A 33-year-old male with right eye amaurosis and panhypopituitarism previously submitted to surgery and radiotherapy was admitted with a presumptive recurrence of a nonsecreting pituitary macroadenoma (the first diagnosis, in another service). Magnetic Resonance Imaging (MRI) confirmed an expansive solid isointense lesion in the posterior region of the sella with suprasellar component (Figure 1)...

The extrapontine myelinolysis of osmotic demyelination syndrome (ODS) is a well-known but uncommon disorder of the central nervous system. Although the mechanism is not fully understood and the treatment is controversial, hyponatremia is probably considered to be the main pathophysiological basis. There are few reports of ODS caused by a sellar lesion. Here we present a case of suprasellar arac...

• Intracranial germinoma is the most common malignant intracranial germ cell tumor. It usually occurs in children and young adults and with the current therapies, many patients experience long-term survival. • Suprasellar region germinoma can present with isolated hypothalamic–pituitary axis dysfunction such as diabetes insipidus, delayed growth, menstrual irregularities, or precocious puberty,...

• Intracranial germinoma is the most common malignant intracranial germ cell tumor. It usually occurs in children and young adults and with the current therapies, many patients experience long-term survival. • Suprasellar region germinoma can present with isolated hypothalamic–pituitary axis dysfunction such as diabetes insipidus, delayed growth, menstrual irregularities, or precocious puberty,...

The authors present the case of a 62-year-old woman with rapid enlargement of a meningioma following radiosurgery (RS). Previous slow growth of the tumor over a 3-year period and the radiological signs of benign meningioma had been confirmed by successive MR scans. Histopathological examination performed after successful surgical removal revealed an atypical, infiltrating meningioma.

Pneumosinus dilatans (PSD) refers to an abnormally enlarged, air-filled paranasal sinus without radiological evidence of localized bone destruction, hyperostosis, or mucous membrane thickening. This disorder has been associated with meningioma, especially optic nerve sheath meningioma, but its pathophysiology remains unclear. Spontaneous pneumocephalus is an exceptional presentation of PSD and,...

PURPOSE Molecular and clinical observations suggest a role of sex steroid hormones in the occurrence of meningioma. However, there is limited and often conflicting data on the use of hormone replacement therapy (HRT) as a possible risk factor for meningioma. The goal of this study was to investigate whether there is an association between a diagnosis of meningioma and either current or past HRT...

We reported a 71 years old woman, with history of rest and postural tremor, bradykinesia and memory problems. In her dynamic MRI, a contrastenhanced tumor in the cerebellopontine (CP) angle was found which was compatible with a meningioma. 99mTc-TRODAT SPECT showed decreased activity in the left putamen, indicating idiopathic Parkinson disease. There was also a focus of increased activity on th...

Meningioma of the internal auditory canal is very rare. There are only 15 previous reports of intracanalicular meningioma. The authors add a case report of a patient with meningioma of the internal auditory canal. A 31-year-old woman presented with a one-year history of headache, dizziness, hearing loss and left facial paralysis. An MRI of the temporal bone demonstrated a tiny isointense intrac...

Primary extradural meningioma is about 1-2% of all meningiomas. Primary intraosseous meningioma is a rare form of intra-bone tumors that account for approximately 67% of extradural meningiomas. We report a primary intraosseous meningioma of a 69-year-old man who had headaches and a mass on right parietal scalp for the past few months. Remarkably, the brain tissue within the osteolytic cavity of...