行います。手術は腫瘍のサイズによりますが、3~5時間程度必要です。必要に応じて残存部にガンマナイフ治療を追加します。
For small tumors, Gamma Knife surgery is solely used for treatment. Moderate-sized tumors can be excised completely with maximum safety with neuromonitoring and post-operative Gamma Knife if necessary. In most cases, the surgery is performed through retroauricular region with small skin incision of ~4-6 cm and less than 3 cm craniotomy in diameter.

髄膜腫
Meningioma

頭蓋内のあらゆる部位に発生する可能性のある腫瘍です。腫瘍の部位により、治療選択は異なります。手術で全摘出が理想的ですが、手術のリスクが高い部分はガンマナイフ治療を併用します。頭蓋底部にできた腫瘍の場合は、頭蓋底からの特殊なアプローチが必要なこともあります。
This type of tumor may develop in any region in the skull where the dura mater overlies the brain. The strategy differs according to the location and size. Due to the benign nature, total removal with the originating dura mater is ideal. However, some tumors arising from the skull base require skull base approach and post-operative Gamma Knife.

下垂体腺腫・頭蓋咽頭腫
Pituitary Adenoma/Craniopharyngioma

視神経付近にできることが多く、目の症状を生じることが多い腫瘍です。 手術で全摘出できれば治癒しますが、腫瘍の両側には内頸動脈、海綿静脈洞、脳神経が走行しており、綿密な治療計画と繊細な治療が必要です。耳鼻咽喉科・鼻内視鏡のエキスパートが鼻から頭蓋底部までのアプローチを行った後に、頭蓋骨底部に1円玉程度の小さい開頭を行い、腫瘍の摘出を行います。治療は3時間程度終了します。切開は鼻の奥で行いますので、手術創が外から見えることはありません。
These tumors commonly show symptoms of visual disturbance as they arise around the optic nerves. Total removal leads to complete cure, however, it requires multiple techniques such as microsurgical technique and endoscopic surgery. Small craniotomy less than 2 cm in diameter is made at the middle of the skull base. All procedures are completed within 2-3 hours. The skin incision made inside the nostril cannot be seen after the operation.

類上皮腫
Epidermoid Cysts

まれな腫瘍ですが、三叉神経痛を来すことがあり、ある程度の大きさの腫瘍の場合は摘出が必要です。鍵穴手術から特殊な開頭を必要とする場合など、患者さんに応じた治療方法を検討します。
This is a rare intracranial tumor. This tumor frequently causes trigeminal neuralgia as it tends to arise around the trigeminal nerve. The extent of removal is determined by the symptoms. Due to its benign nature, some patients only require partial removal around the trigeminal nerve for trigeminal neuralgia.

転移性脳腫瘍
Metastatic Brain Tumors

悪性腫瘍(肺癌、乳癌など)が脳に転移をきたすことがあります。 ガンマナイフ治療が極めて有効ですが、大きな場合は手術で摘出することもあります。
Malignant tumors (lung cancer, breast cancer) may metastasize to the brain. Gamma Knife is the most effective option to control this kind of tumor. For large tumors, initial surgical removal, followed by Gamma Knife is a reasonable treatment choice.

case01.Clinoidal Meningioma

53 F
Incidental case
Neurologically intact
Total removal without neurological deficit


case02.Sphenoidal Meningioma

66 F
Visual disturbance
Pre Op Embolization
Subtotal removal
Post Op
Improved visual function
No oculomotor palsy
Remnant followed by GK


case03.Tentorial Meningioma

She was diagnosed with this meningioma 10 years ago, which gradually grew to large size. Increased intracranial pressure due to hydrocephalus impaired her vision. After internal decompression, she was treated with Gamma Knife thereafter.


case04.Falx Meningioma

67 M
Motor weakness of the right side, gait disturbance and poor activity.
After removal, he regained his activity and disappearance of the weakness.


case05.Cavernous sinus Meningioma

59 F
Incidental case, Neurologically intact
Temporopolar approach
No deficit
Cavernous remnant followed by GK


case06.Trochlear Nerve Schwannoma

A 52-year-old man suffered from diplopia, gait disturbance, and sensory disturbance. MR imaging demonstrated a large cystic mass at ambient cistern on the right side.
Subtotal excision followed by Gamma Knife surgery was undertaken. His neurological symptoms disappeared with radiological reduction in size at 15 months follow-up.


case07.Tentorial Meningioma

60 F
Progressive motor weakness of right side, gait disturbance, and hearing loss, eventually leading to complete bed rest.
After total removal, she was able to walk and lives a normal life except the deafness.


case08.Vestibular Shwannoma

70 F
She was twice operated at other hospital.
However, the tumor regrew rapidly. Total removal of the tumor was performed with extended skull base technique, followed by facial nerve reconstruction using sural nerve graft.


case09.Hypoglossal Schwannoma

A 61-year-old male with a large hypoglossal schwannoma with moderate tongue atrophy.
The tumor extended from the enlarged hypoglossal canal to the brainstem intradurally and the high cervical region extradurally. Through the extreme lateral infrajugular transcondylar (ELITE) skull base approach, the tumor was completely removed in a single-stage operation.


井上卓郎 外来/診察予約Contact Us

tel.0749-45-3177

subaru@gammaknife-c.jp

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※以下は予約不要です。※Reservation is not required.

湖東記念病院
Koto Memorial HospitalWebSite
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Higashiomi General Medical Care CenterWebSite
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手術を行う病院Surgical Services

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Shiga, Japan
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