Walid Elmoghazy
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Research Subjects
Research Interests
Walid Elmoghazy has a total of 70 co-authors. Here are the top co-authors by number of shared publications:
Shinji Uemoto
8 shared publications- Ahmed Elaffandi
Department of Surgery, Division of Organ Transplant, Hamad General Hospital, Doha, PO Box 3050, Qatar
5 shared publications - Hatem Khalaf
Department of Surgery, Division of Organ Transplant, Hamad General Hospital, Doha, PO Box 3050, Qatar
5 shared publications - Ahmed Mahfouz
Department of Radiology, Hamad General Hospital, Doha, PO Box 3050, Qatar
3 shared publications - Ibnouf Sulieman
Department of Surgery, Division of Organ Transplant, Hamad General Hospital, Doha, PO Box 3050, Qatar
3 shared publications Norman Kneteman
Department of Surgery Transplant Division University of Alberta AB Canada
3 shared publications
Latest Publications
- Open Access
- 1 October 2023
- Published by Egyptian Knowledge Bank in The Egyptian Journal of Hospital Medicine
- Vol. 93 (1) , 7419-7424
Predictive Value of Alpha-Fetoprotein Change Rates for Hepatocellular Carcinoma Recurrence After Liver Transplant
Background: Liver transplantation offers a conclusive solution for individuals diagnosed with Hepatocellular carcinoma (HCC). Alterations in alpha-fetoprotein (AFP) levels prior to transplantation could serve as an indicator for the potential recurrence of HCC. Objective: This study aimed to evaluate the capacity of variations in the pre-transplant AFP levels as a prognostic indicator for tumor recurrence after transplant. Patients and methods: 144 HCC patients had liver transplant over a 20-year period at our institute. Their mean age at time of transplant was 54.8 years, and 124 patients were males. 71 patients (49.3%) received interventions for HCC (group 1), while 73 patients (50.7%) had no HCC treatment (group 2). Results: The recurrence-free survival rate was 86.8%. HCC recurrence was reported in 19 patients (13.2%), including 17 males and 2 females. Among these 19 patients, 11 were in group 1 (15.5%), and 8 were in group 2 (11%). The predictors of recurrence were a tumor volume greater than 115 cc (P = 0.010), and AFP > 400 ng/ml (P = 0.009). While AFP gradient (AFP-G) did not exhibit a significant correlation with tumor recurrence in the entire cohort, it demonstrated a notable correlation with recurrence in untreated patients. A specific AFP-G threshold of 60 ng/ml/month was chosen. An AFP-G of 60 ng/ml/month displayed a sensitivity of 83.3% and a specificity of 94.7% for predicting HCC recurrence. Conclusion: It was noted that using an AFP-G exceeding 60 ng/ml/month should be regarded as a prognostic tool rather than a strict selection criterion for transplant candidates.
- 1 October 2023
- Published by Egyptian Knowledge Bank in The Egyptian Journal of Hospital Medicine
- Vol. 93 (1) , 7419-7424
Open AccessPredictive Value of Alpha-Fetoprotein Change Rates for Hepatocellular Carcinoma Recurrence After Liver Transplant
Background: Liver transplantation offers a conclusive solution for individuals diagnosed with Hepatocellular carcinoma (HCC). Alterations in alpha-fetoprotein (AFP) levels prior to transplantation could serve as an indicator for the potential recurrence of HCC. Objective: This study aimed to evaluate the capacity of variations in the pre-transplant AFP levels as a prognostic indicator for tumor recurrence after transplant. Patients and methods: 144 HCC patients had liver transplant over a 20-year period at our institute. Their mean age at time of transplant was 54.8 years, and 124 patients were males. 71 patients (49.3%) received interventions for HCC (group 1), while 73 patients (50.7%) had no HCC treatment (group 2). Results: The recurrence-free survival rate was 86.8%. HCC recurrence was reported in 19 patients (13.2%), including 17 males and 2 females. Among these 19 patients, 11 were in group 1 (15.5%), and 8 were in group 2 (11%). The predictors of recurrence were a tumor volume greater than 115 cc (P = 0.010), and AFP > 400 ng/ml (P = 0.009). While AFP gradient (AFP-G) did not exhibit a significant correlation with tumor recurrence in the entire cohort, it demonstrated a notable correlation with recurrence in untreated patients. A specific AFP-G threshold of 60 ng/ml/month was chosen. An AFP-G of 60 ng/ml/month displayed a sensitivity of 83.3% and a specificity of 94.7% for predicting HCC recurrence. Conclusion: It was noted that using an AFP-G exceeding 60 ng/ml/month should be regarded as a prognostic tool rather than a strict selection criterion for transplant candidates.
- Open Access
- 18 August 2023
- Published by Springer Nature in Langenbeck's Archives of Surgery
- Vol. 408 (1) , 1-8
Comparative analysis of surgical management approaches for hydatid liver cysts: conventional vs. minimally invasive techniques
Introduction: Hydatid liver disease is a prevalent condition in endemic areas, particularly in the Middle East and North Africa. The use of laparoscopy as a treatment option has gained popularity. However, there is still ongoing debate regarding the optimal approach for surgical management. In this study, we present our experience with the surgical treatment of hydatid liver disease comparing conventional and minimally invasive approaches, including laparoscopic and robotic options. Methods: We conducted a retrospective review of patients who underwent surgery for hydatid liver disease at our institution. Data was collected on the patients’ clinical presentations, cyst characteristics, surgical procedures performed, intraoperative findings, and postoperative complications. Results: A total of 98 hydatid liver cysts were surgically managed in 57 patients. The mean age of the patients was 37.2 ± 10.2 years, with 38 (66.7%) being male. Among the patients, 14 (24.6%) underwent conventional surgery (6 partial pericystectomy, 4 total pericystectomy, and 4 liver resection), 37 (64.9%) underwent laparoscopic surgery (31 partial pericystectomy, 4 total pericystectomy, and 2 liver resection), and 6 (10.5%) underwent robotic surgery (6 partial pericystectomy). There were no significant differences between the conventional surgery and minimally invasive groups in terms of patient age, gender, cyst size, or number. However, laparotomy was associated with a higher number of total pericystectomy and liver resection procedures compared to the minimally invasive approach (P = 0.010). Nonetheless, the operation time and blood loss were comparable between both groups. Perioperative complications occurred in 19 (33.3%) patients, with 16 (84%) experiencing minor issues. Bile leak occurred in 8 (14%) patients, resolving spontaneously in 5 patients. There was no significant difference (P = 0.314) in the incidence of complications between the two groups. Conventional surgery, however, was associated with a significantly longer hospital stay (P = 0.034). During follow-up, there were no cases of mortality or cyst recurrence in our cohort. Conclusion: Minimally invasive approaches for hydatid liver cysts offer advantages such as shorter hospitalization and potentially quicker recovery, making them valuable treatment options when accompanied by careful patient selection and adherence to proper surgical techniques.
- 18 August 2023
- Published by Springer Nature in Langenbeck's Archives of Surgery
- Vol. 408 (1) , 1-8
Open AccessComparative analysis of surgical management approaches for hydatid liver cysts: conventional vs. minimally invasive techniques
Introduction: Hydatid liver disease is a prevalent condition in endemic areas, particularly in the Middle East and North Africa. The use of laparoscopy as a treatment option has gained popularity. However, there is still ongoing debate regarding the optimal approach for surgical management. In this study, we present our experience with the surgical treatment of hydatid liver disease comparing conventional and minimally invasive approaches, including laparoscopic and robotic options. Methods: We conducted a retrospective review of patients who underwent surgery for hydatid liver disease at our institution. Data was collected on the patients’ clinical presentations, cyst characteristics, surgical procedures performed, intraoperative findings, and postoperative complications. Results: A total of 98 hydatid liver cysts were surgically managed in 57 patients. The mean age of the patients was 37.2 ± 10.2 years, with 38 (66.7%) being male. Among the patients, 14 (24.6%) underwent conventional surgery (6 partial pericystectomy, 4 total pericystectomy, and 4 liver resection), 37 (64.9%) underwent laparoscopic surgery (31 partial pericystectomy, 4 total pericystectomy, and 2 liver resection), and 6 (10.5%) underwent robotic surgery (6 partial pericystectomy). There were no significant differences between the conventional surgery and minimally invasive groups in terms of patient age, gender, cyst size, or number. However, laparotomy was associated with a higher number of total pericystectomy and liver resection procedures compared to the minimally invasive approach (P = 0.010). Nonetheless, the operation time and blood loss were comparable between both groups. Perioperative complications occurred in 19 (33.3%) patients, with 16 (84%) experiencing minor issues. Bile leak occurred in 8 (14%) patients, resolving spontaneously in 5 patients. There was no significant difference (P = 0.314) in the incidence of complications between the two groups. Conventional surgery, however, was associated with a significantly longer hospital stay (P = 0.034). During follow-up, there were no cases of mortality or cyst recurrence in our cohort. Conclusion: Minimally invasive approaches for hydatid liver cysts offer advantages such as shorter hospitalization and potentially quicker recovery, making them valuable treatment options when accompanied by careful patient selection and adherence to proper surgical techniques.
- Open Access
- 12 July 2021
- Published by Wiley in Case Reports in Surgery
- Vol. 2021, 1-7
First Schistosomal Cholecystitis Complicated by Cholangitis and Liver Abscess: Case Report and Review of Literature
Schistosomiasis is one of the most prevalent parasitic infections in the developing world. When it affects the gastrointestinal system specifically the liver, it causes periportal fibrosis followed by cirrhosis. Cholecystitis however is a rare presentation, and associated liver abscess has certainly never been reported to date. We report a case of acute cholecystitis complicated by cholangitis and liver abscess in a 46-year-old man. After complex course of treatment, he had laparoscopic cholecystectomy, and the histology report confirmed schistosomiasis. Gallbladder schistosomiasis is an uncommon disease that is associated with dense fibrotic changes that strongly mimics xanthogranulomatous cholecystitis. Liver abscess may occur during the disease evolution especially in patient originating from endemic backgrounds. We present the case and a comprehensive literature review.
- 12 July 2021
- Published by Wiley in Case Reports in Surgery
- Vol. 2021, 1-7
Open AccessFirst Schistosomal Cholecystitis Complicated by Cholangitis and Liver Abscess: Case Report and Review of Literature
Schistosomiasis is one of the most prevalent parasitic infections in the developing world. When it affects the gastrointestinal system specifically the liver, it causes periportal fibrosis followed by cirrhosis. Cholecystitis however is a rare presentation, and associated liver abscess has certainly never been reported to date. We report a case of acute cholecystitis complicated by cholangitis and liver abscess in a 46-year-old man. After complex course of treatment, he had laparoscopic cholecystectomy, and the histology report confirmed schistosomiasis. Gallbladder schistosomiasis is an uncommon disease that is associated with dense fibrotic changes that strongly mimics xanthogranulomatous cholecystitis. Liver abscess may occur during the disease evolution especially in patient originating from endemic backgrounds. We present the case and a comprehensive literature review.
- Open Access
- 8 June 2019
- Published by Wolters Kluwer Health in Annals of Medicine & Surgery
- Vol. 44, 33-38
Gallbladder cancer: 7-Year experience from Qatar
Background: Gallbladder cancer (GC) is a relatively rare disease. To date, there are no studies describing the epidemiology of this disease in Qatar. Objective: To study the epidemiology of Gallbladder Cancer in Qatar. Methods: A retrospective analysis of the cases of GC in Hamad General Hospital in Qatar from 2009 to 2016. Results: Thirty-five patients presented with GC during the study period, 10 females (28.6%) and 25 males (71.4%). Fourteen patients (40%) were diagnosed incidentally after laparoscopic cholecystectomy, 16 (48.6%) were diagnosed pathologically, and 4 (11.4%) were diagnosed radiologically. The median age at diagnosis was 54 years (31–78). 74.3% of the disease occurred in patients less than 60 years old. Metastatic disease was discovered in 25 patients (71.4%) versus no metastasis in 10 patients (28.6%). The most common sites for metastasis were the liver (42.9%), peritoneum (25.7%), and lymph nodes (25.7%). Curative central hepatic resection was done in 8 patients (22.9%). Pathology showed adenocarcinoma in 27 patients (77.1%), neuroendocrine tumor in 3 patients (8.6%) and high-grade dysplasia in 1 patient (2.9%). No histopathology was available for 4 patients (11.4%). Twenty-eight patients (80.0%) had regular follow up, with 22 (62.9%) still alive. Six patients (17.1%) died during follow up with survival after diagnosis ranging from 42 days to 6.8 years. Conclusions: In Qatar, due to the unique demographics, GC is more common in males and younger age groups. Most of the patients present late with metastasis, but curative resection is associated with long-term survival.
- 8 June 2019
- Published by Wolters Kluwer Health in Annals of Medicine & Surgery
- Vol. 44, 33-38
Open AccessGallbladder cancer: 7-Year experience from Qatar
Background: Gallbladder cancer (GC) is a relatively rare disease. To date, there are no studies describing the epidemiology of this disease in Qatar. Objective: To study the epidemiology of Gallbladder Cancer in Qatar. Methods: A retrospective analysis of the cases of GC in Hamad General Hospital in Qatar from 2009 to 2016. Results: Thirty-five patients presented with GC during the study period, 10 females (28.6%) and 25 males (71.4%). Fourteen patients (40%) were diagnosed incidentally after laparoscopic cholecystectomy, 16 (48.6%) were diagnosed pathologically, and 4 (11.4%) were diagnosed radiologically. The median age at diagnosis was 54 years (31–78). 74.3% of the disease occurred in patients less than 60 years old. Metastatic disease was discovered in 25 patients (71.4%) versus no metastasis in 10 patients (28.6%). The most common sites for metastasis were the liver (42.9%), peritoneum (25.7%), and lymph nodes (25.7%). Curative central hepatic resection was done in 8 patients (22.9%). Pathology showed adenocarcinoma in 27 patients (77.1%), neuroendocrine tumor in 3 patients (8.6%) and high-grade dysplasia in 1 patient (2.9%). No histopathology was available for 4 patients (11.4%). Twenty-eight patients (80.0%) had regular follow up, with 22 (62.9%) still alive. Six patients (17.1%) died during follow up with survival after diagnosis ranging from 42 days to 6.8 years. Conclusions: In Qatar, due to the unique demographics, GC is more common in males and younger age groups. Most of the patients present late with metastasis, but curative resection is associated with long-term survival.
- 8 March 2019
- Published by Elsevier in Arab Journal of Gastroenterology
- Vol. 20 (1) , 38-43
Hepatocellular carcinoma in a rapidly growing community: Epidemiology, clinico-pathology and predictors of extrahepatic metastasis
- 8 March 2019
- Published by Elsevier in Arab Journal of Gastroenterology
- Vol. 20 (1) , 38-43
Hepatocellular carcinoma in a rapidly growing community: Epidemiology, clinico-pathology and predictors of extrahepatic metastasis
- 28 January 2019
- Published by Springer Nature in Surgical Endoscopy
- Vol. 33 (11) , 3711-3717
Liver resection for extra-pancreatic biliary cancer: what is the role of laparoscopic approach?
Laparoscopic liver resection (LLR) has evolved over time, yet its role in extra-pancreatic biliary cancer has been limited due to several factors. We aimed to evaluate the short-term outcome of LLR in extra-pancreatic biliary tract cancer.
- 28 January 2019
- Published by Springer Nature in Surgical Endoscopy
- Vol. 33 (11) , 3711-3717
Liver resection for extra-pancreatic biliary cancer: what is the role of laparoscopic approach?
Laparoscopic liver resection (LLR) has evolved over time, yet its role in extra-pancreatic biliary cancer has been limited due to several factors. We aimed to evaluate the short-term outcome of LLR in extra-pancreatic biliary tract cancer.
- Open Access
- 1 January 2019
- Published by Wolters Kluwer Health in International Journal of Surgery Case Reports
- Vol. 58 (C) , 108-116
Associating liver partition and portal vein ligation for staged hepatectomy in Qatar
Introduction: Associating Liver Partition and Portal Vein Ligation for Staged -hepatectomy (ALPPS) is an evolving procedure that allows rapid hypertrophy of the future liver remnant (FLR). We describe the first two cases performed in Qatar. Case presentations: Case 1: A 53 -year old male with sarcoma metastases to the liver 8 years after resection of an abdominal wall tumor, requiring an extended right hepatectomy but with in an inadequate FLR. ALPPS was done and he achieved 147% increase in the volume of the FLR within 6 days (from 15.9%-34.2%). The second stage was completed successfully on day 7. Case 2: A 59-year old male patient had colorectal liver metastases that required an extended right liver resection and had inadequate FLR of 19.8%. Seven days after the first stage, the FLR hypertrophied to 37.7% (90.2% increase in volume) and the second stage was completed successfully on day 8. Both patients had uneventful recovery and no recurrence or complications on follow up. Discussion: ALPPS allows large liver resections while circumventing the long delay in the conventional two staged hepatectomy and portal vein ligation/embolization. The reported morbidity and mortality in earlier series was high, but recent selection criteria and technique refinements reduce this morbidity. Many variations are still being reported. Conclusion: ALPPS is an evolving technique that adds to the armamentarium of the liver surgeon to allow larger liver resections in a timely manner. It is feasible and safe to be performed with careful selection. Highlights:
- 1 January 2019
- Published by Wolters Kluwer Health in International Journal of Surgery Case Reports
- Vol. 58 (C) , 108-116
Open AccessAssociating liver partition and portal vein ligation for staged hepatectomy in Qatar
Introduction: Associating Liver Partition and Portal Vein Ligation for Staged -hepatectomy (ALPPS) is an evolving procedure that allows rapid hypertrophy of the future liver remnant (FLR). We describe the first two cases performed in Qatar. Case presentations: Case 1: A 53 -year old male with sarcoma metastases to the liver 8 years after resection of an abdominal wall tumor, requiring an extended right hepatectomy but with in an inadequate FLR. ALPPS was done and he achieved 147% increase in the volume of the FLR within 6 days (from 15.9%-34.2%). The second stage was completed successfully on day 7. Case 2: A 59-year old male patient had colorectal liver metastases that required an extended right liver resection and had inadequate FLR of 19.8%. Seven days after the first stage, the FLR hypertrophied to 37.7% (90.2% increase in volume) and the second stage was completed successfully on day 8. Both patients had uneventful recovery and no recurrence or complications on follow up. Discussion: ALPPS allows large liver resections while circumventing the long delay in the conventional two staged hepatectomy and portal vein ligation/embolization. The reported morbidity and mortality in earlier series was high, but recent selection criteria and technique refinements reduce this morbidity. Many variations are still being reported. Conclusion: ALPPS is an evolving technique that adds to the armamentarium of the liver surgeon to allow larger liver resections in a timely manner. It is feasible and safe to be performed with careful selection. Highlights:
- Open Access
- 1 January 2018
- Published by Wolters Kluwer Health in International Journal of Surgery Case Reports
- Vol. 50, 100-105
IgG4-related disease mimicking pancreatic cancer: Case report and review of the literature
Most patients with pancreatic masses pose a diagnostic challenge when a benign lesion is suspected, and often, resection is needed before a benign diagnosis is confirmed. A 57 years old male patient presented with a pancreatic head mass, obstructive jaundice and submandibular lymph node enlargement. He also had a history of recurrent eye pain and redness, skin lesions, and benign prostatic hypertrophy. MRI showed a pancreatic head mass with double duct sign, aortic thickening, bilateral renal lesions, diffuse lymph node enlargement, and prostatic enlargement. FDG-PET/CT demonstrated abnormal uptake corresponding to the MRI lesions, and there were elevated IgG4 levels on blood investigations. Biopsy of an inguinal lymph node revealed infiltrates with IgG4 plasma cells, consistent with the diagnosis of IgG4 disease. The patient was treated with IV steroids and showed significant improvement. IgG4 related disease is a rare entity that is characterized by lesions that show heavy infiltration with IgG4 positive plasma cells, storiform fibrosis, and obliterative phlebitis. The pancreas is the most commonly involved organ, but several other organ systems are involved, and this helps in clinical suspicion of the diagnosis. A biopsy from any easily accessible site that shows the characteristic histological features is sufficient for diagnosis. Patients respond quickly to steroids, but recurrence is frequent. IgG4 related disease is a rare cause of pancreatic tumorous lesions that need a high index of suspicion for diagnosis and should be differentiated from pancreatic neoplastic lesions.
- 1 January 2018
- Published by Wolters Kluwer Health in International Journal of Surgery Case Reports
- Vol. 50, 100-105
Open AccessIgG4-related disease mimicking pancreatic cancer: Case report and review of the literature
Most patients with pancreatic masses pose a diagnostic challenge when a benign lesion is suspected, and often, resection is needed before a benign diagnosis is confirmed. A 57 years old male patient presented with a pancreatic head mass, obstructive jaundice and submandibular lymph node enlargement. He also had a history of recurrent eye pain and redness, skin lesions, and benign prostatic hypertrophy. MRI showed a pancreatic head mass with double duct sign, aortic thickening, bilateral renal lesions, diffuse lymph node enlargement, and prostatic enlargement. FDG-PET/CT demonstrated abnormal uptake corresponding to the MRI lesions, and there were elevated IgG4 levels on blood investigations. Biopsy of an inguinal lymph node revealed infiltrates with IgG4 plasma cells, consistent with the diagnosis of IgG4 disease. The patient was treated with IV steroids and showed significant improvement. IgG4 related disease is a rare entity that is characterized by lesions that show heavy infiltration with IgG4 positive plasma cells, storiform fibrosis, and obliterative phlebitis. The pancreas is the most commonly involved organ, but several other organ systems are involved, and this helps in clinical suspicion of the diagnosis. A biopsy from any easily accessible site that shows the characteristic histological features is sufficient for diagnosis. Patients respond quickly to steroids, but recurrence is frequent. IgG4 related disease is a rare cause of pancreatic tumorous lesions that need a high index of suspicion for diagnosis and should be differentiated from pancreatic neoplastic lesions.
- 1 June 2017
- Published by Springer Nature
- p. 837-870
Serum Alpha-Fetoprotein as a Biomarker in Liver Transplantation
- 1 June 2017
- Published by Springer Nature
- p. 837-870
Serum Alpha-Fetoprotein as a Biomarker in Liver Transplantation
- 11 August 2016
- Published by Springer Nature
- p. 1-34
Serum Alpha-Fetoprotein as a Biomarker in Liver Transplantation
- 11 August 2016
- Published by Springer Nature
- p. 1-34
Serum Alpha-Fetoprotein as a Biomarker in Liver Transplantation