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Search for the word below: bone metastases
Number of hits: 217
AUGUST 30, 2019
[Calcium plays a key role in a wide range of biologic functions. It is involved in skeletal mineralization, muscle functions, nerve transmission, and hormonal secretion and modulate various cellular functions too. Lines of research, on possible association of calcium metabolism regulation with tumorigenesis have been extensively studied in the recent decades. Implying disruptions and/or alterations of known regulatory and molecular pathways can lead to severe, sometimes life-threatening complications. The shift in physiological regulation and pathological factors also affect bone metastases and hypercalcaemia in cancer patients. For this reason, it is important to know about the changes in calcium metabolism and its treatment options in cancerous diseases.]
AUGUST 30, 2019
[Tumors with standard electrochemotherapy (ECT) has raised over the past decade from skin cancers to locally advanced or metastatic tumors. The procedure became a reliable alternative of other local tumor ablation methods, because of its patient tolerability, effi cacy across histotypes, and repeatability. ECT is based on the physical phenomenon of reversible electroporation; short electric pulses are applied to tumor nodules to achieve transient cell membrane permeabilization to otherwire poorly permeant chemotherapy drugs, which consequently increases cytotoxicity. At present recognized indications include superfi cial metastases of malignant melanoma, breast cancer, head and neck skin tumors, Kaposi sarcoma, primary and recurrent nonmelanoma skin cancers, and in well-selected patients mucosal oropharyngeal cancers. Emerging applications include skin metastases from visceral or hematological malignancies, vulvar cancer, certain benign skin lesions, and the combination of ECT with systemic immunotherapy. Thanks to the technical developments, the new ECT indications are deep-seated tumors, including bone metastases, liver malignancies, pancreatic and prostate cancers with the use of long needle variable geometry electrodes. Herein we review the present status of ECT from the basic principles to emerging applications, and report the effi cacy of standard ECT across histotypes.]
SEPTEMBER 30, 2020
Although vertigo is one of the most common complaints, intracranial malignant tumors rarely cause sudden asymmetry between the tone of the vestibular peripheries masquerading as a peripheral-like disorder. Here we report a case of simultaneous temporal bone infiltrating macro-metastasis and disseminated multi-organ micro-metastases presenting as acute unilateral vestibular syndrome, due to the reawakening of a primary gastric signet ring cell carcinoma. Purpose – Our objective was to identify those pathophysiological steps that may explain the complex process of tumor reawakening, dissemination. The possible causes of vestibular asymmetry were also traced. A 56-year-old male patient’s interdisciplinary medical data had been retrospectively analyzed. Original clinical and pathological results have been collected and thoroughly reevaluated, then new histological staining and immunohistochemistry methods have been added to the diagnostic pool. During the autopsy the cerebrum and cerebellum was edematous. The apex of the left petrous bone was infiltrated and destructed by a tumor mass of 2x2 cm in size. Histological reexamination of the original gastric resection specimen slides revealed focal submucosal tumorous infiltration with a vascular invasion. By immunohistochemistry mainly single infiltrating tumor cells were observed with Cytokeratin 7 and Vimentin positivity and partial loss of E-cadherin staining. The subsequent histological examination of necropsy tissue specimens confirmed the disseminated, multi-organ microscopic tumorous invasion. Discussion – It has been recently reported that the expression of Vimentin and the loss of E-cadherin is significantly associated with advanced stage, lymph node metastasis, vascular and neural invasion and undifferentiated type with p<0.05 significance. As our patient was middle aged and had no immune-deficiency, the promoting factor of the reawakening of the primary GC malignant disease after a 9-year-long period of dormancy remained undiscovered. The organ-specific tropism explained by the “seed and soil” theory was unexpected, due to rare occurrence of gastric cancer to metastasize in the meninges given that only a minority of these cells would be capable of crossing the blood brain barrier. Patients with past malignancies and new onset of neurological symptoms should alert the physician to central nervous system involvement, and the appropriate, targeted diagnostic and therapeutic work-up should be established immediately. Targeted staining with specific antibodies is recommended. Recent studies on cell lines indicate that metformin strongly inhibits epithelial-mesenchymal transition of gastric cancer cells. Therefore, further studies need to be performed on cases positive for epithelial-mesenchymal transition.
JULY 30, 2020
Intracranial localization of Ewing’s sarcoma is considerably very rare. Herein, we present clinical and neuroimaging findings regarding a 4-year-old boy with intracranial Ewing’s sarcoma. He was born prematurely, suffered intraventricular haemorrhage, posthaemorrhagic hydrocephalus developed, and a ventriculoperitoneal shunt was inserted in the newborn period. The patient endured regular follow ups, no signs of shunt malfunction nor increased intracranial pressure were observed. The last neuroimaging examination was performed at 8 months of age. Upon reaching the age of 4 years, repeated vomiting and focal seizures began, and symptoms of increased intracranial pressure were detected. A brain MRI depicted a left frontoparietal space-occupying lesion infiltrating the superior sagittal sinus. The patient underwent a craniotomy resulting in the total excision of the tumour. The histological examination of the tissue revealed a small round blue cell tumour. The diagnosis was confirmed by the detection of EWSR1 gene translocation with FISH (fluorescent in situ hybridization). No additional metastases were detected during the staging examinations. The patient was treated in accordance to the EuroEwing 99 protocol. Today, ten years onward, the patient is tumour and seizure free and has a reasonably high quality of life.
JULY 30, 2020
Background and aims – Description of two cases of rare intravascular large B-cell lymphoma and secondary T-cell lymphoma diagnosed postmortem, that manifested clinically as longitudinally extensive transverse myelitis (LETM). We discuss causes of diagnostic difficulties, deceptive radiological and histological investigations, and outline diagnostic procedures based on our and previously reported cases. Case reports – Our first case, a 48-year-old female was admitted to the neurological department due to paraparesis. MRI suggested LETM, but the treatments were ineffective. She died after four weeks because of pneumonia and untreatable polyserositis. Pathological examination revealed intravascular large B-cell lymphoma (IVL). Our second case, a 61-year-old man presented with headache and paraparesis. MRI showed small bitemporal lesions and lesions suggesting LETM. Diagnostic investigations were unsuccessful, including tests for possible lymphoma (CSF flow cytometry and muscle biopsy for suspected IVL). Chest CT showed focal inflammation in a small area of the lung, and adrenal adenoma. Brain biopsy sample from the affected temporal area suggested T-cell mediated lymphocytic (paraneoplastic or viral) meningoencephalitis and excluded diffuse large B-cell lymphoma. The symptoms worsened, and the patient died in the sixth week of disease. The pathological examination of the presumed adenoma in the adrenal gland, the pancreatic tail and the lung lesions revealed peripheral T-cell lymphoma, as did the brain and spinal cord lesions. Even at histological examination, the T-cell lymphoma had the misleading appearance of inflammatory condition as did the MRI. Conclusion – Lymphoma can manifest as LETM. In cases of etiologically unclear atypical LETM in patients older than 40 years, a random skin biopsy (with subcutaneous adipose tissue) from the thigh and from the abdomen is strongly recommended as soon as possible. This may detect IVL and provide the possibility of prompt chemotherapy. In case of suspicion of lymphoma, parallel examination of the CSF by flow cytometry is also recommended. If skin biopsy is negative but lymphoma suspicion remains high, biopsy from other sites (bone marrow, lymph nodes or adrenal gland lesion) or from a simultaneously existing cerebral lesion is suggested, to exclude or prove diffuse large B-cell lymphoma, IVL, or a rare T-cell lymphoma.
NOVEMBER 20, 2015
[Background and purpose – Treatment of central nervous system (CNS) tumors has always played an important role in development of radiotherapy techniques. Precise patient immobilisation, non-coplanar field arrangement, conformal treatment, arc therapy, radiosurgery, application of image fusion to radiation planning or re-irradiation were first introduced into clinical routine in the treatment of brain tumors. Methods – A modern multifunctional radiation instrument, Novalis TX has been installed at the University of Pécs two years ago. New methods, such as real time 3D image guided therapy, dynamic arc therapy and ultra-conformity offer further progress in treatment of CNS tumors. Whole brain irradiation and simultaneous fractionated stereotactic radiosurgery or integrated boost seem to be an optimal method in the treatment of not only soliter or oligo, but even a higher number (4-9) and not typically radiosensitive brain metastases. The new treatment strategy is illustrated by presentation of four case histories. Results – Treatment protocol was completed in all cases. Treatment period of 1.5 to 3 weeks, and treatment time of only a few minutes were not stressful for the patients. A quite remarkable clinical improvement as to general condition of the patients was experienced in three cases. Follow-up images confirmed either remission or a stable disease. Conclusions – Simultaneous whole brain radiotherapy and integrated stereotactic radiosurgery is a reproducible, safe method that offers an effective irradiation with delivery of definitive dosage even in cases with radio-insensitive brain metastasis.]
NOVEMBER 30, 2019
[Among tumours found in the suprasellar region metastases are very rare and the most frequent primary tumours are lung and breast cancer. Data of a patient with clear cell renal carcinoma with intra-suprasellar metastasis will be discussed. As in most of the tumours in the sellar region, the first symptom was visual deterioration with visual field defect. A transsphenoidal debulking of the tumour was performed and the residual tumor was treated by CyberKnife hypofractionated stereotactic radiotherapy. Both our patient’s visual acuity and visual field impairment improved after the surgery and CyberKnife treatment. At 6-month after irradiation, MR of the sella showed a complete remission of the tumour. This was the first treatment with CyberKnife in our country in case of a tumour close to the optic chiasm. According to our best knowledge, there are 21 cases in the literature with renal cell carcinoma metastasis in the suprasellar region.]
MAY 10, 2018
[Tumor associate neurological symptoms are heterogeneous clinical entities with diverse etiologies, that may infl uence both the central, and peripheral neural system, as a primary or secondary tumor, may due to immune mediated processes. In our review, we summarize the neural syndromes frequently occurring in oncological practice. We focus on the most frequent neuronal tumors, the brain metastases, that are recently affected by the new targeted and immunotherapies showing increasing intracranial activities. We provide details on paraneoplastic neurological syndromes, because, in spite of their relatively rare occurrence, the modern diagnostic protocols may contribute to early diagnosis that are mandatory for detecting the underlying tumor. Finally we describe the neurological side effects of various oncotherapies, such as PD1 inhibitors, that are accompanied by 3% incidence of neurological complications, and chemotherapy related polyneuropathies. We provide support for anticonvulsive drug selection also, based on their drug-interaction profi le.]
MARCH 30, 2019
Secretory meningioma is a rare form of meningiomas which differentiates from the meningothelial subtype. It is characterized by significant peritumor edema and distinct immunohistochemical and molecular genetic profiles. We present a middle aged female patient with secretory meningioma infiltrating the orbital bone from the primary cranial base location and causing exophthalmos, features rarely described with this tumor. Surgical resection was challenging because of the associated brain swelling and rich vascularization of the tumor. Imaging and immunohistochemical studies revealed characteristic hallmarks of secretory meningioma. While histologically it was a benign tumor, due to the orbital bone and soft tissue infiltration, postoperative management of neurological sequelae was challenging. This case highlights distinctive clinical, imaging and histological features along with individual characteristics of a rare form of meningiomas.
Hypertension and nephrology
SEPTEMBER 12, 2018
[Most of the renal transplant recipients suffer from hypertension. Hypertension substantially contributes to the high cardiovascular mortality in this population. The recommendation of the Hungarian Society of Hypertension and the international guidelines suggest to achieve less than 130/80 mmHg as target blood pressure in these patients. Several factors may be in the background of hypertension after kidney transplantation, which can be summarized as factors from the recipient-side, the donorside and factors provoked by transplantation itself. In most of the cases early after transplantation high doses of immunosuppressive drugs (especially calcineurin inhibitors and steroids) are responsible for the increased blood pressure. There are some further special methods apart from the general recommendations which are needed during the examination of hypertension of kidney transplant patients: e.g. measurement of blood trough-level of immunosuppressive drugs, investigation of bone-mineral disorder, screening for the level and causes of anaemia, check-up of the renal graft circulation. Kidney transplant patients suffering from hypertension usually need more than two antihypertensive drugs beyond the use of non-pharmaceutical antihypertensive methods. In the early posttransplantation period calcium channel blockers are preferred antihypertensive medications, because they counterbalance the vasoconstrictive effect of calcineurin inhibitors. The administration of renin-angiotensin-aldosterone inhibitors are rather suggested after the stabilization of renal function (from the 1-3 months posttransplantation). When designing antihypertensive strategy, comorbidities and special factors should be regarded as well, especially volume overload, proteinuria, allograft function (GFR), diabetes, other cardiovascular risk factors, previous cardiovascular events. The setup of an individual therapeutical strategy is advised in view of all these factors, which is different according to the timing after transplantation: the perioperative, the early postoperative phases and from 1-3 months after transplantation have special focuses.]
Clinical NeuroscienceLate carcinomatous meningitis as vertigo
Clinical NeuroscienceAlexithymia is associated with cognitive impairment in patients with Parkinson’s disease
Lege Artis Medicinae[COVID-19-cardiology at spring, 2020]
Clinical Oncology[Opportunities and challenges in online support of cancer patients]
Clinical Oncology[Role of infl ammation in the carcinogenesis]
Clinical Oncology[Treatment sequencing in metastatic colorectal cancer]
Clinical Oncology[The treatment of the locally advanced and the metastatic gastric cancer]
Clinical Oncology[Non-surgical treatment of ovarian cancer]