A 67-year-old female presented with a rare metastatic skull tumor from cholangiocarcinoma (CCC) manifesting as a progressive painful subcutaneous tumor. Computed tomography and magnetic resonance (MR) imaging revealed an osteolytic tumor attached to the sigmoid sinus and mastoid sinus. Mass reduction of the tumor was performed and radiotherapy applied to the postoperative cavity. The symptoms r...

A 67-year-old female presented with multiple dural arteriovenous fistulas (AVFs) manifesting as dementia rapidly progressing over 2 months. The initial diagnosis was Creutzfeldt-Jakob disease based on the acute clinical course. However, angiography eventually revealed multiple dural AVFs involving the bilateral convexities to the superior sagittal sinus and the right transverse-sigmoid sinus. E...

Unexpected bleeding from the dural sinus can sometimes occur when performing a dural opening during microvascular decompression. We conducted dural opening safely by performing indocyanine green (ICG) videoangiography before making a dural incision. We introduce two specific cases in which surgery was performed to treat a trigeminal neuralgia. In both cases, a small craniectomy was performed in...

Apparent diffusion coefficient (ADC) values at magnetic resonance imaging (MRI) are useful to distinguish vasogenic and cytotoxic edema due to cerebovascular diseases. Dural arteriovenous fistulas (DAVFs) with retrograde leptomeningeal venous drainage may cause cerebral edema by venous congestion. We report herein the course of ADC values of cerebral edema before and after endovascular treatmen...

Cerebral venous sinus thrombosis (CVST) is an uncommon cause of cerebral infarction, compared to arterial diseases. It is often unrecognized at initial presentation due to the diversity of causes and clinical manifestations. A 29-year-old female patient complained of severe headache and presented at the emergency room with altered consciousness. Brain computed tomography and brain magnetic reso...

We report a 20-year-old woman with sickle cell disease (SCD) who presented with a severe pulsating headache, nausea, and vomiting. Her history was significant for a past thrombotic event during which she had not used anticoagulation therapy as prescribed. Her mental status was mildly confused. On funduscopic examination, papilledema and retinal hemorrhages were found. Results of a computed tomo...

A 46-year-old man was referred to our institution due to hemoptysis and a fever. He had no notable medical history except for schizophrenia. Limited mouth opening due to severe pharyngeal pain and right conjunctival edema were remarkable, as well as septic shock. Computed tomography revealed peritonsillar abscess (Picture 1) and septic pulmonary embolisms (Picture 2). Pus from the abscess and b...

The jugular foramen at the base of the skull varies in shape and size the foramen lies at the petrous part of temporal bone and behind by the occipital bone. It’s irregular in shape. Usually the right foramen is larger than the left. The variation in the foramen is observed in different racial group and sexes. The shape and size of foramen is inversely related to size of sigmoid sinus. Petrosal...

Skull base osteomyelitis (SBO) is difficult to diagnose when a patient presents with multiple cranial nerve palsies but no obvious infectious focus. There is no report about SBO with septic pulmonary embolism. A 51-yr-old man presented to our hospital with headache, hoarseness, dysphagia, frequent choking, fever, cough, and sputum production. He was diagnosed of having masked mastoiditis compli...

CONCLUSION The surface template-assisted marker positioning (STAMP) method is useful for successful Bonebridge™ (BB) implantation on a planned site while avoiding dangerous positions. OBJECTIVES To confirm the usefulness of the STAMP method for the safe operation of BB. METHODS From a patient's temporal bone CT data, a guide plate and confirmation plate were generated by the STAMP method. T...