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Dive into the research topics where Nikolaos Panagiotopoulos is active.

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Featured researches published by Nikolaos Panagiotopoulos.


Journal of Emergency Medicine | 2013

Acute Surgical Abdomen Due to Phytobezoar-induced Ileal Obstruction

Nikolaos S. Salemis; Nikolaos Panagiotopoulos; Nikolaos Sdoukos; Evangelos Niakas

BACKGROUND Phytobezoar-induced small bowel obstruction is an uncommon clinical entity accounting for 2-4.8% of all mechanical intestinal obstructions. In addition, presentation with features of acute surgical abdomen is extremely rare, accounting for only 1% of the patients. OBJECTIVES The aim of this report is to present a very rare case of a phytobezoar-induced small bowel obstruction in a male patient who presented with acute surgical abdomen. A correct preoperative diagnosis was made based on the patients history and characteristic imaging features on the emergency computed tomography (CT) scan. CASE REPORT A 55-year-old man with previous gastrectomy presented with typical manifestations of acute abdomen. CT scan demonstrated dilatated small bowel loops and an intraluminal ileal mass with a mottled appearance. At exploratory laparotomy, a phytobezoar was found impacted in the terminal ileum and was removed through an enterotomy. CONCLUSIONS Phytobezoar should be considered in patients with previous gastric outlet surgery who present with bowel obstruction and features of acute surgical abdomen. The presence of a well-defined intraluminal mass with a mottled gas pattern on emergency CT scan is suggestive of an intestinal phytobezoar.


Journal of Thoracic Disease | 2015

Inflammatory myofibroblastic tumour of the lung: a reactive lesion or a true neoplasm?

Nikolaos Panagiotopoulos; Davide Patrini; Lasha Gvinianidze; Wen Ling Woo; Elaine Borg; David S. Lawrence

Inflammatory myofibroblastic tumour (IMT) of the lung represents an extremely rare type of inflammatory pseudo tumor that appears most commonly in children and young individuals. There has been an ongoing controversy whether an IMT is a reactive lesion or a true neoplasm making the further management extremely challenging. Purpose of the paper is through a literature review to highlight the existence of this rare tumour along with its key features and the management options available.


Surgical Laparoscopy Endoscopy & Percutaneous Techniques | 2012

Isolated laparoscopic caudate lobe resection.

Charis Kyriakides; Nikolaos Panagiotopoulos; Long R. Jiao

The local anatomy of the caudate lobe of the liver, between the hepatic hilum and the inferior vena cava, presents a surgical challenge when an isolated resection is attempted. The video of the laparoscopic technique is presented in a 20-year-old woman with a 60×40 mm lesion.


International Journal of Surgery Case Reports | 2011

Bilateral ovarian fibrothecoma. An uncommon cause of a large pelvic mass

Nikolaos S. Salemis; Nikolaos Panagiotopoulos; Vera Papamichail; Konstantinos Kiriakopoulos; Evangelos Niakas

Ovarian fibrothecomas are uncommon tumors of gonadal stromal cell origin. They account for 3-4% of all ovarian tumors and in 90% of the cases are unilateral. Here, we describe a rare case of a bilateral ovarian fibrothecoma in a postmenopausal woman who presented with a large pelvic mass and metrorrhagia. Diagnostic evaluation and surgical management are discussed along with a brief review of the literature. Although rare, ovarian fibrothecoma should be considered in patients presenting with a large pelvic mass and postmenopausal bleeding. Radical surgery is the preferred management strategy for postmenopausal women with bilateral ovarian fibrothecomas and is associated with a good prognosis.


Case Reports in Medicine | 2010

Cavernous Hemangioma of the Rib: A Rare Diagnosis

Stavros Gourgiotis; Anastasios Piyis; Nikolaos Panagiotopoulos; Panayotis Panayotopoulos; Nikolaos S. Salemis

Hemangioma of the rib is an uncommon benign vascular tumour. A case of rib hemangioma in a 29-year-old woman is presented. Chest roentgenogram and computed tomography revealed a mass along the inner surface of the 7th left rib with bone destruction. She underwent resection of the 7th rib. The pathologic diagnosis was cavernous hemangioma. Hemangiomas of the rib are rare tumours but should be kept in mind in the differential diagnosis of rib tumours.


Journal of Thoracic Disease | 2015

Etiology and management of spontaneous haemothorax

Davide Patrini; Nikolaos Panagiotopoulos; Jonathan Pararajasingham; Lasha Gvinianidze; Yassir Iqbal; David Lawrence

Spontaneous haemothorax (SH) is a subcategory of haemothorax that involves the accumulation of blood within the pleural space in the abscence of trauma or other causes. The clinical presentation is variable and includes a rapid progression of symptoms of chest pain and dyspnea that can be life threatening when hemodynamic instability and hypovolemic shock occurs. Despite haemothorax, SH is much less common with data limited to case reports and case series. A literature review has been performed to identify and summarise all potentials causes leading to this clinical entity.


Journal of Cardiothoracic Surgery | 2015

Hepatopulmonary Fistula: a life threatening complication of hydatid disease

Mohamed A Gulamhussein; Davide Patrini; Jonathan Pararajasingham; Benjamin Adams; Rajeev Shukla; Dimitrios Velissaris; David Lawrence; Nikolaos Panagiotopoulos

Despite extensive infection control measures against parasitic diseases, hydatid disease, caused by Echinococcus granulosus, still occurs in a minor group of our population. If the infection is not treated adequately, it goes on to developing life-threatening complications, one of which is hepatopulmonary fistula. These complications usually warrant early surgical intervention, or else may lead to extensive sepsis and ultimately death. We discuss the case of an elderly female suffering from pulmonary hydatid disease, further complicated by a hepatopulmonary fistula and underwent surgical treatment. This case emphasises the importance of early recognition of pulmonary hydatid disease given its atypical nature of presentation before the disease is further exacerbated by this aggressive complication. Furthermore, it is imperative to incorporate radical surgery as the first-line treatment in established hepatopulmonary fistula, in order to prevent further clinical deterioration and curative outcome.


World Journal of Gastrointestinal Surgery | 2012

Laparoscopic resection of a giant exophytic liver haemangioma with the laparoscopic Habib 4× radiofrequency device

Metesh Acharya; Nikolaos Panagiotopoulos; Premjithlal Bhaskaran; Charis Kyriakides; Madhava Pai; Nagy Habib

Haemangiomas are the most common solitary benign neoplasm of the liver with an incidence ranging from 5% to 20%. Although usually small and asymptomatic, they may reach considerable proportions and rarely give rise to life-threatening complications. Surgical intervention is required for incapacitating symptoms, established complications, and diagnostic uncertainty. The resection of haemangiomas demands meticulous surgical technique, owing to their high vascularity and the concomitant risk of intra-operative haemorrhage. Laparoscopic resection of giant haemangiomas is even more challenging, and has only been reported twice. We here report the case of a giant 10 cm liver haemangioma which was successfully resected laparoscopically using the laparoscopic HabibTM 4×, a bipolar radiofrequency device, without clamping major vessels and with minimal blood loss. Transfusion of blood or blood products was not required. The patient had an uneventful recovery and was asymptomatic at 7-mo follow-up.


International Journal of Surgery Case Reports | 2010

Colonic obstruction secondary to incarcerated Spigelian hernia in a severely obese patient

Nikolaos S. Salemis; Nikolaos Kontoravdis; Stavros Gourgiotis; Nikolaos Panagiotopoulos; Christos Gakis; Georgios Dimitrakopoulos

Spigelian hernia is a rare hernia of the ventral abdominal wall accounting for 1-2% of all hernias. Incarceration of a Spigelian hernia has been reported in 17-24% of the cases. We herein describe an extremely rare case of a colonic obstruction secondary to an incarcerated Spigelian hernia in a severely obese patient. Physical examination was inconclusive and diagnosis was established by computed tomography scans. The patient underwent an open intraperitoneal mesh repair. A high level of suspicion and awareness is required as clinical findings of a Spigelian hernia are often nonspecific especially in obese patients. Computed tomography scan provides detailed information for the surgical planning. Open mesh repair is safe in the emergent surgical intervention of a complicated Spigelian hernia in severely obese patients.


Respiratory medicine case reports | 2017

Endobronchial ultrasound convex probe for lymphoma, sarcoidosis, lung cancer and other thoracic entities. A case series

Paul Zarogoulidis; Haidong Huang; Chong Bai; Christoforos Kosmidis; Georgia Trakada; Lemonia Veletza; Theodora Tsiouda; Nikolaos Barbetakis; Dimitrios Paliouras; Evangelia Athanasiou; Dimitris Hatzibougias; Anastasios Kallianos; Nikolaos Panagiotopoulos; Liana Papaemmanouil; Wolfgang Hohenforst-Schmidt

Endobronchial ultrasound endoscopy is a state of the art diagnostic endoscopic procedure for the thorax. Firstly it was designed mainly for the staging of lung cancer and of course for the diagnosis of suspicious findings in large central airways. The main limitation of the equipment is the diameter of the instrument and therefore it can only be guided through large airways. However; the diameter of the working channel also provides a large tissue sample nowadays with the 19G biopsy needle. We will provide our experience with the 22G needle of the endobronchial convex-probe in several medical situations of the thorax.

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Davide Patrini

University College London

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David S. Lawrence

University of North Carolina at Chapel Hill

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David Lawrence

University College London

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Martin Hayward

University College London

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Elaine Borg

University College London

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Rajeev Shukla

University College London

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Benjamin Adams

University College London

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