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Gurleyik G, Aktekin A, Aker F, Karagulle H, Saglamc A. Medical and surgical treatment of idiopathic granulomatous lobular mastitis: a benign inflammatory disease mimicking invasive carcinoma. J Breast Cancer 2012; 15:119-123. [PMID: 22493638 PMCID: PMC3318163 DOI: 10.4048/jbc.2012.15.1.119] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2011] [Accepted: 12/20/2011] [Indexed: 02/06/2023] [Imported: 02/20/2025] Open
Abstract
PURPOSE Idiopathic granulomatous lobular mastitis (IGLM) is a rare chronic inflammatory disease of the breast with obscure etiology that mimics invasive carcinoma both clinically and radiologically. The treatment of IGLM remains controversial. The aim of proper management is to use a combination of medical and surgical treatment of this benign condition to achieve a good cosmetic result and low recurrence rate. METHODS A retrospective analysis of 19 patients with IGLM is performed based on the findings of clinical, radiological, and pathological examinations. The results of two treatments are presented: medical treatment with oral corticosteroids, and consecutive surgical excision after a follow-up period of 20 months (range, 6-75 months). RESULTS The majority of patients treated in this paper were young (mean, 34 years) parous women with a history of hormonal medication use. The main clinical finding is large, irregular, and painful mass. Hypoechoic lobulated, irregular tubular or oval shaped masses had been imaged by ultrasound. Mammographic findings were an ill-defined mass, enlarged axillary lymph nodes, asymmetric density, and architectural distortion. Diagnoses of IGLM had been established by cytological or histological examination. Symptoms subside and inflammatory changes regressed with medical treatment. The remaining lesions were excised by consecutive breast conserving surgery. The disease recurred in one patient during the follow-up period. CONCLUSION IGLM is an inflammatory breast disease found in young women who present with a large painful irregular mass, which mimics carcinoma, as a physical change. Breast imaging modalities are not helpful to differentiate IGLM from invasive cancer. The correct diagnosis is established by cytological or histological examination. Medical treatment with corticosteroids provides significant regression of the inflammatory disease, allowing more conservative surgery. Consecutive surgical excision of the remaining lesions with good cosmetic results provides definitive treatment and reduces the risk of recurrence.
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Muftuoglu MAT, Aktekin A, Ozdemir NC, Saglam A. Liver injury in sepsis and abdominal compartment syndrome in rats. Surg Today 2006; 36:519-524. [PMID: 16715421 DOI: 10.1007/s00595-006-3196-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2005] [Accepted: 11/15/2005] [Indexed: 01/21/2023] [Imported: 02/20/2025]
Abstract
PURPOSE To evaluate the extent of liver injury after the onset of sepsis and abdominal compartment syndrome (ACS) in rats. METHODS We divided 60 rats into four groups of 15. Group 1 was the sham group. In group 2, sepsis was induced by cecal puncture and ligation; in group 3, ACS was created by placing a catheter in the abdominal cavity; and in group 4, both sepsis and ACS were induced simultaneously. Liver sections stained with hematoxylin-eosin were assessed pathologically, and liver injury was defined by the following five pathological patterns: spotty necrosis, capsular inflammation, portal inflammation, ballooning degeneration, and steatosis of the liver. We revised a new scoring system, called "Hepatic Injury Severity Scoring" (HISS), to evaluate the liver injury in sepsis, ACS, and sepsis plus ACS. Blood was collected for liver function tests. RESULTS The total scores of groups 1, 2, 3, and 4 were 18, 92, 86, and 123, respectively. There were significant differences in histopathologic grade between group 1 and groups 2, 3, and 4 (P < 0.05). Aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase, and total bilirubin levels were significantly higher in group 4 than in the other three groups. CONCLUSIONS The findings of this study showed that liver function severely affected the onset of ACS and sepsis. The liver injury resulting from sepsis plus ACS is more severe than that resulting from either one independently.
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Aydemir Sezer U, Sanko V, Gulmez M, Aru B, Sayman E, Aktekin A, Vardar Aker F, Yanıkkaya Demirel G, Sezer S. Polypropylene composite hernia mesh with anti-adhesion layer composed of polycaprolactone and oxidized regenerated cellulose. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 99:1141-1152. [PMID: 30889648 DOI: 10.1016/j.msec.2019.02.064] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 01/24/2019] [Accepted: 02/16/2019] [Indexed: 01/13/2023] [Imported: 02/20/2025]
Abstract
Hernia surgeries are at the top of the general surgery operations. However, visceral adhesion, which is one of the worst complications of these operations, is still a major problem. One of the most preferred methods to prevent adhesion is the use of biomaterials. Polypropylene (PP) mesh is frequently preferred product in clinical applications owing to its mechanically robust structure against deformation within the body. However, PP meshes do not have anti-adhesive properties. Oxidized regenerated cellulose (ORC), on the other hand, is one of the most preferred products in preventing the adhesion in clinical use. ORC is not easily processable due to solubility limitations; and it must be used externally. In this study, for the first time, we designed a composite mesh structure with ORC and produced an antibacterial and anti-adhesive double-sided mesh by electro-spinning ORC micro-particles with poly(ε‑caprolactone) (PCL) on PP mesh to form a composite structure. We conducted in vitro cell culture studies to determine bio-compatibility performances. We evaluated the anti-adhesion and comprehensive bio-compatibility studies through in vivo experiments. The results revealed that ORC presence and optimization of ORC degradation by coating with PCL play an important role in adhesion prevention and introduced a product prototype with efficient anti-adhesion properties.
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Gurleyik G, Gurleyik E, Aker F, Aktekin A, Emir S, Gungor O, Saglam A. Lymphovascular invasion, as a prognostic marker in patients with invasive breast cancer. Acta Chir Belg 2007; 107:284-287. [PMID: 17685254 DOI: 10.1080/00015458.2007.11680057] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] [Imported: 02/20/2025]
Abstract
PURPOSE The markers of prognosis are used to predict the clinical course of disease and the outcome for patients with invasive breast cancer. Our aim is to investigate the relationship of peritumoural lymphovascular invasion (LVI) with well-known prognostic markers. PATIENTS AND METHODS Eighty-one surgically treated patients with invasive breast cancer were evaluated in this study during a mean follow-up period of 46 months (12-72). The patient's age (menopausal status), tumour size, nuclear grade, axillary lymph node involvement, and hormone receptor status were determined as markers of the prognosis. The relationship of LVI with these markers was established. RESULTS Except for menopausal status (p = 0.25) a close relationship was found between the presence of LVI and studied prognostic factors. LVI was positive in 29% of T1, 54% of T2 (p = 0.028) and 100% of T3 tumours (p = 0.002). The rate of LVI (+) has increased gradually as 0%, 38% and 77% (p = 0.001) with grades 1, 2 and 3 respectively. Positive LVI has been determined in 85% (p < 0.0001) and 73% (p = 0.0004) of oestrogen and progesterone receptor negative tumours respectively. LVI was present in 14% and 73% (p < 0.0001) of patients with negative and positive axilla respectively. Metastatic cancer caused mortality in seven patients of whom 86% had more than four involved axillary nodes, and 100% LVI (+). CONCLUSION The high rate of positive LVI shows a close relationship with known markers of poor prognosis. The presence of LVI can predict a worse outcome for patients with invasive breast cancer. LVI may be used as an indicator of aggressive behaviour, metastatic ability (nodal and systemic) of the primary malignancy.
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Odabasi M, Yildiz KM, Cengiz E, Hasan AH, Gunay E, Ozkan E, Aktekin A, Kaya B, Muftuoglu TMA. Treatment of ampullary neuroendocrine tumor by endoscopic snare papillectomy. AMERICAN JOURNAL OF CASE REPORTS 2013; 14:439-443. [PMID: 24179583 PMCID: PMC3813632 DOI: 10.12659/ajcr.889601] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Accepted: 08/19/2013] [Indexed: 12/20/2022] [Imported: 02/20/2025]
Abstract
PATIENT Female, 45 FINAL DIAGNOSIS: Neuroendocrine tumor Symptoms: Abdominal pain Medication: - Clinical Procedure: - Specialty: Gastroenterology and Hepatology. OBJECTIVE Unusual setting of medical care. BACKGROUND Neuroendocrine tumor of the ampulla of Vater is extremely rare and is generally a low-grade endocrine cell tumor. The merits of radical vs. local resection remain uncertain. CASE REPORT A 45-year-old female patient presented with abdominal pain lasting for 2 months. Papilla that was tumor-like macroscopically was seen in the second part of the duodenum in endoscopic retrograde cholangiopancreatography. Biopsy was histologically confirmed as a low-grade neuroendocrine tumor. No lymphadenopathy or visceral metastasis was found on an abdominal CT scan, In-111 octreotide scan, and EUS. The ampulla was removed by endoscopic snare papillectomy. All margins of resection were negative for tumor. CONCLUSIONS Endoscopic snare papillectomy may be the first step in the management of neuroendocrine tumors of the ampulla of Vater in high-risk surgical candidates and selected patients such as those with a well differentiated, low-grade, small tumor without regional/ distant metastasis. However, it can also be used in younger patients who wish to avoid surgical resection.
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Aydemir Sezer U, Sanko V, Gulmez M, Sayman E, Aru B, Yuksekdag ZN, Aktekin A, Vardar Aker F, Sezer S. A Polypropylene-Integrated Bilayer Composite Mesh with Bactericidal and Antiadhesive Efficiency for Hernia Operations. ACS Biomater Sci Eng 2017; 3:3662-3674. [PMID: 33445401 DOI: 10.1021/acsbiomaterials.7b00757] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] [Imported: 02/20/2025]
Abstract
Polypropylene (PP) mesh has been widely used in hernia fixation operations for more than one hundred years, and peritoneal adhesion is still one of the main complications after hernia fixation operations. For preventing peritoneal adhesion, many solutions have been offered, including gel systems, adhesion barrier membranes, and bilayer meshes. Among these, bilayer meshes come to the forefront as they serve for both hernia repair and adhesion prevention. In this study, we developed an easy and effective method to produce a multifunctional PP-integrated bilayer mesh composed of poly(lactic-co-glycolic acid) and chitosan with no need for neutralization. We made the composite mesh by electrospinning a layer onto the PP mesh. We evaluated the material characteristics, in vitro bactericidal activities, and interactions between the cells and materials. Then, we conducted in vivo efficiency studies. The results proved that the PP-integrated bilayer composite mesh is bactericidal against Escherichia coli and Staphylococcus aureus, is tissue-compatible, and supremely prevents adhesion.
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Aydemir Sezer U, Kocer Z, Aru B, Demirel GY, Gulmez M, Aktekin A, Ozkara S, Sezer S. Combination of gelatin and tranexamic acid offers improved haemostasis and safe use on internal hemorrhage control. RSC Adv 2016; 6:95189-95198. [DOI: 10.1039/c6ra16790j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2025] [Imported: 02/20/2025] Open
Abstract
The hemostatic effect of gelatin microparticles were enhanced by combining tranexamic acid and the material presents safe use for internal use.
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Gurleyik G, Aker F, Aktekin A, Saglam A. Tumor characteristics influencing non-sentinel lymph node involvement in clinically node negative patients with breast cancer. J Breast Cancer 2011; 14:124-128. [PMID: 21847407 PMCID: PMC3148535 DOI: 10.4048/jbc.2011.14.2.124] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2010] [Accepted: 04/18/2011] [Indexed: 11/30/2022] [Imported: 02/20/2025] Open
Abstract
PURPOSE The negative sentinel lymph node (SLN) biopsy avoids conventional axillary dissection in patients with breast cancer with clinically negative axilla. Despite negative SLN, there is a risk of leaving involved non-SLN behind in the axilla. We investigated the predictive power of tumor characteristics for non-SLN metastasis. METHODS Lymphatic mapping with blue dye method for SLN biopsy and level 1-2 axillary dissections were performed to establish axillary status in 59 patients with T1 and T2 breast cancer and clinically negative axilla. Tumor's characteristics were histopathologically established to assess their association with non-SLN metastasis. RESULTS The axilla was malignant in 23 (39%) patients. The SLN alone was metastatic in 10, both SLN and non-SLN in 9, and non-SLN alone in 4 (7%) patients. The false negative rate for SLN biopsy was 10% in our series. The rate of positive non-SLN was found as 0% in T1a-b, 19% in T1c, and 40% in T2 tumors (p=0.035). Lymphovascular invasion was positive in 14 (61%) patients with axillary metastasis (p<0.001), and in 10 (77%) patients with non-SLN involvement (p<0.001). CONCLUSION We concluded that there was a small risk of involved non-SLN despite negative SLN. Tumor size (near or greater than 2 cm) was significantly associated with non-SLN metastasis. Peritumoral lymphovascular invasion was a positive predictor of the metastatic involvement in non-SLNs.
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Tolga Muftuoglu MA, Aktekin A, Gurleyik G, Saglam A. A ruptured aneurysm of superior mesenteric artery to duodenum and reconstruction with saphenous vein graft. Eur J Vasc Endovasc Surg 2003; 25:590-591. [PMID: 12787705 DOI: 10.1053/ejvs.2002.1844] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] [Imported: 02/20/2025]
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Aktekin A, Sahin I, Aydemir Sezer U, Gulmez M, Ozkara S, Sezer S. Carboxymethyl cellulose/oxidized regenerated cellulose hydrogels as adhesion barriers: comparative study with different molecular weights and substitution degrees. CELLULOSE 2016; 23:3145-3156. [DOI: 10.1007/s10570-016-1014-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2025] [Imported: 02/20/2025]
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Odabasi M, Arslan C, Abuoglu H, Gunay E, Yildiz MK, Eris C, Ozkan E, Aktekin A, Muftuoglu MAT. An unusual presentation of perforated appendicitis in epigastric region. Int J Surg Case Rep 2013; 5:76-78. [PMID: 24441442 PMCID: PMC3921649 DOI: 10.1016/j.ijscr.2013.12.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Revised: 11/07/2013] [Accepted: 12/05/2013] [Indexed: 12/27/2022] [Imported: 02/20/2025] Open
Abstract
INTRODUCTION Atypical presentations of appendix have been reported including backache, left lower quadrant pain and groin pain from a strangulated femoral hernia containing the appendix. We report a case presenting an epigastric pain that was diagnosed after computed tomography as a perforated appendicitis on intestinal malrotation. PRESENTATION OF CASE A 27-year-old man was admitted with a three-day history of epigastric pain. Physical examination revealed tenderness and defense on palpation of epigastric region. There was a left subcostal incision with the history of diaphragmatic hernia repair when the patient was 3 days old. He had an intestinal malrotation with the cecum fixed at the epigastric region and the inflamed appendix extending beside the left lobe of liver. DISCUSSION While appendicitis is the most common abdominal disease requiring surgical intervention seen in the emergency room setting, intestinal malrotation is relatively uncommon. When patients with asymptomatic undiagnosed gastrointestinal malrotation clinically present with abdominal pain, accurate diagnosis and definitive therapy may be delayed, possibly increasing the risk of morbidity and mortality. CONCLUSION Atypical presentations of acute appendicitis should be kept in mind in patients with abdominal pain in emergency room especially in patients with previous childhood operation for diaphragmatic hernia.
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Odabasi M, Abuoglu HH, Arslan C, Gunay E, Yildiz MK, Eris C, Ozkan E, Aktekin A, Muftuoglu T. Asymptomatic partial splenic infarction in laparoscopic floppy Nissen fundoplication and brief literature review. Int Surg 2014; 99:291-294. [PMID: 24833155 PMCID: PMC4027916 DOI: 10.9738/intsurg-d-13-00250.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] [Imported: 02/20/2025] Open
Abstract
Short gastric vessels are divided during the laparoscopic Nissen fundoplication resulting in splenic infarct in some cases. We report a case of laparoscopic floppy Nissen fundoplication with splenic infarct that was recognized during the procedure and provide a brief literature review. The patient underwent a laparoscopic floppy Nissen fundoplication. We observed a partial infarction of the spleen. She reported no pain. A follow-up computed tomography scan showed an infarct, and a 3-month abdominal ultrasound showed complete resolution. Peripheral splenic arterial branches have very little collateral circulation. When these vessels are occluded or injured, an area of infarction will occur immediately. Management strategies included a trial of conservative management and splenectomy for persistent symptoms or complications resulting from splenic infarct. In conclusion, we believe that the real incidence is probably much higher because many cases of SI may have gone undiagnosed during or following an operation, because some patients are asymptomatic. We propose to check spleen carefully for the possibility of splenic infarct.
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Aktekın A, Özkara S, Merıç K, Günay Gürleyık M, Aker F, Sağlam A. Plexiform schwannoma of the duodenum accompanying pyloric stenosis: report of a case. THE TURKISH JOURNAL OF GASTROENTEROLOGY : THE OFFICIAL JOURNAL OF TURKISH SOCIETY OF GASTROENTEROLOGY 2012; 23:385-389. [PMID: 22965512 DOI: 10.4318/tjg.2012.0403] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] [Imported: 08/29/2023]
Abstract
Plexiform schwannoma is a benign peripheral nerve sheath tumor and is composed of Schwann cells arranged in a plexiform pattern. Most plexiform schwannomas are skin tumors, and there has been no case report of this tumor originating in the duodenum. We describe the first known case of plexiform schwannoma of the duodenum. A 60-year-old man presented with a short history of food intolerance, epigastric discomfort, fullness and bloatedness, sometimes vomiting, and weight loss, without any clinical picture of neurofibromatosis. Upper gastrointestinal endoscopy revealed pyloric stenosis with normal mucosal lining. The computed tomography demonstrated circumferentially and concentrically thickened pylorus up to 18 mm with narrowed lumen and limited contrast passage. Antrectomy and gastrojejunostomy were performed due to unknown etiology of the obstruction. The cut surface of the lesion revealed thickened pylorus up to 15 mm in a circumferential manner. It contained a 5 mm tumor consisted of multiple white nodules in the submucosal and subserosal layers with overlying duodenal mucosa. Microscopic examination revealed nodular structures composed of spindle cells within fascicular pattern without any atypia or mitosis. Immunohistochemical examination revealed that the cells diffusely and strongly expressed S100 proteins in a nuclear and cytoplasmic pattern, but not CD117, smooth muscle actin, desmin, or CD34, confirming plexiform schwannoma.
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Aktekin A, Torun M, Ustaalioğlu BBO, Ozkara S, Cakır O, Muftuoglu T. The effects of systemic inflammatory response on prognosis of pancreatic ductal adenocarcinoma. Ann Hepatobiliary Pancreat Surg 2019; 23:155-162. [PMID: 31225417 PMCID: PMC6558139 DOI: 10.14701/ahbps.2019.23.2.155] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 04/30/2019] [Accepted: 05/02/2019] [Indexed: 12/17/2022] [Imported: 08/29/2023] Open
Abstract
BACKGROUNDS/AIMS The aim of this study was to investigate the prognostic significance of neutrophyil-lymphocyte ratio (NLR), platelet-lymphocyte ratio (PLR), CRP and CA19-9 in patients were diagnosed with pancreatic ductal adenocarcinoma (PDAC) to better verify pre-operative risk stratification and management. METHODS This retrospective study included data from 133 consecutive patients with PDAC, who were treated between 2013 and 2015. PDAC diagnosis was made by cytology or assumed by radiological assessment or surgical resection samples. All clinico-pathological data were retrieved from medical records at our institution. The laboratory data were obtained before any treatment modality. Dates of death were obtained from the central registry. RESULTS There was a statistically significant relation between radiological staging and CA19-9 and survival (p=0.001, p=0.005) and there are significant differences in CA19-9 level between stage I and III, I and IV, II and III, and II and IV. Both CRP and CA19-9 levels were statistically significantly higher in patients with radiological lymph node metastasis than patients with N0 disease (p=0.037, p=0.026). NLR and CA19-9 levels were also higher in metastatic disease (p=0.032, p=0.007). According to Spearman's correlation analysis, we found in all patients that there was a negative correlation between the survival time and CRP and neutrophil count (p=0.019, p=0.011). CONCLUSIONS Preoperative CRP, CA19-9 and NLR are simple, repeatable, inexpensive and well available marker, can give information on lymph node and solid organ metastasis and survival, give clues to prognosis and be useful in clinical staging of patients with PDAC.
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Ozcelik-Kose A, Imamoglu S, Aktekin A, Balci S, Yıldız MB, Ozturk Y, Yenerel NM. Effect of bariatric surgery on macular and peripapillary choroidal structures in young patients with morbid obesity. CANADIAN JOURNAL OF OPHTHALMOLOGY 2022; 57:370-375. [PMID: 35469815 DOI: 10.1016/j.jcjo.2022.03.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 02/04/2022] [Accepted: 03/24/2022] [Indexed: 10/18/2022] [Imported: 02/20/2025]
Abstract
OBJECTIVE To examine the effect of bariatric surgery on the macular and peripapillary choroid in the late postoperative period in young patients with morbid obesity and compare them with a healthy control group. METHODS This prospective controlled study included 50 eyes of 25 young patients with morbid obesity and 50 eyes of 25 age and sex-matched healthy controls. Sleeve gastrectomy was performed on all patients with obesity. Preoperative and 6-month postoperative macular and peripapillary choroidal thickness, total choroidal area (TCA), luminal area (LA), and choroidal vascularity index (CVI) were performed. Results were compared with healthy controls by using enhanced depth imaging optical coherence tomography. RESULTS Choroidal thickness and CVI values were smaller in patients with obesity in both macular and peripapillary areas compared with the healthy control group (both p < 0.001). There was a statistically significant increase in the macular and peripapillary choroidal thickness of patients with obesity when the preoperative and the postoperative 6-month values after bariatric surgery were compared (both p < 0.001). Also, it was found that bariatric surgery increased TCA and LA values in the macular and all sectors of peripapillary areas (all p < 0.001), and CVI values in the temporal and nasal peripapillary sectors (p = 0.007, p = 0.012, respectively). CONCLUSIONS Bariatric surgery was found to increase the macular and peripapillary choroidal thickness and the nasal and temporal peripapillary CVI values in young patients with morbid obesity in the late period. To the best of our knowledge, the current study has shown for the first time that bariatric surgery affects peripapillary choroid and CVI values.
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Yasar S, Gurleyik G, Sabuncuoglu Y, Aktekin A, Yasar B, Serdar ZA. Paget's Disease of the Breast in a Patient with Amyopathic Dermatomyositis. Case Rep Med 2012; 2012:515691. [PMID: 23049567 PMCID: PMC3459358 DOI: 10.1155/2012/515691] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2012] [Revised: 08/23/2012] [Accepted: 08/26/2012] [Indexed: 11/18/2022] [Imported: 02/20/2025] Open
Abstract
Amyopathic dermatomyositis (AD) can be a part of paraneoplastic syndrome of an underlying malignancy. Paget's disease is a rare form of breast cancer. We present a very rare case of Paget's disease associated with AD. Paget's disease has been diagnosed in a patient with AD who is under surveillance of dermatology department. The patient has undergone central lumpectomy with removal of the nipple-areola complex and sentinel lymph node biopsy. Surgical margins after lumpectomy and sentinel node biopsy were negative. The whole breast irradiation was performed after surgery. The patient receives medical treatment for AD of which lesions regressed in 1 year during the follow-up period. This is a very rare case of Paget's disease diagnosed in a patient with AD. Female patients with dermatomyositis have been absolutely recommended to undergo screening for breast and gynaecological malignancies. AD may be an early finding of primary or recurrent malignancy of the breast.
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Aktekin A, Gurleyik G, Odabasi M, Muftuoglu T, Saglam A. Trans-cystic biliary catheterization and decompression in liver and biliary surgery. HEPATO-GASTROENTEROLOGY 2013; 60:985-988. [PMID: 23491927 DOI: 10.5754/hge11015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023] [Imported: 02/20/2025]
Abstract
BACKGROUND/AIMS Trans-cystic biliary catheterization (TCBC) and decompression may be employed to prevent biliary leakage after liver and biliary surgery. METHODOLOGY We evaluated medical records of patients that required trans-cystic biliary catheterization between 2001-2009; we retrospectively review prospectively collected data, including patient demographics, operational procedures, cholangiographies and post-operative follow-ups. RESULTS Mean age was 54 years (16-80 years) and 63% of patients were female. TCBC was employed only during the operation in 13 patients due to biliary leakage suspicion, but no leakage was detected and cystic canal is ligatured after catheter removal at the same operation. In remaining patients, catheters were placed in the cystic duct and blocked in 1-12 days. Biliary fistula developed in five patients and bile leakage was stopped spontaneously under trans-cystic biliary catheterization and decompression. Three patients were diagnosed to have retained common bile duct stones by cholangiographies and all removed with endoscopic retrograde cholangiopancreatography. Catheters were withdrawn at 19-21 days post-operation. We experienced no TCBC related complications. CONCLUSIONS Despite risks and difficulty of TCBC, it helps to demonstrate bile leak sites via trans-cystic flushing and to repair them as well as taking cholangiography, recognizing intra-luminal pathology, and also decompressing biliary system.
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Gurleyik G, Ozturk E, Gurleyik E, Aker F, Aktekin A, Ozkara S, Saglam A. Prostaglandins E1 and E2 analogues ameliorate mucosal injury secondary to distal colonic obstruction. J INVEST SURG 2003; 16:283-288. [PMID: 14527886 DOI: 10.1080/08941930390230423] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] [Imported: 02/20/2025]
Abstract
After colonic obstruction, increased intraluminal pressure may impair blood circulation and cause mucosal injury that sometimes progresses to perforation. This experimental study aims to evaluated effects of prostaglandin E (PGE) analogues in order to prevent mucosal injury secondary to distal colonic obstruction. This study was carried out on 40 male Wistar rats equally divided into four groups: group 1, control; group 2, colonic obstruction by ligation of the sigmoid colon; group 3, obstruction and administration of PGE1; group 4, obstruction and administration of PGE 2. Mucosal structural changes were assessed and scored by histopathological examination at 24 h postoperatively. The thickness of the mucosal layer of the cecal wall was measured as 179.3 and 122 microm (p <.001) in the control and obstruction alone group, respectively. Mucosal thickness was preserved by PGE1 (170 microm) and PGE2 (157.3 microm) administration. The mean damage score was 0.73 in the control and 3.3 (p <.001) in the obstruction alone group. This score was significantly lower in obstruction groups treated with both PGE1 and PGE2, 1.13 and 1.26 respectively (p <.001). Both PGE1 and PGE2 (PGE1 better than PGE2) ameliorate mucosal injury during distal colonic obstruction. We concluded that the administration of PGE analogues in case of mechanical obstruction of the left colon was beneficial for preserving the structure of the mucosal layer.
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Aktekin A, Özkara S, Gürleyik G, Odabaşi M, Müftüoğlu T, Sağlam A. The Factors Effecting Lymphovascular Invasion in Adenocarcinoma of the Colon and Rectum. Indian J Surg 2015; 77:314-318. [PMID: 26730017 PMCID: PMC4692880 DOI: 10.1007/s12262-013-0816-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2012] [Accepted: 01/15/2013] [Indexed: 12/13/2022] [Imported: 08/29/2023] Open
Abstract
Adenocarcinomas of the colon and rectum are the most common gastrointestinal malignancy, and lymph node metastases are established as a prognostic factor. Lymphovascular invasion has been recognized as an indication of lymph node metastases. This prompted us to investigate the features of primary tumor that may serve as a risk factor for lymphovascular invasion in colorectal carcinoma. Clinical and pathologic tissue data of colorectal carcinoma treated in our hospital were retrieved from the computer files at Haydarpasa Numune Education and Research Hospital, from June 1998 to December 2010, retrospectively. We excluded all patients who have two-thirds distal rectal carcinoma to rule out neoadjuvant treatment bias. Tissues from the specimens were stained with standard hematoxylin and eosin. Clinical data including age and sex of patient, location and diameter of tumor, perineural invasion, peritumoral lymphocytic infiltration, tumor grade, lymphovascular invasion, Pathologic T level (pT), and lymph node metastasis were recorded. Lymphovascular invasion was present only in 43 patients out of 108. Only pT and lymph node metastases were found to be statistically significant related to lymphovascular invasion (p = 0.04 and p < 0.001). Perineural invasion, pT, and peritumoral lymphocytic infiltration are the factors with p < 0.2 in the univariate analysis that were investigated with multivariate analysis, but no factor was found as an independent prognostic factor for lymphovascular invasion. Lymphovascular invasion is significantly related to lymph node metastases. Only pT is found as a factor that increases the lymphovascular invasion.
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Aktekin A, Kazan K, Gunes P, Yekrek M, Muftuoglu T, Saglam A. Hematological, Biochemical, and Immunological Laboratory and Histomorphological Effects of Sleeve Gastrectomy on Female Rats. Indian J Surg 2015; 77:557-562. [PMID: 26730064 PMCID: PMC4692935 DOI: 10.1007/s12262-013-0921-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Accepted: 04/22/2013] [Indexed: 12/19/2022] [Imported: 02/20/2025] Open
Abstract
Restriction of food intake leads to immunologic and histomorphological changes in rats demonstrated by Moriyama. This study is planned to show how sleeve gastrectomy restricts food intake and its effects on biochemical liver function, immunologic and hematologic laboratory parameters, and histomorphological changes in rats. We used sleeve gastrectomy model on seven young adult female rats and compared study group with sham and control groups. Food consumption of rats was measured. All rats were sacrificed on the 50th day, and blood and tissue samples were collected. There was a significant low food intake in sleeve gastrectomy group (p = 0.013). No differences were observed on hematologic, biochemical, and immunologic laboratory parameters between groups. Toxicity parameters in liver samples such as cytoplasmic atrophy, single-cell hepatocellular necrosis, and necrotic eosinophilic cells were significantly high in sleeve gastrectomy group (p = 0.005). Histomorphological examination of the spleen and kidneys revealed significant changes in sleeve gastrectomy and sham groups compared with controls (p = 0.004 and p = 0.018, respectively). Although sleeve gastrectomy does not lead to alteration in hematologic, biochemical, and immunologic laboratory parameters, it causes decreased food consumption, which results in toxicological histomorphological changes in rat liver as well as some changes in kidney and spleen samples.
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Aktekin A, Comunoglu N, Odabasi M, Muftuoglu T, Gurleyik G, Abanonu GB. Rate and Risk Factors of the Advanced Adenomas Among Diminutive Colorectal Polyps. Indian J Surg 2015; 77:805-810. [PMID: 27011461 PMCID: PMC4775552 DOI: 10.1007/s12262-013-1006-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Accepted: 10/28/2013] [Indexed: 10/26/2022] [Imported: 08/29/2023] Open
Abstract
Only 49 % of diminutive colorectal polyps are neoplastic, but a tiny percentage contains advanced histology. We aimed to determine the rate of advanced diminutive polyps and to evaluate the influence of age, gender, number, and localization. Patients undergoing a videocolonoscopy in October 2010 and April 2012 were collected prospectively. Subjects with polyps ≤5 mm in diameter were recruited into the study. The presence of a villous component of >25 % and a high degree of dysplasia were categorized as polyps with advanced histology. Two hundred eight diminutive polyps were identified in 102 patients. Twenty (9.6 %) diminutive polyps in 13 (12.74 %) patients showed advanced histology. The probability of having an advanced diminutive polyp was higher in patients who have more than one polyp or have polyps localized all along the colon or only to the distal part (p < 0.001 and p = 0.002). Having more than one polyp increases the likelihood of having advanced diminutive polyp according to a multivariate analysis (p = 0.003). Polyps accompanying any dysplastic diminutive polyp, being one of multiple polyps, and distributed all along the colon or localized to only the distal part have an increased probability of being an advanced diminutive polyp (p < 0.001, p = 0.047, p < 0.001, and p = 0.008). Multivariate logistic regression demonstrated that only any accompanying dysplastic diminutive polyp increases the probability of a polyp being advanced diminutive (p = 0.034). Diminutive polyps could have advanced histology. Multiple polyps located in the whole colorectum or to the distal part or accompanying any advanced polyps may harbor an advanced histology and should be removed.
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Aktekin A, Küçük M, Odabaşi M, Muftuoglu T, Gürleyik G, Özkara S, Aker F, Saglam A. The importance of invasion and resection of superior mesenteric and portal veins in adenocarcinoma of the pancreas. HEPATO-GASTROENTEROLOGY 2013; 60:1194-1198. [PMID: 23803382 DOI: 10.5754/hge121271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/20/2025] [Imported: 02/20/2025]
Abstract
BACKGROUND/AIMS To achieve a negative surgical margin, resection of superior mesenteric/portal vein is necessary in pancreatic cancer. This study is designed to demonstrate the demographic and clinical differences of the patients requiring major vein resection and the incidence of histopathological vein invasion. METHODOLOGY A retrospective analysis of patients that underwent pancreaticoduodenectomy for adenocarcinoma of the pancreas between January 2000 and September 2011 was performed. Macroscopic adhesion to vein was considered as an invasion and a resection was performed. RESULTS Twenty three of 100 patients that underwent pancreaticoduodenectomy for adenocarcinoma of the pancreas had vein resection. Although the operation time (p=0.001), blood loss (p<0.001) and perioperative blood transfusion (p<0.001) were higher in the vein resection group, there were no differences in perioperative and hospital mortality, complication rate and hospitalization time. The tumor was larger (p=0.001) and lymphovascular invasion (p=0.030), perineural invasion (p=0.011), median metastatic lymph nodes (p=0.007), rate of R1 resection (p=0.007) were higher in vein resection group. Only 9 patients out of 23 patients had histopathological vein wall invasion. Overall survival was also not significantly different (p=0.14). CONCLUSIONS Overall survival in vein resected group was also not significantly different than patients with standard pancreaticoduodenectomy and not all macroscopic vein adhesion means histopathological vein wall invasion.
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Gürleyik G, Zahidullahoğlu Cirpici O, Aktekin A, Sağlam A. [The value of Ranson and APACHE II scoring systems, and serum levels of interleukin-6 and C-reactive protein in the early diagnosis of the severity of acute pancreatitis]. ULUSAL TRAVMA VE ACIL CERRAHI DERGISI = TURKISH JOURNAL OF TRAUMA & EMERGENCY SURGERY : TJTES 2004; 10:83-88. [PMID: 15103565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/29/2023] [Imported: 02/20/2025]
Abstract
BACKGROUND We investigated the effectiveness of scoring systems, acute inflammation and acute phase responses in the early diagnosis of the severity of acute pancreatitis. METHODS In a prospective design, we determined Ranson and APACHE II scores, and serum interleukin-6 (IL-6) and C-reactive protein (CRP) levels in 30 patients (21 females, 9 males; mean age 56 years; range 28 to 82 years) with acute pancreatitis. The patients were divided into two groups as mild and severe pancreatitis according to the clinical, biochemical, and computed tomography findings. Ranson and APACHE II scores were determined after 48 hours, IL-6 levels within 24 hours, and CRP levels after 24, 48, and 72 hours of admission. Ranson scores of 4 or above, APACHE II scores of 8 or above, baseline serum IL-6 and CRP levels of 50 pg/ml and 150 mg/L, respectively, were regarded as strong predictors of acute pancreatitis. RESULTS Severe pancreatitis was diagnosed in six patients (20%), one of whom died due to multiple organ failure. Biliary symptoms were the most common presenting signs in both groups. The mean Ranson (p=0.004) and APACHE II (p=0.001) scores, serum IL-6 (p=0.001) and CRP levels at 24, 48, and 72 hours (p=0.02) were significantly high in patients with severe pancreatitis. The sensitivity was found as 66.6%, 83.3%, 100%, and 83.3%; the specificity as 87.5%, 91.7%, 87.5% and 71%; and the accuracy as 83.3%, 90%, 90%, and 73.3% for Ranson and APACHE II scores, IL-6 and CRP levels, respectively. CONCLUSION Ranson and APACHE II scores, CRP and, in particular, serum IL-6 levels are strong predictors of severe pancreatitis.
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ÖVEN BB, ÇELİK S, GÜRLEYİK G, AKER VARDAR F, YÜZÜGÜLLÜ ÇOBAN E, ŞEKER M, ÖKTEN İN, AKTEKIN A. Benefits of Neoadjuvant Chemotherapy for Luminal Breast Cancer with Respect to Tumor Response. JOURNAL OF ONCOLOGICAL SCIENCES 2021; 7:7-14. [DOI: 10.37047/jos.2020-75852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2025] [Imported: 02/20/2025] Open
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Aktekin A, Gürleyik G, Arman A, Pekcan H, Sağlam A. Intrathoracic splenosis secondary to previous penetrating thoracoabdominal trauma diagnosed during delayed diaphragmatic hernia repair. ULUS TRAVMA ACIL CER 2006; 12:68-70. [PMID: 16456753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023] [Imported: 02/20/2025]
Abstract
Although intraperitoneal splenosis is a very common disease, intrathoracic splenosis is very rare. It is generally an asymptomatic disease that occurs after thoracoabdominal trauma, and is diagnosed as an intrathoracic mass that leads to unnecessary investigations to be differentiated from other benign or malignant lesions of the chest. We present a patient with an intrathoracic mass which was preoperatively diagnosed as a diaphragmatic hernia on chest X-ray and magnetic resonance imaging. We have intraoperatively recognized that many pieces of splenic tissue have been herniated through a diaphragmatic defect, and formed intrathoracic splenosis. We repaired the diaphragmatic hernia defect after excision of fragments of the spleen.
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