Yang R.-J.,Peking University |
Wang W.-B.,Peking University |
Wang W.-B.,Radiology Institute |
Zhang Y.,Peking University
Journal of Practical Oncology | Year: 2010
Objective: To evaluate the effect of intravenous contrast agent on dose distribution in postoperative whole pelvic radiotherapy (WPRT) plans for gynecologic cancers. Methods: Ten endometrial and cervical cancer patients undergoing postoperative WPRT were enrolled. Two sets of computerized tomography (CT) images were acquired in the same position before and after intravenous contrast agent injections. Three dimensional WPRT plans were created for each patient on the non-enhanced CT and enhanced CT. The dose distribution calculated from the two sets of CTs was compared with regard to planning target volumes (PTV), OARs and normal tissue. Results: The doses calculated from the enhanced CTs were lower than those from the non-enhanced CTs, but the differences of mean dose to PTV, OARs and normal tissue were less than 1.0 Gy, the differences of the maximum dose to OARs and normal tissue were less than 2.0 Gy. The differences were not statistically significant between the non-enhanced and enhanced CTs. Conclusion: Planning from CT scans with intravenous contrast agent results in tolerably small errors clinically for postoperative three-dimensional conformai WPRT.
Cavagna L.,University of Pavia |
Caporali R.,University of Pavia |
Abdi-Ali L.,Irccs Foundation S Maugeri |
Dore R.,Radiology Institute |
And 2 more authors.
Journal of Rheumatology | Year: 2013
Objective. To describe the longterm effectiveness and safety of cyclosporine (CYC) in patients with anti-Jo1-positive antisynthetase syndrome with corticosteroid-refractory interstitial lung disease (ILD). Methods. All patients with anti-Jo1 antisynthetase syndrome referred to our division between June 1991 and February 2010 were retrospectively evaluated for ILD. ILD was assessed using pulmonary function tests (PFT) and/or high-resolution computed tomography (HRCT). Kazerooni score was used to evaluate the HRCT extent of ILD. Prednisone was the first-line treatment in all cases (1 mg/kg/day orally, then tapering). Patients with corticosteroid-refractory or relapsing ILD were then included in this retrospective study. All patients started CYC (3 mg/kg/day) without increasing prednisone dosage. Both PFT and chest HRCT were regularly reassessed during followup. Results. Over the period of study we evaluated 18 patients with antisynthetase syndrome; 17 had ILD (13 women; median age at ILD onset 57 yrs); all patients failed prednisone within 12 months of ILD onset and subsequently started CYC. The median followup on CYC was 96 months [interquartile range (IQR) 57-120 mo]. Upon starting CYC, median forced vital capacity (FVC) was 60% (IQR 56%-70%), median DLCO 60% (IQR 50%-62.75%), and median Kazerooni score 16 (IQR 7-18). After 1 year of CYC, FVC (p = 0.0006), DLCO (p = 0.0010), and total Kazerooni score (p = 0.0002) improved and prednisone was tapered (median reduced from 25 mg/day to 2.5 mg/day; p < 0.0001). The results were substantially maintained including at last available followup. CYC side effects were hypertension (5 patients) and creatinine increase (6 patients). CYC was reduced in 3 cases and withdrawn in 4. Three out of 4 patients who interrupted CYC experienced ILD relapse; 2 patients recommenced low-dose CYC with subsequent ILD control. One patient refused re-treatment and subsequently died. Conclusion. CYC is effective and substantially safe in patients with anti-Jo1 antisynthetase syndrome with corticosteroid-refractory ILD. CYC withdrawal may be associated with ILD relapse, and low-dose CYC was effective in ILD control. The Journal of Rheumatology Copyright © 2013. All rights reserved.
Ashur-Fabian O.,Tel Aviv University |
Blumenthal D.T.,Tel Aviv Sourasky Medical Center |
Bakon M.,Radiology Institute |
Nass D.,Sheba Medical Center |
And 2 more authors.
Anti-Cancer Drugs | Year: 2013
Glioblastoma multiforme (GBM) is the most malignant and frequent brain tumor, with an aggressive growth pattern and poor prognosis despite best treatment modalities. Long-term survival of patients with GBM is rare. Optic glioma represents 0.6-1.2% of all brain tumors. Unlike low-grade optic gliomas in children, optic gliomas in adults are highly aggressive and death usually occurs in less than a year. Prolonged progression-free survival and survival rates have been reported in association with induced hypothyroidism in two clinical trials for recurrent GBM. We present the clinical, radiological, and pathological findings in a patient with inoperable GBM of the optic chiasm. Following failure of initial, standard radiation and temozolomide therapy, chemical hypothyroidism was induced using the antithyroid thioamide, propylthiouracil, followed by carboplatin chemotherapy. Initial thyroid stimulating hormone, free T4, and free T3 analysis was carried out and then monthly. This patient responded rapidly to treatment (clinically and with tumor regression within 4 weeks) on two separate occasions with an extended remission period (2.5 years) and prolonged overall survival (4.5 years). We report the successful long-term tumor response to medically induced chemical hypothyroidism in conjunction with carboplatinum chemotherapy of an adult patient with grade IV GBM of the optic chiasm. These clinical observations find mechanistic support from the recent identification of potent mitogenic actions of the thyroid hormone, L-thyroxine, in malignant glioma through binding to a cognate thyroid hormone receptor on the αvβ3 integrin. Approaches to block its activity are now explored in preclinical studies. © 2013 Wolters Kluwer Health Lippincott Williams & Wilkins.
Amit M.,Rambam Medical Center |
Na'Ara S.,Rambam Medical Center |
Binenbaum Y.,Rambam Medical Center |
Billan S.,Radiology Institute |
And 3 more authors.
Journal of Neurological Surgery, Part B: Skull Base | Year: 2014
Objective Chordoma is a locally aggressive tumor. The aim of this study was to assess the efficacy of different surgical approaches and adjuvant radiation modalities used to treat these patients. Design Meta-analysis. Main Outcome Measures Overall survival (OS), disease-specific survival (DSS), and progression-free survival (PFS). Results The 5-year OS and PFS rates of the whole cohort (n = 467) were 86% and 65.7%, respectively. The 5-year DSS for patients who underwent open surgery and endoscopic surgery was 45% and 49%, respectively (p = 0.8); PFS was 94% and 79%, respectively (p = 0.11). The 5-year OS of patients treated with surgery followed by adjuvant radiotherapy was 90% compared with 70% of those treated by surgery alone (p = 0.24). Patients undergoing partial resection without adjuvant radiotherapy had a 5-year OS of 41% and a DSS of 45%, significantly lower than in the total-resection group (p = 0.0002 and p = 0.01, respectively). The complication rates were similar in the open and endoscopic groups. Conclusions Patients undergoing total resection have the best outcome; adjuvant radiation therapy improves the survival of patients undergoing partial resection. In view of the advantages of minimally invasive techniques, endoscopic surgery appears an appropriate surgical approach for this disease. © 2014 Georg Thieme Verlag KG Stuttgart. New York.
Zach L.,Oncology Institute |
Zach L.,Tel Aviv University |
Guez D.,Advanced Technology Center |
Last D.,Advanced Technology Center |
And 14 more authors.
PLoS ONE | Year: 2012
The current standard of care for newly diagnosed glioblastoma multiforme (GBM) is resection followed by radiotherapy with concomitant and adjuvant temozolomide. Recent studies suggest that nearly half of the patients with early radiological deterioration post treatment do not suffer from tumor recurrence but from pseudoprogression. Similarly, a significant number of patients with brain metastases suffer from radiation necrosis following radiation treatments. Conventional MRI is currently unable to differentiate tumor progression from treatment-induced effects. The ability to clearly differentiate tumor from non-tumoral tissues is crucial for appropriate patient management. Ten patients with primary brain tumors and 10 patients with brain metastases were scanned by delayed contrast extravasation MRI prior to surgery. Enhancement subtraction maps calculated from high resolution MR images acquired up to 75 min after contrast administration were used for obtaining stereotactic biopsies. Histological assessment was then compared with the pre-surgical calculated maps. In addition, the application of our maps for prediction of progression was studied in a small cohort of 13 newly diagnosed GBM patients undergoing standard chemoradiation and followed up to 19.7 months post therapy. The maps showed two primary enhancement populations: the slow population where contrast clearance from the tissue was slower than contrast accumulation and the fast population where clearance was faster than accumulation. Comparison with histology confirmed the fast population to consist of morphologically active tumor and the slow population to consist of non-tumoral tissues. Our maps demonstrated significant correlation with perfusion-weighted MR data acquired simultaneously, although contradicting examples were shown. Preliminary results suggest that early changes in the fast volumes may serve as a predictor for time to progression. These preliminary results suggest that our high resolution MRI-based delayed enhancement subtraction maps may be applied for clear depiction of tumor and non-tumoral tissues in patients with primary brain tumors and patients with brain metastases. © 2012 Zach et al.
Intravascular large B‑cell lymphoma: A rare and potentially reversible cause of cerebral stroke [Intravaskuläres großzelliges B‑Zell-Lymphom: Eine seltene und potenziell reversible Ursache des Schlaganfalls]
Hofer S.,Luzerner Kantonsspital |
Kessler M.,Radiology Institute |
Godau J.,Kantonsspital Uri |
Weiler D.,Luzerner Kantonsspital |
And 3 more authors.
Memo - Magazine of European Medical Oncology | Year: 2016
Intravascular lymphoma (IVL), a rare, extranodal form of non-Hodgkin lymphoma (NHL), can cause infarcts by occluding small arteries of the brain. Owing to its heterogeneous clinical manifestations and unfavorable prognosis, the diagnosis is often made postmortem. Patients can present with a range of motor or sensory deficits, rapid cognitive impairment, aphasia or signs of myelitis, often with nonspecific radiographic findings.Timely recognition of a treatable disease is essential to prevent permanent neurocognitive defects. We present a case who could be treated successfully with chemotherapy. © 2016, Springer-Verlag Wien.
Bertolini F.,Azienda Ospedaliero Universitaria di Modena |
Rossi G.,Pathology Section |
Fiocchi F.,Radiology Institute |
Giacometti M.,Azienda Ospedaliero Universitaria di Modena |
And 7 more authors.
Tumori | Year: 2011
In this report we describe the case of a young woman with familial adenomatous polyposis who developed metastatic rectal cancer during pregnancy. At diagnosis, we decided to perform a transabdominal laparoscopic adrenalectomy, because of the high risk of bowel obstruction, and to define the origin of the adrenal gland lesion, suspected to be primary on the basis of imaging results. The histological specimen showed a collision tumor between an adrenal metastasis of a rectal tumor and a primary adrenal gland carcinosarcoma. The peculiarity of the case is due not only to its clinical presentation during pregnancy, but also to the presence of this uncommon adrenal collision tumor. A particular challenge for the clinician is to define the priority between these two tumors: the presence of two distinct and colliding aggressive neoplasms poses a problem in the choice of the best therapeutic approach, also given the impossibility to biopsy all metastatic sites. However, we decided to treat the patient as having a metastatic rectal cancer, because we had a solid histological confirmation of metastases.
Radovanovic M.,Radiology Institute
Chirurgia (Bucharest, Romania : 1990) | Year: 2011
During last three decades interventional radiology became most powerfull tool in palliative treatment of patients with malignant biliary stenosis. We report a case of 62-year-old patient with malignant biliary obstruction caused by recidivant tumor of common bile duct remnant with infiltration of previously created hepaticojejunostomia. Biliary decompression was achieved by placement of two self-expanding metallic stents. In presented patient, due to previous surgery percutaneous approach was mandatory. Also, considering the unresectability of recidivant lesion and poor prognosis, definitive, preferable internal biliary drainage was to be achieved. Therefore the placement of metallic self-expanding stent was the therapeutic method of choice. The aim of percutaneous minimally invasive radiological interventions is to achieve effective biliary decompression with internal bile drainage if possible.
PubMed | Radiology Institute
Type: Case Reports | Journal: Chirurgia (Bucharest, Romania : 1990) | Year: 2011
During last three decades interventional radiology became most powerfull tool in palliative treatment of patients with malignant biliary stenosis.We report a case of 62-year-old patient with malignant biliary obstruction caused by recidivant tumor of common bile duct remnant with infiltration of previously created hepaticojejunostomia. Biliary decompression was achieved by placement of two self-expanding metallic stents.In presented patient, due to previous surgery percutaneous approach was mandatory. Also, considering the unresectability of recidivant lesion and poor prognosis, definitive, preferable internal biliary drainage was to be achieved. Therefore the placement of metallic self-expanding stent was the therapeutic method of choice.The aim of percutaneous minimally invasive radiological interventions is to achieve effective biliary decompression with internal bile drainage if possible.
PubMed | Radiology Institute
Type: Comparative Study | Journal: The British journal of radiology | Year: 2011
The aim of the study is to compare CT enterography with polyethylene glycol solution (PEG-CT) with CT enteroclysis (CT-E) in patients with suspected small bowel disease.145 patients underwent abdominal contrast-enhanced 16-row multidetector CT after administration of 2000 ml of PEG by mouth (n = 75) or after administration of 2000 ml of methylcellulose by nasojejunal tube (n = 70). Small bowel distension, luminal and extraluminal findings were evaluated and compared with small bowel follow-through examination in 60 patients, double contrast enema in 50, surgery in 25 and endoscopy in 35. Statistical evaluation was carried out by testing. For both techniques we have also calculated the effective dose and the equivalent dose in a standard patient.Crohns disease was diagnosed in 64 patients, neoplasms in 16, adhesions in 6. Distension of the jejunum was better with CT-E than PEG-CT (p<0.05: statistically significant difference). No significant difference was present for others sites (p>0.05). Evaluation of pathological ileal loops was good with both techniques. The values of sensitivity, specificity and diagnostic accuracy were respectively 94%, 100% and 96% with CT-E, and 93%, 94% and 93% with PEG-CT. The effective dose for PEG-CT was less than the dose for the CT-E (34.7 mSv vs 39.91 mSv).PEG-CT shows findings of Crohns disease as well as CT-E does, although CT-E gives better bowel distension, especially in the jejunum, and has higher specificity than PEG-CT.