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Bilal Imširović

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Background: Autoimmune limbic encephalitis (ALE) is an inflammatory brain process involving a group of diseases with antibodies against neuronal synaptic and cellular antigens. Diagnosis is based on clinical examination, neurological functional tests, cerebrospinal fluid analysis, immunological testing, and radiological findings. Objective: This case report aims to present the case of a 68-year-old patient initially hospitalized for intermittent neurological deficits in the form of cognitive disorders of consciousness, which was initially declared as dementia without physical neurological deficit. Case presentation: Initial brain MRI (SIEMENS Magnetom Avanto, 1.5 T, Erlangen, Germany) showed changes differentially diagnosed characterised as glial neoplasm of mixed-grade astrocytoma or inflammatory process of unilateral autoimmune encephalitis. Since the neurosurgical opinion suggested a higher-grade glioma with proposed surgical treatment, the patient was referred for repeated MRI with MR spectroscopy in order to exhaust all diagnostic possibilities before surgery. MRI with MR spectroscopy (SIEMENS Magnetom Lumina, 3 T, Erlangen, Germany) revealed radiologically altered findings, in the right hippocampus and parahippocampal gyrus, which primarily corresponded to changes due to unilateral autoimmune encephalitis,due to its morphology characteristics and spectroscopy profile, making the primary glial neoplasm of lower grade less likely. Since the neurological mosaic IIFT result showed a positive LGI1 antibody finding, therapy for autoimmune encephalitis was initiated, leading to significant improvement in cognitive functions and the return of short-term memory. Conclusion: Although the detection of antibodies against onconeural, cellular, and synaptic proteins represents a significant advancement in diagnosing autoimmune limbic encephalitis, the role of conventional diagnostic tools such as MRI, EEG, and cerebrospinal fluid analysis should not be overlooked, where the application of new functional imaging techniques such as MR spectroscopy can be beneficial and should be considered.

Bilal Imširović, Emir Guso, I. Omerhodžić, Adnan Tawil, Z. Merhemić

Background: Sarcoidosis is a multisystem granulomatous disease of unknown etiology, characterized by presence of granulomas in affected tissues with variety in clinical presentations and presents a differential diagnostic and therapeutic dilemma. Clinical presentation of neurosarcoidosis is very variable. Diagnosis is based on clinical and radiological criteria and histological findings of disseminated non-necrotic granuloma followed by negative cultures for bacteria and fungi. MRI plays a key role in detection of lesions located in the brain parenchyma. Objective: The aim of this article was to present case of a 36-year-old male patient, who came to doctor with symptoms of fever, dry cough with whitish sputum, lymphadenopathy of neck region and neurological disturbances in form of headaches and vision problems. Case presentation: Patient underwent on pulmonary examination and results indicated presence of sarcoidosis. CT examination was performed (SIEMENS Somatom Definition AS, Erlangen, Germany), which confirmed presence of mediastinal and hilar lymphadenopathy. Ultrasound (US) examination of a neck region was also performed showed significantly enlarged and morphology altered lymph nodes. After biopsy of several neck lymph nodes, histopathological was proven diagnosis of sarcoidosis. Due to neurological disturbances in form of headaches and vision problems patient was examined by an ophthalmologist, neurologist and endocrinologist. Hormonal analysis showed an increase of prolactin and that raised suspicion for neurosarcoidosis. In further diagnostic evaluation it was indicated MRI examination of the brain with focus on sellar region. Conclusion: Contrast-enhanced MRI is the modality of choice for investigating suspected neurosarcoidosis. The versatility of MR recording and the amount of diagnostic informations obtained from MRI examination is huge. Comparison of MRI sequences obtained, facilitate interpretation of these findings. Obtained MRI information and available literature, correlating with other diagnostic modalities (ultrasound and CT) facilitate understanding of the specific pathology.

Bilal Imširović, G. Abdelhakim, Muhamed Djedovic, Amina Tawil, E. Zerem

Background: A bezoar is a collection of indigestible substances that, after swallowing, form a mass in the gastrointestinal tract, most often in the stomach. A trichobezoar is a mass made of ingested, undigested hairs and food remains, while ingestion of hair is called trichophagia. This is an extremely rare condition, with 90% of cases occurring among women, out of which 80% are under the age of 30. The diagnosis is based on clinical examination, findings obtained through radiological modalities (ultrasound and computed tomography) and endoscopy. Objective: The aim of this article is to present the case of a 17-year-old female patient who visited the doctor due to abdominal pain and a visible mass in the projection of the stomach. Case presentation: The patient, accompanied by her parents, and following the instructions of a general practitioner who suspected the presence of a tumour in the abdomen, reported to the surgical clinic. The US examination revealed the presence of a heteroechoic mass in the stomach area, but it could not be determined with certainty where it belonged (Samsung Medison V8 ultrasound system). The CT scans revealed the presence of an inhomogeneous structure in the stomach area occupying the entire volume of the stomach. The mentioned structure included the presence of internal air particles and marginal imbibition of the orally applied contrast agent. The described structure did not infiltrate the stomach wall and, based on the CT scan, the diagnosis established was a bezoar. Under general anaesthesia, a laparotomy with a gastrotomy was performed, and a hard hook shaped mass composed of hair and remains of undigested food was removed from the stomach. Conclusion: A mobile, palpable mass located in the abdomen of younger female patients accompanied by abdominal symptoms, especially in patients where there is information about hair pulling and swallowing, may suggest trichobezoar. The golden standard for trichobezoar presentation is upper endoscopy. If unavailable, the diagnosis is established by a CT scan, preferably with oral application of a contrast agent. Treatment of larger trichobezoars is surgical, while endoscopic and laparoscopic removal is possible only in the case of small trichobezoars.

E. Zerem, Bilal Imširović, Suad Kunosić, Dina Zerem, Omar Zerem

Aim of the study Most of the malignancies leading to obstructive jaundice are diagnosed too late when they are already advanced and inoperable, with palliation being the only treatment option left. Due to progressing hyperbilirubinaemia with its consequent adverse effects, biliary drainage must be established even in advanced malignancies. This study aims to investigate and analyse factors that affect clinical outcomes of percutaneous trans-hepatic biliary drainage (PTBD) in patients with obstructive jaundice due to advanced inoperable malignancy, and identify potential predictors of patient survival. Study design: Observational retrospective cohort study. Material and methods Baseline variables and clinical outcomes were evaluated in 108 consecutive patients treated with PTBD. The study’s primary endpoints were significant bilirubin level decrease and survival rates. Secondary endpoints included periprocedural major and minor complication rates and catheter primary and secondary patency rates. Results PTBD was technically successful and bile ducts were successfully drained in all 108 patients. Median serum bilirubin level, which was 282 (171-376) µmol/l before drainage, decreased significantly, to 80 (56-144) µmol/l, 15 days after stent placement (p < 0.001). Patient survival ranged from 3 to 597 days and the overall (median) survival time following PTBD was 168 days (90-302). The 1, 3, 6, 12 and 18-month survival rates were 96.3%, 75.9%, 48.1%, 8.3% and 1.9%, respectively. Multivariate analysis revealed that liver metastases and alkaline phosphatase were significantly associated with mortality. The overall complication rate was 9.3%. Conclusions PTBD is a safe and effective method to relieve jaundice caused by advanced inoperable malignant disease. Careful patient selection is necessary when introducing PTBD in order to avoid invasive procedures in patients with a poor prognosis.

Societal importance and the quality of scientific research highly depend on the usefulness of the results of research for the societal and scientific community. The wish to allocate the funds to high-quali-ty research and to establish right criteria for scientific evaluation and academic career progression, make scientific criteria increasingly important to measure the quality of research and knowledge valorization. However, it is very difficult to apply the right criteria which can objectively assess scientific research. For many years, there has been a great interest in scientific ranking and evaluation of scientific journals, but also of sci-entific contribution of scientists. It is generally accepted that the IF (WoS) and the total number of citations of articles published in the journal, are the most relevant parameters of the journal's significance. However, the significance of a scientist and the value of their scientific production are much more complicated to evaluate and they cannot be directly reflected by the importance of the journals in which their articles are published. In this article, the authors describe and evaluate the most known scientific databases which are used in science. The majority of existing science metric systems, which evaluate the achievement of scientists are focused solely on the number of citations of their articles. For example, H-index, which is calculated as the lowest ranked ar-ticle which number of citations matches its ranking number, has considerable shortcoming because it does not take into account the individual contribution of each author and allows expanding author lists with authors whose contribution may be insignificant or none. Therefore, the authors propose Z-score, as a new science met-ric system, which takes into account the author's contribution to the scientific article and greatly remedy major discrepancies in evaluating scientific production of individual authors and institutions.

The small intestine is a challenging organ for clinical and radiological evaluation. The introduction of radiological imaging techniques, which do not significantly disturb patients’ comfort and safety, attempts to obtain an adequate diagnosis and valuable information. The aim is to determine the capabilities and potential of ultrasound, computed tomography (CT), diffusion-weighted imaging (DWI), and contrast-enhanced magnetic resonance (MR) enterography to establish the diagnosis and to evaluate the severity and activity of intestinal inflammation. Conventional ultrasound is a suitable orientation method in the initial evaluation of patients with Crohn’s disease. At the same time, contrast-enhanced MR enterography provides an excellent assessment of disease activity, as well as the complications that accompany it. Contrast-enhanced MR enterography, combined with DWI, allows for excellent evaluation of disease activity and problems or difficulties following it. The examination can be repeated, controlled and can monitor patients with this disease.

I. Omerhodžić, A. Džurlić, A. Ahmetspahić, BekirRovčanin, M. Kalamujić, N. Bilalović, Bilal Imširović, EnraSuljić

Glioma surgery has been the main component of glioma treatment for decades. The surgi- cal approach changed over time, making it more complex and more challenging. With molecular knowledge and diagnostic improvement, this challenge became maximally safe resection of tumor, which resulted in prolonged overall survival, progression-free period, and a better quality of life. Today, the standard glioma treatment includes maximally safe resection, if feasible, administration of temozolomide, radiotherapy, and chemotherapy. Surgical resection is performed as subtotal resection, gross total resection, and supratotal resection. Subtotal resection is the resection where a part of tumor is left. Gross total resection is a complete removal of the magnetic resonance imaging (MRI) visible tumor tissue. Supratotal resection is performed as gross total resection with excising the MRI visible tumor tissue borders into the unaffected brain tissue. Before we make final decision on which type of resection should be performed, many factors have to be considered. The question has to be answered: what the actual impact of resection on the progression of glioma is and what the functional risk of resection is.

I. Omerhodžić, N. Bilalović, B. Rovčanin, Bilal Imširović, E. Suljic, A. Rotim, K. Arnautović

SUMMARY – Epithelioid hemangioendothelioma is a rare vascular brain tumor. It develops from endothelial cells, usually in the liver, lung, bone and soft tissue. Primary localization of this tumor in the intracranial space is very uncommon; only 47 cases have been described in the literature. This tumor was initially classified as grade I (benign) in the World Health Organization (WHO) 2007 classification. In 2016, this tumor was re-classified as grade III (malignant). Herein, the first case report of epithelioid hemangioendothelioma in the cerebellum of a male patient is presented. Complete surgical excision was done. No adjuvant therapy was administered. Magnetic resonance imaging performed 2 years after the surgery continued to show no recurrence of the tumor. To our knowledge, this is the first report of cerebellar location of this rare tumor. In addition, the authors report drastic re-classification of the epithelioid hemangioendothelioma from the benign tumor (WHO 2007) to a malignant one (2016), which significantly changes postoperative management and follow up of this brain neoplasm.

Aim To determine capabilities and potential of contrast enhanced magnetic resonance imaging (MRI) enterography in order to establish the diagnosis and to evaluate severity and activity of intestinal inflammation. Methods Fifty-five patients with suspicion for presence of Crohn's disease were evaluated. All patients underwent contrast enhanced MRI enterography and diffusion weighted imaging (DWI), and subsequently endoscopic examination or surgical treatment. Four parameters were analysed: thickening of the bowel wall, and presence of abscess, fistula and lymphadenopathy. Results Comparing results of DWI and contrast enhanced MRI enterography a significant difference between results given through diffusion and histopathological test was found, e.g. a significant difference between results obtained through diffusion and MRI enterography was found. MRI enterography sensitiveness for bowel wall thickening was 97.7% and specificity 70%, whilst DWI sensitivity for bowel wall thickening was 84% and specificity 100%. The diagnostics of abscess and fistula showed no significant difference between DWI and MRI, while in lymphadenopathy significant difference between contrast enhanced MRI enterography and DWI was found. Conclusion Contrast enhanced MRI enterography in combination with DWI allows for excellent evaluation of disease activity, but also problems or complications following it. The examination can be repeated, controlled, and it can contribute to monitoring of patients with this disease.

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