Lege Artis Medicinae

[What is good and what is bad?]

NAGY Zsuzsa

JANUARY 20, 2005

Lege Artis Medicinae - 2005;15(01)

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Lege Artis Medicinae

[CARCINOID TUMORS]

RÁCZ Károly

[Carcinoid tumors are rare neoplasms: they are traditionally divided into three subgroups (foregut, midgut and hindgut tumors). Despite their neuroendocrine cell origin and the similarities in their histological structure, the molecular background, pathogenesis, clinical features, diagnostic and therapeutic procedures, as well as the prognosis of carcinoid tumors located at different sites may be highly variable. Although sensitive biochemical markers (serum chromogranin A concentration, urinary 5- hydroxyindoleacetic acid excretion) and localization methods (somatostatin receptor scintigraphy, positron emission tomography) are available, a considerable number of patients are only diagnosed at the late stages of the disease. When surgical cure is not obtainable such as in cases with advanced metastatic disease, surgical procedures to reduce tumoral tissue should be still considered. At present, the most effective drugs for the symptomatic treatment of carcinoid tumors are somatostatin analogues (octreotide, lanreotide). In addition to their beneficial effect on clinical symptoms they may stabilize tumor growth for many years and rarely, tumor regression is produced. Radioisotope-labelled somatostatin analogues are presently under clinical evaluation, which may offer new therapeutic means for patients with carcinoid tumors.]

Lege Artis Medicinae

[SCIENTIFIC DIGEST]

Lege Artis Medicinae

[Report from the 2004 Congress of the American Society for Cardiology]

PFLIEGLER György

Lege Artis Medicinae

[EVIDENCE BASED ORAL ANTIDIABETIC THERAPY]

JERMENDY György

[Oral antidiabetic drugs are used in type 2 diabetic patients when diet and physical exercise have failed. The oral antidiabetic drugs available in Hungary can be classified according to their main effect. In this regard, antihyperglycaemic drugs with no hypoglycaemic potential (alfaglucosidase inhibitors, biguanides, thiazolidinedions) and drugs with a potential of insulin secretion (sulfonylureas, prandial glucose regulators) can be distinguished. Acarbose is mainly used in order to decrease the postprandial glucose excursion. Metformin is the drug of choice for obese, insulin resistant diabetic subjects while buformin is not preferable anymore since the availability of metformin. Rosiglitazone, the only thiazolidine-dion derivative in Hungary, can be used in combination therapy in diabetic subjects with clinical characteristics of the metabolic syndrome. The list of sulfonylureas contains five drugs in Hungary which enables differential therapeutical strategies to be performed. The prandial glucose regulators can be used either in monotherapy or in combination with other drugs at the relatively early stage of the disease. At present, the recommendations for treating diabetic patients with oral antidiabetic drugs can be based on clinical evidences.]

Lege Artis Medicinae

[POST-CHOLECYSTECTOMY SYNDROME AND SPHINCTER OF ODDI DYSFUNCTION]

MADÁCSY László

[After cholecystectomy, recurrent biliary-like pain, alone or in association with a transient increase in liver enzymes may be the clinical manifestation of the sphincter of Oddi dysfunction (SOD). Most of the clinical information concerning SOD refers to postcholecystectomy patients who have been classified according to clinical presentation, laboratory results and endoscopic retrograde cholangio-pancreatography (ERCP) findings as: biliary type I, biliary type II, and biliary type III. The prevalence of SOD has been reported to vary from 9 to 11% in unselected patients having postcholecystectomy syndrome up to 68% in a selected group of patients without organic disorder and complaining of postcholecystectomy pain. Diagnostic work-up of postcholecystectomy patients for suspected SOD includes liver biochemistry and pancreatic enzyme levels plus negative findings of structural abnormalities. Usually this would include transabdominal ultrasound, gastroscopy and ERCP. Depending on the available resources, endoscopic ultrasound and magnetic resonance cholangiography may precede endoscopic retrograde cholangiopancreatography in specific clinical conditions. In SOD patients, the endoscopic sphincter of Oddi manometry is the gold-standard diagnostic method to evaluate the abnormal motor function of the sphincter of Oddi. Quantitative evaluation of bile transit with cholescintigraphy is valuable in the decision whether to perform sphincter of Oddi manometry or to treat. The standard treatment for SOD is sphincterotomy. In biliary type I patients, the indication for endoscopic sphincterotomy is straightforward without the need of additional investigations. Slow bile transit on cholescintigraphy in biliary type II patients is an indication to perform endoscopic sphincterotomy without sphincter of Oddi manometry. Positive Nardi or Debray evocative test in biliary type III patients is an indication to perform sphincter of Oddi manometry. Medical therapy with nitrosovasodilatators, Ca-channel blockers, theophyllin compounds, β2 receptor agonists and anticholinerg drugs can be useful in biliary type II and type III patients preceding endoscopic sphincterotomy. If medical therapy fails, one might proceed to perform ERCP and endoscopic sphincterotomy but only in patients with abnormal SO manometry results.]

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Alexithymia is associated with cognitive impairment in patients with Parkinson’s disease

SENGUL Yildizhan, KOCAK Müge, CORAKCI Zeynep, SENGUL Serdar Hakan, USTUN Ismet

Cognitive dysfunction (CD) is a common non-motor symptom of Parkinson’s disease (PD). Alexithy­mia is a still poorly understood neuropsychiatric feature of PD. Cognitive impairment (especially visuospatial dysfunction and executive dysfunction) and alexithymia share com­mon pathology of neuroanatomical structures. We hypo­thesized that there must be a correlation between CD and alexithymia levels considering this relationship of neuroanatomy. Objective – The aim of this study was to evaluate the association between alexithymia and neurocognitive function in patients with PD. Thirty-five patients with PD were included in this study. The Toronto Alexithymia Scale–20 (TAS-20), Geriatric Depression Inventory (GDI) and a detailed neuropsychological evaluation were performed. Higher TAS-20 scores were negatively correlated with Wechsler Adult Intelligence Scale (WAIS) similarities test score (r =-0.71, p value 0.02), clock drawing test (CDT) scores (r=-0.72, p=0.02) and verbal fluency (VF) (r=-0.77, p<0.01). Difficulty identifying feelings subscale score was negatively correlated with CDT scores (r=-0.74, p=0.02), VF scores (r=-0.66, p=0.04), visual memory immediate recall (r=-0.74, p=0.01). VF scores were also correlated with difficulty describing feelings (DDF) scores (r=-0.66, p=0.04). There was a reverse relationship bet­ween WAIS similarities and DDF scores (r=-0.70, p=0.02), and externally oriented-thinking (r=-0.77,p<0.01). Executive function Z score was correlated with the mean TAS-20 score (r=-62, p=0.03) and DDF subscale score (r=-0.70, p=0.01) Alexithymia was found to be associated with poorer performance on visuospatial and executive function test results. We also found that alexithymia was significantly correlated with depressive symptoms. Presence of alexithymia should therefore warn the clinicians for co-existing CD.

Clinical Neuroscience

Late simultaneous carcinomatous meningitis, temporal bone infiltrating macro-metastasis and disseminated multi-organ micro-metastases presenting with mono-symptomatic vertigo – a clinico-pathological case reporT

JARABIN András János, KLIVÉNYI Péter, TISZLAVICZ László, MOLNÁR Anna Fiona, GION Katalin, FÖLDESI Imre, KISS Geza Jozsef, ROVÓ László, BELLA Zsolt

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.

Hypertension and nephrology

[About the care of patients with hyperuricaemia and gout]

[This consensus document is intended to provide guidance for the effective and efficient treatment of asymptomatic individuals with high uric acid levels and gout patients.]

Clinical Neuroscience

[What happens to vertiginous population after emission from the Emergency Department?]

MAIHOUB Stefani, MOLNÁR András, CSIKÓS András, KANIZSAI Péter, TAMÁS László, SZIRMAI Ágnes

[Background – Dizziness is one of the most frequent complaints when a patient is searching for medical care and resolution. This can be a problematic presentation in the emergency department, both from a diagnostic and a management standpoint. Purpose – The aim of our study is to clarify what happens to patients after leaving the emergency department. Methods – 879 patients were examined at the Semmel­weis University Emergency Department with vertigo and dizziness. We sent a questionnaire to these patients and we had 308 completed papers back (110 male, 198 female patients, mean age 61.8 ± 12.31 SD), which we further analyzed. Results – Based on the emergency department diagnosis we had the following results: central vestibular lesion (n = 71), dizziness or giddiness (n = 64) and BPPV (n = 51) were among the most frequent diagnosis. Clarification of the final post-examination diagnosis took several days (28.8%), and weeks (24.2%). It was also noticed that 24.02% of this population never received a proper diagnosis. Among the population only 80 patients (25.8%) got proper diagnosis of their complaints, which was supported by qualitative statistical analysis (Cohen Kappa test) result (κ = 0.560). Discussion – The correlation between our emergency department diagnosis and final diagnosis given to patients is low, a phenomenon that is also observable in other countries. Therefore, patient follow-up is an important issue, including the importance of neurotology and possibly neurological examination. Conclusion – Emergency diagnosis of vertigo is a great challenge, but despite of difficulties the targeted and quick case history and exact examination can evaluate the central or peripheral cause of the balance disorder. Therefore, to prevent declination of the quality of life the importance of further investigation is high.]

Clinical Neuroscience

[The role of sleep in the relational memory processes ]

CSÁBI Eszter, ZÁMBÓ Ágnes, PROKECZ Lídia

[A growing body of evidence suggests that sleep plays an essential role in the consolidation of different memory systems, but less is known about the beneficial effect of sleep on relational memory processes and the recognition of emotional facial expressions, however, it is a fundamental cognitive skill in human everyday life. Thus, the study aims to investigate the effect of timing of learning and the role of sleep in relational memory processes. 84 young adults (average age: 22.36 (SD: 3.22), 21 male/63 female) participated in our study, divided into two groups: evening group and morning group indicating the time of learning. We used the face-name task to measure relational memory and facial expression recognition. There were two sessions for both groups: the immediate testing phase and the delayed retesting phase, separated by 24 hours. 84 young adults (average age: 22.36 (SD: 3.22), 21 male/63 female) participated in our study, divided into two groups: evening group and morning group indicating the time of learning. We used the face-name task to measure relational memory and facial expression recognition. There were two sessions for both groups: the immediate testing phase and the delayed retesting phase, separated by 24 hours. Our results suggest that the timing of learning and sleep plays an important role in the stabilizing process of memory representation to resist against forgetting.]