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Charalampous C, Kofopoulos-Lymperis E, Pikouli A, Lykoudis P, Pararas N, Papaconstantinou D, Nastos C, Myoteri D, Dellaportas D. Gastric conduit reconstruction after esophagectomy with right gastroepiploic artery absence: a case report. J Surg Case Rep 2023; 2023:rjad474. [PMID: 37593193 PMCID: PMC10431203 DOI: 10.1093/jscr/rjad474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Accepted: 07/30/2023] [Indexed: 08/19/2023] Open
Abstract
Gastric conduit reconstruction is the standard choice after esophagectomy. Conduit's vascular supply is of primary importance mainly based on right gastroepiploic vessels. A 57-year-old male with absent right gastroepiploic artery, due to a duodenal bleeding ulcer treated with gastroduodenal artery ligation 10 years ago, was treated for gastroesophageal cancer and required esophagectomy. Surgical merits of this troublesome scenario are highlighted. Previous surgical history is highly important for patients requiring complex surgery as esophagectomy. The use of the stomach as conduit after esophagectomy is always the primary option; however vascular supply of it should not be compromised. Variations are rare and careful planning may overcome obstacles as in this case.
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Affiliation(s)
- C Charalampous
- 3 Department of Surgery, National and Kapodistrian University of Athens, Attikon University Hospital, Athens, Greece
| | - E Kofopoulos-Lymperis
- 3 Department of Surgery, National and Kapodistrian University of Athens, Attikon University Hospital, Athens, Greece
| | - A Pikouli
- 3 Department of Surgery, National and Kapodistrian University of Athens, Attikon University Hospital, Athens, Greece
| | - P Lykoudis
- 3 Department of Surgery, National and Kapodistrian University of Athens, Attikon University Hospital, Athens, Greece
| | - N Pararas
- 3 Department of Surgery, National and Kapodistrian University of Athens, Attikon University Hospital, Athens, Greece
| | - D Papaconstantinou
- 3 Department of Surgery, National and Kapodistrian University of Athens, Attikon University Hospital, Athens, Greece
| | - C Nastos
- 3 Department of Surgery, National and Kapodistrian University of Athens, Attikon University Hospital, Athens, Greece
| | - D Myoteri
- Pathology Department, National and Kapodistrian University of Athens, Aretaieion University Hospital, Athens, Greece
| | - D Dellaportas
- 3 Department of Surgery, National and Kapodistrian University of Athens, Attikon University Hospital, Athens, Greece
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Zogopoulos VL, Malatras A, Kyriakidis K, Charalampous C, Makrygianni EA, Duguez S, Koutsi MA, Pouliou M, Vasileiou C, Duddy WJ, Agelopoulos M, Chrousos GP, Iconomidou VA, Michalopoulos I. HGCA2.0: An RNA-Seq Based Webtool for Gene Coexpression Analysis in Homo sapiens. Cells 2023; 12:cells12030388. [PMID: 36766730 PMCID: PMC9913097 DOI: 10.3390/cells12030388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 01/09/2023] [Accepted: 01/19/2023] [Indexed: 01/24/2023] Open
Abstract
Genes with similar expression patterns in a set of diverse samples may be considered coexpressed. Human Gene Coexpression Analysis 2.0 (HGCA2.0) is a webtool which studies the global coexpression landscape of human genes. The website is based on the hierarchical clustering of 55,431 Homo sapiens genes based on a large-scale coexpression analysis of 3500 GTEx bulk RNA-Seq samples of healthy individuals, which were selected as the best representative samples of each tissue type. HGCA2.0 presents subclades of coexpressed genes to a gene of interest, and performs various built-in gene term enrichment analyses on the coexpressed genes, including gene ontologies, biological pathways, protein families, and diseases, while also being unique in revealing enriched transcription factors driving coexpression. HGCA2.0 has been successful in identifying not only genes with ubiquitous expression patterns, but also tissue-specific genes. Benchmarking showed that HGCA2.0 belongs to the top performing coexpression webtools, as shown by STRING analysis. HGCA2.0 creates working hypotheses for the discovery of gene partners or common biological processes that can be experimentally validated. It offers a simple and intuitive website design and user interface, as well as an API endpoint.
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Affiliation(s)
- Vasileios L. Zogopoulos
- Centre of Systems Biology, Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece
- Section of Cell Biology and Biophysics, Department of Biology, National and Kapodistrian University of Athens, 15701 Athens, Greece
| | - Apostolos Malatras
- Biobank.cy Center of Excellence in Biobanking and Biomedical Research, University of Cyprus, 2029 Nicosia, Cyprus
| | - Konstantinos Kyriakidis
- Centre of Systems Biology, Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece
- School of Pharmacy, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Chrysanthi Charalampous
- Centre of Basic Research, Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece
| | - Evanthia A. Makrygianni
- University Research Institute of Maternal and Child Health and Precision Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Stéphanie Duguez
- Personalised Medicine Centre, School of Medicine, Ulster University, Derry-Londonderry BT47 6SB, UK
| | - Marianna A. Koutsi
- Centre of Basic Research, Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece
| | - Marialena Pouliou
- Centre of Basic Research, Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece
| | - Christos Vasileiou
- Centre of Systems Biology, Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece
- Engineering Design and Computing Laboratory, ETH Zurich, 8092 Zurich, Switzerland
| | - William J. Duddy
- Personalised Medicine Centre, School of Medicine, Ulster University, Derry-Londonderry BT47 6SB, UK
| | - Marios Agelopoulos
- Centre of Basic Research, Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece
| | - George P. Chrousos
- University Research Institute of Maternal and Child Health and Precision Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Vassiliki A. Iconomidou
- Section of Cell Biology and Biophysics, Department of Biology, National and Kapodistrian University of Athens, 15701 Athens, Greece
| | - Ioannis Michalopoulos
- Centre of Systems Biology, Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece
- Correspondence:
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Troumpoukis D, Papadimitropoulou A, Charalampous C, Kogionou P, Palamaris K, Sarantis P, Serafimidis I. Targeting autophagy in pancreatic cancer: The cancer stem cell perspective. Front Oncol 2022; 12:1049436. [PMID: 36505808 PMCID: PMC9730023 DOI: 10.3389/fonc.2022.1049436] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 11/09/2022] [Indexed: 11/25/2022] Open
Abstract
Pancreatic cancer is currently the seventh leading cause of cancer-related deaths worldwide, with the estimated death toll approaching half a million annually. Pancreatic ductal adenocarcinoma (PDAC) is the most common (>90% of cases) and most aggressive form of pancreatic cancer, with extremely poor prognosis and very low survival rates. PDAC is initiated by genetic alterations, usually in the oncogene KRAS and tumor suppressors CDKN2A, TP53 and SMAD4, which in turn affect a number of downstream signaling pathways that regulate important cellular processes. One of the processes critically altered is autophagy, the mechanism by which cells clear away and recycle impaired or dysfunctional organelles, protein aggregates and other unwanted components, in order to achieve homeostasis. Autophagy plays conflicting roles in PDAC and has been shown to act both as a positive effector, promoting the survival of pancreatic tumor-initiating cells, and as a negative effector, increasing cytotoxicity in uncontrollably expanding cells. Recent findings have highlighted the importance of cancer stem cells in PDAC initiation, progression and metastasis. Pancreatic cancer stem cells (PaCSCs) comprise a small subpopulation of the pancreatic tumor, characterized by cellular plasticity and the ability to self-renew, and autophagy has been recognised as a key process in PaCSC maintenance and function, simultaneously suggesting new strategies to achieve their selective elimination. In this review we evaluate recent literature that links autophagy with PaCSCs and PDAC, focusing our discussion on the therapeutic implications of pharmacologically targeting autophagy in PaCSCs, as a means to treat PDAC.
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Affiliation(s)
- Dimitrios Troumpoukis
- Center of Basic Research, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | | | - Chrysanthi Charalampous
- Center of Basic Research, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Paraskevi Kogionou
- Center of Basic Research, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Kostas Palamaris
- First Department of Pathology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Panagiotis Sarantis
- Molecular Oncology Unit, Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Ioannis Serafimidis
- Center of Basic Research, Biomedical Research Foundation of the Academy of Athens, Athens, Greece,*Correspondence: Ioannis Serafimidis,
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Paschou M, Papazafiri P, Charalampous C, Zachariadis M, Dedos SG, Doxakis E. Neuronal microRNAs safeguard ER Ca 2+ homeostasis and attenuate the unfolded protein response upon stress. Cell Mol Life Sci 2022; 79:373. [PMID: 35727337 PMCID: PMC11073139 DOI: 10.1007/s00018-022-04398-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 04/23/2022] [Accepted: 05/21/2022] [Indexed: 11/30/2022]
Abstract
Ca2+ is a critical mediator of neurotransmitter release, synaptic plasticity, and gene expression, but also excitotoxicity. Ca2+ signaling and homeostasis are coordinated by an intricate network of channels, pumps, and calcium-binding proteins, which must be rapidly regulated at all expression levels. Τhe role of neuronal miRNAs in regulating ryanodine receptors (RyRs) and inositol 1,4,5-triphosphate receptors (IP3Rs) was investigated to understand the underlying mechanisms that modulate ER Ca2+ release. RyRs and IP3Rs are critical in mounting and propagating cytosolic Ca2+ signals by functionally linking the ER Ca2+ content, while excessive ER Ca2+ release via these receptors is central to the pathophysiology of a wide range of neurological diseases. Herein, two brain-restricted microRNAs, miR-124-3p and miR-153-3p, were found to bind to RyR1-3 and IP3R3 3'UTRs, and suppress their expression at both the mRNA and protein level. Ca2+ imaging studies revealed that overexpression of these miRNAs reduced ER Ca2+ release upon RyR/IP3R activation, but had no effect on [Ca2+]i under resting conditions. Interestingly, treatments that cause excessive ER Ca2+ release decreased expression of these miRNAs and increased expression of their target ER Ca2+ channels, indicating interdependence of miRNAs, RyRs, and IP3Rs in Ca2+ homeostasis. Furthermore, by maintaining the ER Ca2+ content, miR-124 and miR-153 reduced cytosolic Ca2+ overload and preserved protein-folding capacity by attenuating PERK signaling. Overall, this study shows that miR-124-3p and miR-153-3p fine-tune ER Ca2+ homeostasis and alleviate ER stress responses.
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Affiliation(s)
- Maria Paschou
- Center for Basic Research, Biomedical Research Foundation, Academy of Athens (BRFAA), Soranou Efesiou 4, 11527, Athens, Greece
- Department of Biology, National and Kapodistrian University of Athens (NKUA), Panepistimiopolis, 15784, Athens, Greece
| | - Panagiota Papazafiri
- Department of Biology, National and Kapodistrian University of Athens (NKUA), Panepistimiopolis, 15784, Athens, Greece
| | - Chrysanthi Charalampous
- Center for Basic Research, Biomedical Research Foundation, Academy of Athens (BRFAA), Soranou Efesiou 4, 11527, Athens, Greece
| | - Michael Zachariadis
- Department of Biology, National and Kapodistrian University of Athens (NKUA), Panepistimiopolis, 15784, Athens, Greece
- Material and Chemical Characterization Facility (MC2), Faculty of Science, University of Bath, Claverton Down, Bath, BA2 7AY, UK
| | - Skarlatos G Dedos
- Department of Biology, National and Kapodistrian University of Athens (NKUA), Panepistimiopolis, 15784, Athens, Greece.
| | - Epaminondas Doxakis
- Center for Basic Research, Biomedical Research Foundation, Academy of Athens (BRFAA), Soranou Efesiou 4, 11527, Athens, Greece.
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Zafeiris T, Charalampous C, Kaminsky A, Urselmann F, Rödig J. [Intracerebral hemorrhage as the cause of low-flow priapism : A rare association]. Unfallchirurg 2021; 124:80-85. [PMID: 32852604 DOI: 10.1007/s00113-020-00848-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Priapism is a painful erection of the penis lasting for more than 4h and is independent of sexual stimulation. It represents a urological emergency and necessitates rapid treatment. Etiologically, approximately 20% are caused by drugs, 50% are a combination of hematological diseases (e.g. sickle cell anemia), leukemia, injections in the corpora cavernosa, paraneoplastic processes and neurological or infectious causes. Ultimately, 30% have an idiopathic origin. Priapism as a result of traumatic intracerebral hemorrhage has so far rarely been described. This article presents the case of a 48-year-old male patient who presented to the emergency department with a traumatic subarachnoid hemorrhage. During the hospital stay the patient suffered from low-flow priapism, which was initially punctured and ultimately operatively treated.
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Affiliation(s)
- T Zafeiris
- Klinik für Orthopädie und Unfallchirurgie, Kliniken Maria Hilf GmbH, Mönchengladbach, Deutschland.
| | - C Charalampous
- Klinik für Nephrologie und Diabetologie, Kliniken Maria Hilf GmbH, Mönchengladbach, Deutschland
| | - A Kaminsky
- Klinik für Urologie, Kliniken Maria Hilf GmbH, Mönchengladbach, Deutschland
| | - F Urselmann
- Klinik für Orthopädie und Unfallchirurgie, Kliniken Maria Hilf GmbH, Mönchengladbach, Deutschland
| | - J Rödig
- Klinik für Orthopädie und Unfallchirurgie, Kliniken Maria Hilf GmbH, Mönchengladbach, Deutschland
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Vasileiadis P, Mavridis G, Keramidas A, Chardalidou D, Pervos I, Charalampous C. Psychiatric patient with Chilaiditi's syndrome. Clin Schizophr Relat Psychoses 2018:CSRP.VAMA.061518. [PMID: 29944423 DOI: 10.3371/csrp.vama.061518] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND Chilaiditi's sign is defined as the interposition of bowels between the liver and the right diaphragm. When the patient is symptomatic due to the intestinal obstruction, the case is referred to as Chilaiditi's syndrome. OBJECTIVE To emphasize the importance of accurate diagnose of Chilaiditi's syndrome in patients with psychotic disturbances. METHOD A 46 years old male was admitted to our department suffering from a constant epigastric and right upper quadrant pain with radiation to the right shoulder. The pain started 10 hours before the admission of the patient and was accompanied with vomiting. Patient has a history of schizophrenia and intellectual disability. He was in a stimulatory situation and unable to give any information about his state of health. RESULTS Patient was afebrile, tachycardic and laboratory results were normal. The chest and abdomen x-ray showed the Chilaiditi's sign. With the ultrasound procedure the case of the pneumoperitoneum was excluded. A conservative treatment with IV fluid hydration, pain management, diet modification, laxatives and enemas, was used. After a week of hospitalization, the patient felt well, having proper diet and regular evacuations and at the Chilaiditi's sign was no more observed. DISCUSSION The etiology of the Chilaiditi's syndrome is multifactoral and it has been reported that it is associated with psychotropic medication and intellectual disability. CONCLUSIONS The diagnosis of the syndrome is vital in order to avoid unnecessary and dangerous surgical interventions. Only few publications of a Chilaiditi syndrome in patients with psychosis are cited in the literature.
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Affiliation(s)
- P Vasileiadis
- Internal medicine department, General Hospital "G.Papanikolaou - Psychiatric Hospital Thessaloniki", Organic Unit of Psychiatric Hospital
| | - G Mavridis
- Internal medicine department, General Hospital "G.Papanikolaou - Psychiatric Hospital Thessaloniki", Organic Unit of Psychiatric Hospital
| | - A Keramidas
- Internal medicine department, General Hospital "G.Papanikolaou - Psychiatric Hospital Thessaloniki", Organic Unit of Psychiatric Hospital
| | - D Chardalidou
- Radiology department, General Hospital "G.Papanikolaou - Psychiatric Hospital Thessaloniki", Organic Unit of Psychiatric Hospital
| | - I Pervos
- Internal medicine department, General Hospital "G.Papanikolaou - Psychiatric Hospital Thessaloniki", Organic Unit of Psychiatric Hospital
| | - C Charalampous
- Internal medicine department, General Hospital "G.Papanikolaou - Psychiatric Hospital Thessaloniki", Organic Unit of Psychiatric Hospital
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Patiakas S, Charalampous C. 704 DETERMINATION OF HOMOCYSTEINE VALUES ON OBESE PATIENTS ASSOCIATED WITH NUTRITION. ATHEROSCLEROSIS SUPP 2011. [DOI: 10.1016/s1567-5688(11)70705-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Nageh-Armanios M, De Paula Santos L, Ladeia AM, Atie J, Ferrari FP, Ferrandi FM, Barassi BP, Florio FM, Tripodi TM, Reina RC, Molinari MI, Bianchi BG, Husti Z, Chadaide SZ, Kohajda ZS, Juhasz V, Saghy L, Jost N, Varro A, Baczko I, Quintanilla JG, Moreno Planas J, Molina-Morua R, Garcia-Torrent MJ, Archondo T, Mironov S, Macaya C, Perez-Villacastin J, Letsas K, Charalampous C, Korantzopoulos P, Bramos D, Spoulos A, Kollias G, Efremidis M, Sideris A. Bench to bedside application of ... Europace 2011. [DOI: 10.1093/europace/eur223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Patiakas S, Charalampous C. 105 STUDY ON EFFECT OF COMBINING ORLISTATE–EZETIMIDE ON LIPIDEMIC PROFILE ON OBESE PATIENTS. ATHEROSCLEROSIS SUPP 2011. [DOI: 10.1016/s1567-5688(11)70106-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Charalampous C, Patiakas S. MS112 CORRELATION OF THE LIPIDEMIC PROFILE IN THE GENERAL POPULATION WITH AGE AND GENDER IN THE RURAL OF KASTORIA OF GREECE. ATHEROSCLEROSIS SUPP 2010. [DOI: 10.1016/s1567-5688(10)70613-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Charalampous C, Patiakas S. MS270 LABORATORY EVALUATION OF HYPERURICEMIA AND STUDY OF DISEASE'S OUTCOME IN PATIENTS OF THE NORTH GREECE. ATHEROSCLEROSIS SUPP 2010. [DOI: 10.1016/s1567-5688(10)70771-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Charalampous C, Patiakas S, Pavlidou E, Savvidou E. MS272 LIPIDEMIC PROFILE STUDY OF WOMEN AFTER LONG-TERM ADMINISTRATION OF CONTRACEPTIVE PILLS. ATHEROSCLEROSIS SUPP 2010. [DOI: 10.1016/s1567-5688(10)70773-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Koulas SG, Zikos N, Charalampous C, Christodoulou K, Sakkas L, Katsamakis N. Management of gastrointestinal bezoars: an analysis of 23 cases. Int Surg 2008; 93:95-98. [PMID: 18998288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023] Open
Abstract
Bezoars (BZs) represent the most common foreign bodies of the gastrointestinal tract. Clinical symptoms varying from no symptoms to acute abdominal obstruction. Our goal is to present our experience with a review of the literature. In this study, 23 patients with BZs of the upper gastrointestinal system (GIS) were treated in the surgical department of two generals hospitals in northwest Greece. The size of BZs, localization, predisposing factors, clinical symptoms, morbidity, and mortality were analyzed. Conservative treatment, endoscopic procedures, and surgical treatment were also parameters under consideration. Nineteen patients presenting with phytobezoars and four female patients presented with psychological disorders and mental retardation with trichobezoars. More than one half of them (57%) had previous gastric surgery. Surgical morbidity rate was 28%, whereas the endoscopic morbidity was 11%. Mortality was 4% and 0% for the surgical and endoscopic groups, respectively. The differences in morbidity and mortality rates between the two groups were not statistically significant. BZs are commonly found in the stomach and small intestine, especially in patients who underwent previous gastric surgery. Small bowel obstruction is the most common complication. When uncomplicated, endoscopic or surgical removal of the BZs can be performed easy and effectively.
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Affiliation(s)
- S G Koulas
- Department of Surgery, General Hospital of Corfu, Corfu, Greece.
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