Intraventricular textiloma with granuloma formation following third ventricle colloid cyst resection - a case report.

Despite precautions, cotton and gauze pads used for dissection or to achieve haemostasis during neurosurgical procedures can inadvertently be left behind and result in clinically symptomatic or asymptomatic and radiologically apparent mass lesion, sometimes referred to as "textilomas" or "gossypibomas", often mimicking recurrent tumour or abscess on neuroimaging studies. We report the neuroimaging evaluation, including computed tomography (CT), magnetic resonance imaging (MRI) and spectroscopy (H1-MRS), in a case of textiloma developing after the treatment of a third ventricle colloid cyst.

Intrapontine malignant nerve sheath tumor: MRI and MRS features.

The primary source of malignant intracerebral nerve sheath tumors is still unclear We report the imaging and MR spectroscopic findings in a 39-year-old man with a very rare brain stem tumor MR examination revealed the presence of intraaxial brain stem tumor with a partial exophytic growth. On pathological examination, the neoplasm appeared to be an intrapontine nerve sheath tumor originating most likely from the intrapontine segment of one of the cranial nerve fibres. The tumor showed exophytic growth, with consequent spread to adjacent subaracnoid space.

Hormone receptors in benign intracranial meningiomas.

Purpose: Although some embryologic data suggest that the neural crest elements, which are not a target tissue for estrogen and progesterone, participate in the forming of meningothelial cells, meningiomas show hormone receptors. The aim of this study was to investigate the estrogen (ER) and progesterone receptors (PR) content of benign meningiomas (WHO grade I) which were completely resected.

Materials And Methods: Paraffin-embedded tissue sections of 30 intracranial meningiomas were examined immunohistochemically using monoclonal antibodies for ER and PR.