Minimally Invasive Brain Surgery

Robert Louis, MD is an award-winning neurosurgeon based in Newport Beach, Southern California who specializes in minimally invasive brain surgery to treat brain and pituitary conditions.

Minimally Invasive Keyhole Brain Surgery

For the last thirty years, the minimally invasive keyhole brain surgery such as endoscopic endonasal approach, retromastoid approach, and supraorbital eyebrow craniotomy, has been developed and refined to improve modern skull base neurosurgery, limiting trauma to surrounding tissues and nerves when accessing tumors and lesions. Read more »

Endoscopic Endonasal Approach

Endoscopic endonasal approach is an innovative surgical technique that uses the nose and sinuses as a natural pathways to access and remove brain tumors and lesions in the citical areas of the base of the skull and upper spine. This approach is used fo the treatment of sinunasal carcinoma, olfactory neuroblastomas and meningiomas.  Read more »

Retromastoid Approach

The less invasive retromastoid approach is a safe and effective keyhole procedure that is performed through an incision behind the ear to create a small bony opening to access tumors or lesions located in the back areas of the brain, where the brainstem and major nerves are located. Read more »

Supraorbital Eyebrow Craniotomy

Supraorbital eyebrow craniotomy is a safe and effective keyhole approach used to access and remove metastatic brain tumors and gliomas located along the subfrontal section of the brain or around the pituitary gland, the are close to the optic nerve or vital arteries. This approach uses a small incision (1.5 – 2 cm x 2.5 cm) to create an opening above the orbit. Read more »

Conventional Craniotomy

Conventional craniotomy is a surgical procedure that temporarily removes a portion of the skull (bone flap) to access the brain underneath and treat conditions affecting the brain. This procedure is performed when a tumor is pushing on the brain, hemorrhage (bleeding) in the brain from stroke, aneurysm, vascular malformation or trauma. In addition, craniotomy is used to treat other neurological diseases, brain infection, injuries or skull fructures, aneurysm,arteriovenous malformation (AVM). Read more »

Robert Louis, MD specializes in minimally invasive treatments in Orange County, southern California. For appointments, please call 949-383-4190 or Contact Us.