bluuebunny/crossref_metadata_2025_split huggingface dataset:
Hepatitis B virus infection in patients presenting for immunosuppressive cancer therapy with and without underlying HIV infection
Authors: Ngoato Malowane H. , Amponsah-Dacosta Edina , Blose Ntombifuthi , Selabe Selokela G. , Msibi Thembeni L. , Motswaledi Mojakgomo H. , Musyoki Andrew M. 
Published: September 2023

IntroductionReactivation of hepatitis B virus (HBV) infection induced by immunosuppressive cancer therapy is associated with fulminant liver disease and death. While national guidelines recommend HBV screening and antiviral prophylaxis for patients with cancer prior to initiating immunosuppressive therapy, compliance with these measures is unclear. This study characterized the burden of HBV infection among patients diagnosed with gynecological or dermatological cancers, with or without underlying HIV infection, before initiating immunosuppressive therapy. MethodsBetween 2016 – 2018, we recruited study patients from the Dr George Mukhari Academic Hospital in Tshwane, South Africa. Demographic (age, sex) and clinical data (HIV test results, HIV antiviral regimen, type of cancer) were recorded using a standardized data collection form. All participants were tested for HBV surface antigen (HBsAg), and antibodies to the surface (anti-HBs) and core antigens (anti-HBc). For detection of HBV DNA, a nested polymerase chain reaction was used to amplify polymerase gene fragments which were Sanger-sequenced and analyzed using bioinformatics software. All statistical analyses were performed using R version 4.1.0 (2021-05-18) and R studio version 2022.07.2. ResultsStudy participants were predominantly female (96.3%, 103/107) with a median (IQR) age of 50 (17.5) years. Cervical cancer was the most frequent cancer diagnosis (72%). Over half (52.3%; 56/107) of the participants were HIV positive and all but four (92.9%) on highly active antiretroviral therapy at the time of enrollment. The prevalence of chronic hepatitis B in the study population was 11.2% [95% CI:6.2-19.1], increasing to 14.3% [95% CI:6.8-26.8] in the HIV positive sub-population. The overall prevalence of occult HBV infection was 20% [95% CI:12.8-29.7], 57.9% [95% CI:33.97-78.9] of whom tested negative for all serological markers. Phylogenetic inference showed that all polymerase gene sequences generated in this study were sub-genotype A2. Mutational analysis did not reveal any drug resistance-associated amino acid variations in this study. ConclusionThese findings suggest that chronic and occult HBV infections are more prevalent among cancer patients with or without underlying HIV infection compared to what has previously been reported for the general South African population. This underscores the need to scale-up universal HBV serological and molecular screening with timely institution of prophylaxis prior to initiating immunosuppressive cancer therapy.
Female Groin Hernia Repairs in the Swedish Hernia Register 1992–2022: A Review With Updates
Authors: Dahlstrand Ursula , Melkemichel Maria , Österberg Johanna , Montgomery Agneta , de la Croix Hanna 
Published: September 2023

Introduction: Groin hernias in women is much less common than in men; it constitutes only 9% of all groin hernia operations. Historically, studies have been performed on men and the results applied to both genders. However, prospectively registered operations within national registers have contributed to new knowledge regarding groin hernias in women. The aim of this paper was to investigate and present a body of literature based upon the Swedish Hernia Register together with recent data from the register’s annual report.Patients and Methods: PubMed and Embase were searched for studies based on the Swedish Hernia Register between 1992 and 2023. Based on the initial reading of abstracts, studies that presented results separately for women were selected and read. Recent data were acquired from the 2022 annual report of the Swedish Hernia Register.Results: A total of 73 studies of interest were identified. Of these, 52 included women, but only 19 presented separate results for women. Four themes emerged and were analysed further: emergency surgery and mortality, femoral hernias, the risk of reoperation for recurrence, and chronic pain following female groin hernia repairs.Discussion: Studies from the Swedish Hernia Register clearly describe that both the presentation of hernias and outcomes after repair differ significantly between the two genders. The differences that have been identified over the years have been incorporated into the national guidelines. Register data indicates that the guidelines have been implemented and are fairly well adhered to. As a result, significant improvements in outcomes regarding recurrences have been made for women with groin hernias in Sweden.
The importance of Veillonella in the oral microbiome and its impact on dental and periodontal pathology: a literature review
Authors: Saganova T. R. , Tsarev V. N. , Gianni A. B. , Signorini L. , Cavallé E. 
Published: September 2023

Relevance. Veillonella is associated with diseases of the oral cavity. Representatives of this genus occupy a significant share in the composition of the plaque microbiota and are involved in the formation of food chains and regulating the pH of the oral microbiome.The aim of this article is to provide an overview of scientific studies on the Veillonella taxonomic group's position in the oral microbiome and their possible impact on the development of infectious diseases of the oral cavity.Materials and methods. A scientific search was conducted in the databases MEDLINE, EMBASE, NCBI, Web of Science, PubMed, Scopus, and eLibrary.RU for the last 40 years. 88 sources in English and 1 in Russian were analyzed and included in this review.Results. Various species of Veillonella promote the adhesion of Streptococcus mutans and metabolize the lactate produced by streptococci. They also play an essential role in forming the periodontium microbial biofilm, entering into co-aggregation with primary, intermediate and late colonizers, including such periodontal pathogens as Fusobacterium nucleatum and Porphyromonas gingivalis. Veilonella is involved in the formation of lipopolysaccharides and hydrogen sulfide in pulpitis, periapical periodontitis and halitosis.Conclusion. Veillonella spp. is a significant component of the oral microbiome and can be viewed as a stabilizing component and as an indicator of a violation of the ecosystem's metabolic situation.
Clinical-pathological features and molecular background of oligodendrogliomas
Authors: Popescu G. , Paslaru Francesca , Paslaru A.C. , Apostol M. , Zaharia M.C. , Popescu M. , Gorgan R.M. 
Published: September 2023

Background: Diffuse gliomas are the most frequent primary central nervous system (CNS) neoplasms, originating from the parenchyma itself, oligodendrogliomas accounting for approximately 10% of cerebral gliomas. For the past 20 years, the study of genetic/molecular mechanisms of gliomagenesis and progression has gradually come into focus. However, the biological and clinical significance of these mutations is still to be completely characterized. The purpose of this article is to describe our clinical experience with oligodendrogliomas and to review the current literature, in order to better describe the characteristics of the molecular/genetic oligodendroglioma subgroups.
Methods: We performed a single-institution retrospective study that included 66 patients with oligodendrogliomas operated in our department between January 2011 and December 2018.
Results: Our study included 26 female patients (39%) and 40 male patients (59%). The mean age at presentation was 39.9year-old (range 26-59year-old). The tumours were located predominantly in the right hemisphere (53%), the majority being situated in the frontal lobe (59%). 64% of the patients had signs of mass effect on the imaging studies, 13% presented with brain herniation syndromes, 16 % of the surgically treated patients had a relapse with regrowth and malignant transformation of the tumour. The most common complaint that the patients had at admission was headaches. Seizures were the second most common symptom that determined the patients to seek medical attention.
Conclusion: The expanding knowledge regarding the genetic alterations of oligodendroglial tumours could lead to significant changes in treatment strategies. However, the utility of each particular marker in planning the treatment has yet to be established. Emerging data will, most likely, improve outcome prediction and adjuvant therapy strategies through identifying the patients most likely to benefit from a particular treatment.
Brain abcess with "Nocardia Farcinica"
Authors: R.V. Tracicaru , A.I. Cucu , M. Loredana Curecheriu , Dana Mihaela Turliuc 
Published: September 2023

Introduction: Brain abscesses caused by Nocardia farcinica pathogen are rare and usually present as large abscesses with a thick and irregular wall. We present a case of a patient with signs and symptoms of central nervous system infection and had a fulminant evolution with malign cerebral oedema and death.
Case report: The 35-year-old patient presented with mild symptoms that appeared 2 weeks prior and became more aggressive in the last 48 hours. After the initial examination and blood tests, the patient was suspected of a systemic infection because of the high white cell count and high level of inflammatory markers. Antibiotic therapy was started with Ciprofloxacin and Amoxicillin/ Clavulanic Acid. The brain MRI showed a multinodular lesion in the right hemisphere, with contrast enhancement and central high diffusion restriction on T1, T2 and FLAIR. During the antibiotic treatment, the patient suddenly became comatose. Urgent brain CT scan showed malign cerebral oedema with brain shift.
Discussion: There are 58 documented cases of Nocardia farcinica in the literature, as shown in a recent systematic review. Most of the cases are with immunocompromised patients, either through disease or secondary to treatment after organ transplant. In our case, we suspected immunodeficiencies based on the anamnestic data offered by the patient's family. Mortality rates are between 19% and 36,7% in all reported cases, but in our presented case the patient had a rapid aggressive evolution with malign brain oedema that resulted in death.
Conclusions. The management of these cases requires urgent diagnostics and treatment. For our team, the first reported case of Nocardia farcinica and the fast aggressive evolution resulted in a negative outcome, even with antibiotics treatment and surgical evacuation of the abscess.
Efficacy of neuronavigation guided biopsy in deep seated brain lesions
Authors: Chhabra Anuj , Kumar Singla Deepak , Singh Deepak Kumar , Gupta Surender Kumar , Kaif Mohd , Yadav Kuldeep , Ahmad Farhan 
Published: September 2023

Localisation of brain lesions and prevention of damage to vital structures are important goals in the operation of brain pathologies, which can be aimed after the development of many techniques (e.g. angiography, MRI, sonography, frame base stereotaxy). In spite of current developments in radiological imaging techniques, accurate histological diagnosis is required to determine the appropriate treatment methods for intracranial lesions.
The study was conducted in the Department of Neurosurgery, Dr Ram Manohar Lohia Institute of Medical Sciences, over a period of 18 months. Descriptive statistics (frequencies and percentages) were used to interpret the collected data. After editing, data was entered into SPSS free versions for statistical studies. The results from various sites of the biopsy were compared based on sensitivity, specificity, positive and negative predictive values.
In this study, 4 patients were found to be below 20 years, 7 patients in the 20 – 40 years age group, 10 patients in the age group of 40 to 60 years and 4 patients were above sixty years. 22 (88%) patients were found to have positive yield when the biopsy was taken from the core area while 3 (12%) patients were not having any positive results from the biopsy. Sensitivity, specificity, positive predictive value, and negative predictive value of various sites of the biopsy were calculated Sensitivity of the periphery came out to be 68.2 % while specificity was 67.7%. The positive predictive value of the periphery was found to be 93.8 % while the negative predictive value was
22.2%. The sensitivity of the contrast-enhanced area came out to be 72.7 %, with specificity being 67.7%. The positive predictive value of periphery in such cases was found to be 94.1 % and the negative predictive value was 25%. The most common system-related complication was the inability to show choline peak properly, which was present in 7 patients.
Hence, it can be concluded safely that the use of neuronavigation is beginning to have a vital role in a variety of intracranial procedures with precise localisation of both intracranial as well as spinal lesions and prevention of damage to vital structures intraoperatively thereby significantly reducing procedure-related morbidity and mortality.
Comparison of levels of toxic trace elements in two most common spinal pathologies in three different tissues
Authors: A.K. Hakan , Yaycioglu Soner , Daltaban Iskender Samet , Gel Mehmet Selim , Canbek İhsan 
Published: September 2023

Aim: The toxic trace element levels in serum, bone (lamina), and intervertebral disc tissues of patients with lumbar spinal stenosis and lumbar herniated nucleus pulposus (HNP) which are the two most common spinal pathologies were determined, and it was investigated whether they have a role in the pathophysiology of these pathologies.
Materials and methods: Cadmium (Cd), aluminium (Al), arsenic (As), mercury (Hg), and lead (Pb) levels in serum, intervertebral disc, and bone (lamina) tissue of patients with HNP (=20) and 30 with lumbar spinal stenosis (LSS) (n=30) were determined by Inductively Coupled Plasma Mass Spectrometry technique.
Results: LDH group Cd serum level was found to be significantly higher than LSS group Cd serum level (p=0.024). The Al disc level in the HNP group was found to be significantly higher than the Al disc level in the LSS group (p=0.038). While As serum level increased in LDH group, it was determined that As bone level increased very significantly (r= 0.699, p=0.001). In the LSS group, it was determined that the Hg disc level increased significantly as the Hg serum level increased (r=0.608, p<0.01). On the other hand, as the Hg serum level increased in the LDH group, the Hg disc level also decreased significantly (r= -0.579, p<0.01).
Conclusion: The difference in toxic trace element levels seen in these pathologies has been discussed in terms of possible causes in light of current literature. The findings of our study support the hypothesis that toxic trace elements may be effective in lumbar disc degeneration.
Coil migration during pressure-cooker technique for cerebral AVM
Authors: Ismail Mustafa , H. Talib Sura , Albairmani Sama , Al-Khafaji Aktham O. , Al-Jehani Hosam , Hoz Samer S. 
Published: September 2023

Introduction: In recent decades, the endovascular treatment of cerebral arteriovenous malformations (AVMs) has advanced. However, it still carries risks of unanticipated complications. Coil migration is a reported complication of aneurysmal coiling procedures. Herein, we report a case of early intraprocedural coil migration during pressure cooker technique embolization of right thalamic AVM, discussing the management and potential explanations. The literature showed no report of coil migration after the pressure cooker technique in the form of coil-augmented Onyx injection technique (CAIT).
Case description: An otherwise healthy 26-year-old female suddenly developed a severe headache with no loss of consciousness. Computed tomography (CT) scan of the head illustrated intraventricular haemorrhage. Magnetic resonance imaging (MRI) showed the bag of worms' sign in the right thalamic area. The size and location of the AVM prompted the decision for multistage endovascular embolization using onyx. In the anterior circulation, the right A5 arterial feeder has a high flow which indicates the pressure cooker technique embolization in the form of CAIT. In the procedure, early detachment and migration of the coil occurred in the medial prefrontal branch through the anterior cerebral artery. No intervention to retrieve the coil was carried out because the detachment piece is small and lodged distally. Onyx was injected directly without the coil because of the risk of radiation to the patient. Otherwise, the intraprocedural and postprocedural courses went uneventful.
Conclusion: This is the first report of coil migration during the pressure cooker technique with CAIT for the right thalamic AVM.
Therapeutic advances in treatment of patients with neurofibromatosis type 1 and type 2
Authors: Popescu G. , Paslaru Francesca , Zaharia M.C. , Popescu M. , Gorgan R.M. 
Published: September 2023

Background: Neurofibromatosis type 1 (NF1) and neurofibromatosis type 2 (NF2) are rare tumoral suppressor syndromes, triggered by an abnormal mutation in a tumour suppressor gene (TSG) (1). Each of these syndromes represents an orphan disease (by itself), but the tumours encountered in these patients are the most frequent lesions of the nervous system. Between the two of these diseases, NF1 presents a greater risk of malignancy, hence the importance of an accurate diagnosis and distinction between the two pathological entities. The purpose of this paper is to describe our department's practice protocol with neurofibromatosis and review the current literature regarding clinical diagnosis and management of these complex diseases.
Methods: Our paper is a retrospective study that comprehends 25 patients with neurofibromatosis treated in our clinic between 2011 and 2018.
Results: Our study included 16 female patients (64%) and 9 male patients (36%). The mean age at presentation was 48,7 (range 14-72 years). There were 7 cases (28%) of NF1 and 18 cases (72%) of NF2. Seven cases (28%) had a positive family history and 18 patients did not (72%). The most common symptoms at presentation were hearing loss, vertigo, and headache.
Conclusions: Neurofibromatosis is a very complex disease in which the tumours may have an unforeseeable growth pattern. New tumours can grow over the years and the symptoms are unpredictable. Surgical treatment is best to be reserved for symptomatic tumours. Non-surgical procedures are also an important step of the treatment, but further studies are required to decide their effectiveness.
Intracranial aneurysms - a battle against time
Authors: Toader Corneliu , Marinescu Andrei Alexandru , Popa Andrei Adrian , Bratu Bogdan Gabriel , Ciurea Alexandru Vlad 
Published: September 2023

Introduction: Intracranial aneurysms consist in abnormal dilatation of the cerebral arteries, most frequently asymptomatic, with symptoms appearing in the case of aneurysm rupture. From an imaging point of view, a cranial CT scan shows the subarachnoid haemorrhage caused by aneurysm rupture and the “gold standard” for aneurysm diagnosis is cerebral angiography.
Case presentation: A 49 years-old female, Ukrainian refugee, presented with a unique comitial crisis and chronic headache. Following an MRI performed in Kiev, it was decided to perform a bilateral carotid and vertebral angiography in our clinic. Clinical and imagistic results showed a giant left middle cerebral artery aneurysm. Postoperative, the patient had a favourable neurological recovery, with no neurological deficits. Additionally, control angiography and CT scan highlight complete occlusion of the aneurysm and no complications.
Conclusions: Cerebral aneurysms represent a high-risk vascular condition that needs a CT scan and angiography to be precisely diagnosed, surgical clipping should be performed as soon as possible.
Surgical management of spinal cord hemangioblastoma
Authors: Popescu George , Zaharia Marius C. , Giovani Andrei , Miron Ioana , Vîjlănescu Cezar , Gorgan Radu M. 
Published: September 2023

Background. Hemangioblastomas are considered rare tumours that are located, in most cases, in the posterior cranial fossa. In most of cases, spinal hemangioblastomas are identified on the thoracic and cervical levels and can be associated in one-third of cases with von Hippel Lindau Syndrome.
Material and methods. In this paper, we are presenting our clinic`s experience with spinal hemangioblastomas and the follow-up of the patients in the last 10 years.
Results. In our study, we included six men and three women with a mean age of 45 years, ranging between 36 to 61 years. The mean hospitalization days was 17 days. Among nine patients, there were identified 12 tumors. Six patients presented cervical spine hemangioblastomas, two of them had thoracic spine lesions and in one case, the tumour was identified at the lumbar level. Furthermore, two patients presented multiple lesions. Two patients had been associated with von Hippel Lindau Syndrome. In all cases, surgery was the therapeutic approach.
Discussions. Despite the rapid advance of technology and the new alternatives for the treatment of these lesions, surgical resection of hemangioblastomas remains the gold standard treatment.
Conclusions. Hemangiolbastomas are benign tumours that can be associated with von Hippel Lindau. A whole-body scan is required to confirm or exclude this syndrome. Even though the surgical treatment for asymptomatic patients remains debatable, surgical intervention is the only treatment that can lead to the total removal of the tumour.
Bobble Head Doll Syndrome
Authors: Haro Yakouba , Zabsonre Sylvain D. , Sanou Abdoulaye , Zoungrana Inoussa , Biogo Joseph , Kabre Abel 
Published: September 2023

Introduction. Bobble head doll syndrome is a neurological syndrome characterized by abnormal involuntary movements of the head combining repetitive or episodic movements of 2 to 3 Hz back and forth in the anterior-posterior direction that can be assimilated to approval movements (yes-yes) and occasionally lateral rotations that can be assimilated to disapproval signs (no-no). It is a rare entity first described by Benton[1]. We describe three cases managed at the Yalgado Ouédraogo University Hospital in Burkina Faso.
Observations. Three children, one girl and two boys, aged respectively 5, 9 and 14 years were seen for involuntary abnormal head movements associating lateral rotations assimilated to signs of disapproval (no-no) in two cases, and back and forth movements of the head in one case. In the 14-year-old adolescent, there was also a picture of intracranial hypertension. Clinical examination revealed ataxia and macrocrania in both cases and a syndrome in 1 case. Imaging revealed triventricular hydrocephalus on aqueductal stenosis in all cases with an associated supra sellar cyst in 2 cases. The treatment consisted of endoscopic treatment in 2 cases and ventriculoperitoneal shunt in 1 case. Surgery allowed a considerable regression of involuntary movements of the head in the immediate postoperative period and a complete recovery in the long term.
Conclusion. The bobble head doll syndrome is a rare entity related to the consequences of chronic hydrocephalus responsible for abnormal movements whose management done well and early leads to favourable results.