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Featured researches published by Nikolaos Pararas.


Journal of Medical Case Reports | 2009

Management of major bile duct injury after laparoscopic cholecystectomy: a case report

Andreas Manouras; Nikolaos Pararas; Pantelis Antonakis; Emannuel E Lagoudiannakis; George Papageorgiou; Ioannis G Dalianoudis; Manoussos M. Konstadoulakis

IntroductionBile duct injury is a severe and potentially life-threatening complication of laparoscopic cholecystectomy. Several series have described a 0.5% to 0.6% incidence of bile duct injury during laparoscopic cholecystectomy. The aim of this study was to analyze the presentation, characteristics, related investigation, and treatment results of major bile duct injuries after laparoscopic cholecystectomy.Case presentationA rare case of a 48-year-old Greek woman with a triple bile duct injury (right and left hepatic duct ligation and common bile duct cross-section) is presented. A Roux en Y hepaticojejunostomy was performed after repeated endoscopic retrograde cholangiopancreatographies, percutaneous transhepatic catheterization of the ducts and magnetic resonance cholangiographies to delineate the biliary anatomy and assess the level of injury.ConclusionEarly recognition and an adequate multidisciplinary approach are the cornerstones for the optimal final outcome. Suboptimal management of injuries often leads to more extensive damage to the biliary tree and its vasculature. Early referral to a tertiary care center with experienced hepatobiliary surgeons and skilled interventional radiologists would appear to be necessary to assure optimal results.


Surgery Today | 2008

Evaluation of pain experienced during breast ductal endoscopy

George C. Zografos; Flora Zagouri; Theodoros N. Sergentanis; Antonia Gounaris; Nikolaos Pararas; Vassiliki Oikonomou M.D.; Effrosyni Panopoulou; Constantine I Fotiadis; John Bramis

PurposeDuctal endoscopy is valuable for the differential diagnosis of bloody nipple discharge; however, the pain associated with this procedure has not been evaluated. This study aims to assess the pain experienced by patients during ductal endoscopy.MethodsWe studied a consecutive series of women who underwent ductal endoscopy, to investigate the cause of bloody nipple discharge. The procedure was performed using standard local anesthesia (lidocaine 1% 10 ml without epinephrine, involving nipple block and periaureolar administration). Patients were asked to score the level of pain with a visual analog scale, 1, 4, 7, 12, 17, 22, 27, and 32 min after the procedure, and describe their overall and maximum pain.ResultsThis series comprised 20 women aged from 27 to 68 years old. The overall pain (mean ± SE) score was equal to 5.8 ±0.3, and the maximum pain score was 8.3 ± 0.2. The peak of pain corresponded with when the dilator was inserted through the sphincter. The group in which the dilator was inserted after 4 min experienced more intense maximum and overall pain after 7, 12, 17 and 22 min.ConclusionsPain is an important factor in ductal endoscopy, and peaks relatively early. A standard, baseline local lidocaine dose of greater than 10 ml may be necessary at the beginning of the procedure. Late insertion of the dilator seems to be an indicator of the force of the procedure.


Journal of Medical Case Reports | 2007

Secondary breast lymphoma diagnosed by vacuum-assisted breast biopsy: a case report

Flora Zagouri; Theodoros N. Sergentanis; Afroditi Nonni; Dimitra Koulocheri; Philip Domeyer; Dimitrios Dardamanis; Nikolaos V. Michalopoulos; Nikolaos Pararas; Antonia Gounaris; George C. Zografos

IntroductionBreast lymphoma, either as a manifestation of primary extranodal disease or as secondary involvement, is a rare malignancy, and its diagnosis, prognosis, and treatment have not been clearly defined. On the other hand, Vacuum-assisted breast biopsy (VABB) is a minimally invasive technique with ever-growing use for the diagnosis of mammographically detected, non-palpable breast lesions.Case presentationA symptom-free, 56-year-old woman presented with a non-palpable BI-RADS 4B lesion without microcalcifications. She had a positive family history for breast cancer and a history of atypical ductal hyperplasia in the ipsilateral breast four years ago. She reported having been treated for non-Hodgkin lymphoma 12 years ago. With the suspicion of breast cancer, mammographically guided VABB with 11-gauge probe (on the stereotactic Fishers table) was performed. VABB made the diagnosis of a non-Hodgkin, grade II, B-cell germinal-center lymphoma. VABB yielded enough tissue for immunohistochemistry/WHO classification.ConclusionThis is the first case in the literature demonstrating the successful diagnosis of breast lymphoma by VABB, irrespectively of the level of clinical suspicion. It should be stressed that VABB was able to yield enough tissue for WHO classification. In general, lymphoma should never be omitted in the differential diagnosis, since no pathognomonic radiologic findings exist for its diagnosis.


Annals of Vascular Surgery | 2008

Schwannoma of Thigh Mimicking Pseudoaneurysm of the Profunda femoral artery

Konstantinos Filis; Konstantinos Toutouzas; Emmanuel Lagoudianakis; Michael Genetzakis; Nikolaos Pararas; Haridimos Markogiannakis; Evangelos Menenakos; Andreas Manouras

Femoral and popliteal artery aneurysms constitute the majority of peripheral arterial aneurysms. However, aneurysm of the profunda femoral artery is highly uncommon, being mainly of traumatic and mycotic origin. Diagnosis is usually straightforward with clinical and radiological examination, and such aneurysms are only rarely misdiagnosed as tumors. We herein report a case of preoperatively diagnosed pseudoaneurysm of the profunda femoral artery that was intraoperatively found to be a soft tissue tumor and finally revealed to be a schwannoma, by pathology. Our cases unusual presentation considerably confounded both diagnosis and management, thus providing a salutary clinical lesson.


World Journal of Gastroenterology | 2007

Acute mechanical bowel obstruction: clinical presentation, etiology, management and outcome.

Haridimos Markogiannakis; Evangelos Messaris; Dimitrios Dardamanis; Nikolaos Pararas; Dimitrios Tzertzemelis; Panagiotis Giannopoulos; Andreas Larentzakis; Emmanuel Lagoudianakis; Andreas Manouras; Ioannis Bramis


Breast Cancer Research and Treatment | 2008

Minimizing underestimation rate of microcalcifications excised via vacuum-assisted breast biopsy: a blind study

George C. Zografos; Flora Zagouri; Theodoros N. Sergentanis; Afroditi Nonni; Dimitra Koulocheri; Maria Fotou M.D.; Effrosyni Panopoulou; Nikolaos Pararas; Constantine Fotiadis; John Bramis


World Journal of Gastroenterology | 2007

Lipoma induced jejunojejunal intussusception

Andreas Manouras; Emmanuel Lagoudianakis; Dimitrios Dardamanis; Dimitrios Tsekouras; Haridimos Markogiannakis; Michael Genetzakis; Nikolaos Pararas; Artemisia Papadima; Christos Triantafillou; Vagelogiannis Katergiannakis


Medical Science Monitor | 2007

Sutureless open low anterior resection with total mesorectal excision for rectal cancer with the use of the electrothermal bipolar vessel sealing system

Andreas Manouras; George M. Filippakis; Dimitrios Tsekouras; Emmanuel Lagoudianakis; Michael Genetzakis; Haridimos Markogiannakis; Georgia Kafiri; Nikolaos Pararas; Dimitrios Papanikolaou; Konstantinos Toutouzas; Stilianos Katsaragakis


Surgical Laparoscopy Endoscopy & Percutaneous Techniques | 2007

Vertical rotation and impaction to the choledochal duct of a migrated biliary self-expanding metal stent.

Andreas Manouras; Fotios Archodovassilis; Emmanuel Lagoudianakis; Dimitrios Tsekouras; Michael Genetzakis; Nikolaos Pararas; Andreas Romanos; Vaggelogiannis Katergiannakis


Annales De Chirurgie Vasculaire | 2008

Schwannome de la cuisse imitant un faux anévrisme de l'artère fémorale profonde

Konstantinos Filis; Konstantinos Toutouzas; Emmanuel Lagoudianakis; Michael Genetzakis; Nikolaos Pararas; Haridimos Markogiannakis; Evangelos Menenakos; Andreas Manouras

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Andreas Manouras

National and Kapodistrian University of Athens

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Emmanuel Lagoudianakis

National and Kapodistrian University of Athens

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Haridimos Markogiannakis

National and Kapodistrian University of Athens

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Michael Genetzakis

National and Kapodistrian University of Athens

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Evangelos Menenakos

National and Kapodistrian University of Athens

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Dimitrios Dardamanis

National and Kapodistrian University of Athens

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Dimitrios Tsekouras

National and Kapodistrian University of Athens

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Flora Zagouri

National and Kapodistrian University of Athens

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