Lambros Vlahos

Cancer information disclosure in different cultural contexts.

The relationship between truth telling and culture has been the subject of increasing attention in the literature. The issue of whether, how and how much to tell cancer patients concerning diagnosis is still approached differently depending on country and culture. The majority of physicians tell the truth more often today than in the past, in both developed and developing countries, but most of them prefer to disclose the truth to the next of kin. Nurses in Anglo-Saxon countries are considered to be the most suitable health-care professionals for the patients to share their thoughts and feelings with. Nevertheless, in most other cultures the final decision on information disclosure lies with the treating physician. Regardless of cultural origin, the diagnosis of cancer affects both family structure and family dynamics. In most cases patients’ families, in an effort to protect them from despair and a feeling of hopelessness, exclude the patient from the process of information exchange. The health-care team–patient relationship is a triangle consisting of the health-care professional, the patient and the family. Each part supports the other two and is affected by the cultural background of each of the others as well as the changes that occur within the triangle.

Greek brief pain inventory: Validation and utility in cancer pain

Objective: The Brief Pain Inventory (BPI) is a pain assessment tool. It has been translated into and validated in several languages. The purpose of this study was the translation into and validation of the BPI in Greek. Moreover, we wanted to detect cultural and social differences, if any, of pain interference in patients’ lives. Methods: The translation and validation of the inventory took place at the Areteion Hospital. The final validation sample consisted of 220 cancer patients (123 males, 97 females, age range 21–87 years, mean age 61.3). Primary cancer locations were lung 25.6%, gastrointestinal tract 25.6%, breast 11.5%, prostate 7.07%, gynecological cancers 9.6% and others 20.57%. The patients themselves completed the majority of the Greek BPI (G-BPI) papers. The pain management index (PMI) was also calculated in order to assess the adequacy of pain treatment. Assessing the reliability and the validity made the actual validation of the G-BPI. Results: Pain severity and pain management: 147 patients reported severe pain, 48 patients moderate, and 25 patients mild pain (mean average pain 6.22). From these patients only 21 were found on strong and 33 on weak opioid treatment, while 166 patients were found on no opioid analgesic treatment. In agreement with these data is the PMI which was positive only for 9 patients, while 44 patients had PMI = 0 and all the others had negative PMI scores. Reliability and Validity of the G-BPI: Coefficient alphas were 0.849 for the interference items and 0.887 for the severity items. Additionally, the factor analysis of the G-BPI items results in a two-factor solution, that satisfies the criteria of reproducibility, interpretability and confirmatory setting. Conclusion: This study shows the efficacy of the G-BPI for the assessment of pain severity as well as the pain management in Greece, and therefore its utility in improving the analgesic treatment outcome in Greek patients.

Randomized, open label, prospective study on the effect of zoledronic acid on the prevention of bone metastases in patients with recurrent solid tumors that did not present with bone metastases at baseline

AbstractObjectives: Bisphosphonates have been used successfully in the treatment of hypercalcemia and to reduce skeletal-related complications of bone metastases. Recent in vitro and in vivo evidence suggest that they may also have direct antitumor effects via induction of apoptosis, inhibition of the invasive potential of tumor cell lines in vitro, inhibition of angiogenesis, and reduction in tumor growth indirectly via effects on accessory cells. This is a randomized, open label, prospective study that examined the effect of preventive zoledronic acid treatment on the development of bone metastases in patients with recurrent solid tumors, without bone metastases at the time of randomization. Methods: Forty patients with recurrent or metastatic advanced cancer, without bone metastases, were randomized into the trial to either receive zoledronic acid or no treatment. Patients were followed up until bone metastases were established. Results: The percentage of patients being bone metastases free at 12 mo was 60% in the zoledronic acid and 10% in the control group (p<0.0005), while the percentages at 18 mo were 20% and 5% respectively (p=0.0002). Conclusions: The results have shown that bisphosphonates as adjuvant treatment might be useful for the prevention of bone metastases; however, there is need for blinded randomized data before such an approach would be confirmed. In the meantime preventive use of bisphosphonates in patients without any bone metastases should not be used outside the scope of a clinical trial.

Assessment of liver iron overload by T2-Quantitative magnetic resonance imaging: Correlation of T2-QMRI measurements with serum ferritin concentration and histologic grading of siderosis

PURPOSE To correlate hepatic 1/T2 values obtained by means of a T2-Quantitative MRI (T2-QMRI) technique with three widely applied methods for the evaluation of hemosiderosis, i.e., (a) liver iron concentrations (LFeC) (b) serum ferritin (SF), and (c) histologic grading of siderosis. The impact of coexisting hepatitis was also considered. T2-QMRI measurements were compared with signal intensity (SI) ratio measurements on conventional SE images. MATERIALS AND METHODS Liver T2 relaxation times were calculated in 40 thalassemic patients, on a 0.5 T magnetic resonance imaging system using a multiple spin-echo sequence with parameters: TR = 2500 ms, TE = 12 ms in 20 symmetrically repeatable echoes. RESULTS (a) 1/T2 values were well correlated (r = 0.97) with liver iron concentrations, which ranged from 2.32 to 18.0 mg/g dry weight (normal < 1.6 mg/g). (b) 1/T2 values were also correlated with serum ferritin levels (r = 0.84). At various 1/T2 values, serum ferritin levels were higher for the anti-HCV(+) patients than the anti-HCV(-) ones. (c) T2 values corresponding to successive grades of siderosis presented statistically significant differences. (d) SI ratio measurement assigned less statistically significant results, as compared to T2 values. CONCLUSION T2-QMRI measurement of T2 relaxation time is more accurate than SI ratios in evaluating liver iron overload. It is particularly useful for hemosiderotic patients with coexisting hepatitis since, in this case, serum ferritin is not considered a reliable index of hemosiderosis.

The Hospital Anxiety and Depression Scale in Greek cancer patients: psychometric analyses and applicability

Goals of workThe aim of the present study was to validate the Greek version of the Hospital Anxiety and Depression Scale (HAD) in a palliative care unit.Patients and methodsThe scale was translated with the “forward-backward” procedure to Greek. It was administered twice, with a 1-week interval, to 120 patients with advanced cancer. Together with the HAD scale, the patients also completed the Spielberger State-Anxiety Scale (STAI-S).Main resultsFactor analyses identified a two-factor solution corresponding to the original two subscales of the HAD, which were found to be correlated. The Greek version of the HAD had Cronbach’s alphas for the anxiety and depression scales of 0.887 and 0.703, respectively. Validity as performed using known-group analysis showed good results. Both anxiety and depression subscales discriminated well between subgroups of patients differing in disease severity as defined by ECOG performance status. Correlations between the HAD scale and the STAI-S was 0.681 for the anxiety subscale and 0.485 for the depression subscale.ConclusionsThese psychometric properties of the Greek version of the HAD scale confirm it as a valid and reliable measure when administered to patients with advanced cancer.

Oral transmucosal fentanyl citrate: overview of pharmacological and clinical characteristics.

Oral transmucosal fentanyl citrate (OTFC; brand name Actiq®, Cephalon, UT) is a new opioid formulation that incorporates fentanyl into a lozenge and allows drug delivery through the buccal mucosa. This kind of absorption avoids first-pass metabolism, yielding a bioavailability substantially greater than oral administration. OTFC has a rapid onset of action and a short duration of effect. These characteristics, which resemble the course of a typical breakthrough pain episode, resulted in making OTFC the first opioid analgesic formulation specifically developed and approved for control of breakthrough pain in cancer patients. Apart from that, OTFC has been used in a variety of clinical situations of noncancer pain. This review article presents the synthesis; clinical pharmacology; pharmacokinetic and pharmacodynamic properties, toxicity, and clinical efficacy of this novel agent.

Long-Term Management of Noncancer Pain With Transdermal Therapeutic System-Fentanyl

Transdermal therapeutic system-fentanyl (TTS-F) has been extensively studied in cancer pain management. However, few studies have addressed the long-term management of noncancer pain, especially when it relates to neuropathic pain. A total of 529 patients were recruited into this prospective open-label study to determine the safety and effectiveness of TTS-F in relation to quality-of-life (QOL) stratified according to pain type and etiology. TTS-F significantly improves QOL within 28 days, and pain management within 48 hours. The frequency of side effects rapidly decreases over time, and patients not experiencing adequate pain management are identified within 28 days. The median duration of therapy for effective pain management was 10 months, and 90% of patients sustained such efficacy. TTS-F offers statistically significant increases in QOL-Short Form 12 (including the Physical Component Scale and Mental Component Scale measures) and pain control (Greek Brief Pain Inventory) from one time point to the next (P <.0001). These improvements are not influenced by pain type or etiology. TTS-F is a safe and effective pain management system independent of patient characteristics and demographic factors. What is of most importance is that in those patients with neuropathic pain, for whom opioids have long been thought to be ineffective, similar effectiveness is demonstrated when compared to patients with nociceptive pain.

Magnetic resonance angiography compared to intra-arterial digital subtraction angiography in patients with subarachnoid haemorrhage

SummaryIn order to evaluate the sensitivity and specificity of magnetic resonance angiography (MRA) in spontaneous subarachnoid haemorrhage, 14 patients with recent haemorrhage verified by CT or lumbar puncture were investigated with both selective intra-arterial digital subtraction angiography (IA-DSA) and MRA by two independent teams, each having the same preangiographic information. The results were compared with each other and whenever possible (all positive cases except one) with those of surgical intervention. Seven patients were identified by MRA and IA-DSA as having a single aneurysm on the circle of Willis, 1 an aneurysm of the posterior inferior cerebellar artery 1 an aneurysm of the internal carotid artery (siphon) and 2 patients with two aneurysms on the circle of Willis. MRA and IA-DSA both failed to demonstrate aneurysms in 2 cases. Three patients had negative results on both methods and no surgical intervention was attempted. The aneurysms ranged from 0.3 to 1.5 cm in size. In most cases there was agreement between MRA and DSA, leading us to believe that, if the proper protocols are followed, MRA is a powerful alternative to other established methods in the detection of intracranial aneurysms. At this stage it will not replace IA-DSA prior to surgery, but the ability to obtain various projections using 3D MRA may improve surgical planning.

Phase II study of temozolomide and concomitant whole-brain radiotherapy in patients with brain metastases from solid tumors

The aim of this study was to evaluate the effectiveness and possible toxicity of the combination of temozolomide (TMZ) with whole-brain irradiation (WBI) in the treatment of brain metastases from solid tumors. Patients and Methods: 33 patients with brain metastases were included in the study and treated with TMZ 60 mg/m2/day (days 1-16) concomitantly with WBI (36 Gy/12 fractions given in 16 days). One month after the end of radiotherapy, 6 cycles of TMZ were administered as adjuvant treatment (200 mg/m2/day for 5 consecutive days every 28 days). Results: Responses were assessed using computed tomography at the end of the 3rd and 6th cycle of chemotherapy. The objective response rate was 54.5% and 57.6% after the 3rd and the 6th cycle, respectively. The median overall survival was 12 months. In patients with metastases from lung cancer the objective response rate was 11/14 (78.6%) after both the 3rd and the 6th cycle of treatment. The most common side effects were anemia (24.2%), thrombocytopenia (18.2%), as well as nausea and vomiting (18.2%). The high incidence of hepatotoxicity (45.5%) might be related to concomitantly administered antiepileptic drugs and not to TMZ. Conclusion: WBI combined with TMZ as concomitant and adjuvant treatment is effective in treating brain metastases, with acceptable mild side effects.

Amifostine as radioprotective agent for the rectal mucosa during irradiation of pelvic tumors: A phase II randomized study using various toxicity scales and rectosigmoidoscopy

Aim: To evaluate the cytoprotective effect of amifostine against radiation-induced acute toxicity to the rectal mucosa. Patients and Methods: 36 patients irradiated for prostate or gynecologic cancer were randomized to receive amifostine (n = 18, group A) or not (n = 18, group B). The radiation-induced acute rectal toxicity was evaluated by using three different toxicity scales: WHO scale, EORTC/RTOG toxicity criteria, and a modified toxicity scale based on the LENT-SOMA grading scale and the endoscopic terminology of the World Organization for Digestive Endoscopy. The objective measurements were coming from flexible rectosigmoidoscopy performed at baseline and 1–2 days after completion of the radiotherapy schedule. Anterior-posterior fields were used in the gynecologic patients while 3-D conformal 4-field technique was applied in the prostate cancer patients. The area under the curve (AUC) for dose-volume histograms (DVHs) of the rectum was also assessed during a 3-D treatment planning schedule, and no significant differences were assessed between the two groups, indicating a homogeneous dose-volume effect. Results: Amifostine was well tolerated. No grade 2 or higher WHO and EORTC/RTOG acute toxicity was noted in group A, while acute rectal toxicity (≥ grade 1) was observed in 16/18 patients of group B versus 2/18 of group A (p < 0.001). The onset as well as the duration of acute rectal toxicity were significantly improved in group A (p = 0.002). Rectosigmoidoscopy revealed more severe rectal mucositis in noncytoprotected patients (group B), and modified LENT-SOMA overall mucositis grading score was significantly lower in group A (p = 0.003). Conclusion: Amifostine seems to have a significant cytoprotective efficacy in acute radiation-induced rectal mucositis in terms of symptomatic and objective endpoints.Ziel: Auswertung der zytoprotektiven Wirkung von Amifostin hinsichtlich der strahlungsinduzierten akuten Toxizität auf die Rektumschleimhaut. Patienten und Methodik: 36 aufgrund eines Prostata- oder gynäkologischen Karzinoms bestrahlte Patienten nahmen an einer randomisierten Studie teil. Die eine Hälfte (n = 18, Gruppe A) erhielt Amifostin, die andere Hälfte (n = 18, Gruppe B) nicht. Die strahlungsinduzierte akute Toxizität auf die Rektumschleimhaut wurde mit Hilfe von drei verschiedenen Toxizitätsskalen ausgewertet: der WHO-Skala, den Toxizitätskriterien der EORTC/RTOG und einer modifizierten Toxizitätsskala, die sowohl auf der LENTSOMA-Skala als auch auf der endoskopischen Terminologie der Weltorganisation für intestinale Endoskopie beruht. Zu Beginn und 1-2 Tage nach Beendigung der Strahlentherapie wurden mit Hilfe der flexiblen Rektosigmoidoskopie objektive Messungen vorgenommen. Für die gynäkologischen Patienten wurden ventrodorsale Felder benutzt, wohingegen bei den Patienten mit Prostatakarzinom eine 3-D konformale 4-Felder-Technik appliziert wurde. Während des 3-D-Therapieplans wurde auch die Fläche unter der Kurve (AUC) für die Auswertung in rektalen Dosis-Volumen-Histogrammen (DVH) bestimmt. Zwischen den beiden Gruppen war jedoch kein signifikanter Unterschied festzustellen, was auf eine homogene Dosis-Volumen-Wirkung hindeutet. Ergebnisse: Amifostin war gut verträglich. In Gruppe A wurde der Toxizitätsgrad 2 nach WHO und EORTC/RTOG weder erreicht noch überschritten. In Gruppe A wurde in 16 von 18 Fällen eine akute rektale Toxizität ≥ Grad 1 festgestellt, in Gruppe B dagegen nur in zwei von 18 Fällen (p < 0.001). Bei Gruppe A war hinsichtlich der Zeit bis zum Auftreten der Proktitis sowie deren Dauer eine deutliche Überlegenheit zu verzeichnen (p = 0.002). In der Kontrollgruppe (Gruppe B) deckte die Rektosigmoidoskopie eine wesentlich schwerere Rektumschleimhautentzündung auf, während dir Toxizität entsprechend der modifizierten LENT-SOMA-Skala in der Amifostingruppe bedeutend niedriger war (p = 0.003). Schlussfolgerung: Amifostin scheint in Anbetracht der beobachteten Symptome, gemessen an objektiven Endpunkten, bei akuter strahlungsinduzierter Proktitis eine zytoprotektive Wirkung zu haben