Glioblastoma multiforme usually affects the cerebral hemispheres with the peak age of onset in the sixth or seventh decade, while cerebellar glioblastoma multiforme is a rare tumour especially in younger patients. Most result from de-differentiation from low grade astrocytoma (secondary glioblastoma) or can develop de novo (primary glioblastoma). Primary glioblastomas develop in older patients while secondary glioblastomas develop in younger patients and contain TP53 mutations as the earliest detectable change. We report a 28 year old patient with primary multi-focal cerebellar glioblastoma multiforme and review the pathophysiology, clinical presentation, diagnosis and treatment of cerebellar glioblastomas.

Secondary hyperparathyroidism is one of the most common complications of chronic renal failure (CRF). Its pathogenesis is multifactorial and still not completely understood. Pathological mechanism of hypocalcemia, hyperphosphatemia and calcitriol deficiency are basic characteristics of CRF and main reason for morphological changes in parathyroid glands and hyperparathyroidism (HP). We present a case of a female patient born in 1975. At the age of 10, a urinary infection was diagnosed for the first time and treated. Six years later, as nausea and vomiting started, CRF based on bilateral reflux was diagnosed and the patient was included in the hemodialysis treatment. The patient was again examined in 1997, when biochemical parameters, including the level of parathyroid hormone, ultrasonography of the neck, scintigraphy of the skeleton and densitometry revealed secondary HP. Parathyreoidectomy was perfomed in 1998. During the follow up period, a tumefaction on a ramus mandibulae dex. was noticed, which was cytologically diagnosed as osteitis fibrosa, "brown tumor", a rare complication of the secondary HP. Surgery was performed and PHD was granuloma gigantocelulare. Prevention and therapy of secondary HP is a problem that demands early actions to avoid possible complications.

Only few cases of scalp dermatofibrosarcoma protuberans with intracranial and distant metastasis have been reported. Here we report a case of scalp dermatofibrosarcoma protuberans with frequent local recurrence, intracranial invasion and with distant lung metastasis during 6 years of treatment. We would like to emphasize difficulties in surgical treatment of such invasive and locally recurrent tumors of scalp, and necessity to understand new molecular pathogenesis of dermatofibrosarcoma protuberans and potential treatment strategy with imatinib for patients with surgically untreatable disease. Close surveillance of patients with scalp dermatofibrosarcoma is necessary due recurrence nature of tumor.

Recently, skin-sparing mastectomy (SSM) with nipple-areola complex (NAC) preservation has been promoted as an oncologically safe procedure in practice for selected patients. The criteria of selection have not been yet defined precisely. The focus of this study was to investigate predictive factors of NAC-base neoplastic involvement to define the indications for NAC preservation. A prospective clinical study was conducted of 108 randomly selected female patients with invasive breast cancer. Analyzed markers of NAC involvement were tumor-nipple distance (TND), tumor size, localization, histologic type, grade, lymphovascular invasion (LVI), site, and axillary lymph-node status. The definitive histologic findings of the NAC base were compared with analyzed markers and the frozen section results. NAC base was positive in 23.15% patients at definitive histology with false-negative results in 4.63% patients at intraoperative frozen section. Significant differences were found in TND, tumor size, axillary lymph-node status, and LVI. There were no significant differences in tumor grade and site and not enough cases for statistical evaluation in histologic type and localization. Clinical indications for NAC preservation, according to this study, include tumors < or =2.5 cm, TND >4 cm, negative axillary lymph node status, and no LVI. Considering the possibility of pre- or intraoperative measurement, tumor size, and TND evaluation will result in the lowest possible mistakes in NAC preservation. Frozen section analyses of the NAC base, because of the "false-negative" possibility, could be deemed as a relative prognostic factor until definitive histologic findings. The presence of an extensive intraductal component (EIC) in the "borderline" cases of these criteria could be an additional argument for NAC removal.

Eleven patients with venous angiomas, 6 males and 5 females ranging in age from 4 to 58, are presented. Four patients presented with intracerebral haematoma and 3 patients had associated cavernous angioma, respectively. Patients with intracerebral haematoma had signs and symptoms due to the localization of the haematoma. The other patients presented with headache, seizures, vertigo, ataxia and mental disturbances. Pre-operative diagnosis was based on computerized tomography, magnetic resonance imaging and cerebral angiography. In 9 surgical cases it was confirmed by histopathological examination of operative specimens. After establishing the type, size and location of the lesion decision for operative treatment was made in nine cases, in four of them because of the presence of an intracerebral haematoma and in 5 of them due to severe disability. Eight of these 9 patients recovered completely and one improved. No severe cerebral oedema was encountered after converging medullary veins were excised and main draining veins partially coagulated. In this small series we encountered an unexpectedly large percentage of venous angiomas causing intracerebral haemorrhage which are commonly considered more benign than other vascular malformations. After reviewing previously reported cases of venous angiomas causing intracerebral haemorrhage and severe neurological deficit we think that the term "benign" is worth reconsidering. We propose a thorough examination of each case of venous angioma and the operative treatment when appropriate taking into account patients state and location of angioma.