Omar Hamdy

Dr. Omar Hamdy

orcid

Research Focus & Metrics

Academic Career Length

8Years (2019-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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24 May 2022 in The Lancet Global Health
Verified
Journal Article
Open access
CSCatherine A Shaw
Catherine A Shaw
RPRiinu Pius
Riinu Pius
TDThomas M Drake
Thomas M Drake
LNLisa Norman
Lisa Norman
AAAdesoji O Ademuyiwa
Adesoji O Ademuyiwa
JLJean Wilguens Lartigue
Jean Wilguens Lartigue
Early death after cancer surgery is higher in low-income and middle-income countries (LMICs) compared with in high-income countries, yet the impact of facility characteristics on early postoperative outcomes is unknown. The aim of this study was to examine the association between hospital infrastructure, resource availability, and processes on early outcomes after cancer surgery worldwide. A multimethods analysis was performed as part of the GlobalSurg 3 study—a multicentre, international, prospective cohort study of patients who had surgery for breast, colorectal, or gastric cancer. The primary outcomes were 30-day mortality and 30-day major complication rates. Potentially beneficial hospital facilities were identified by variable selection to select those associated with 30-day mortality. Adjusted outcomes were determined using generalised estimating equations to account for patient characteristics and country-income group, with population stratification by hospital. Between April 1, 2018, and April 23, 2019, facility-level data were collected for 9685 patients across 238 hospitals in 66 countries (91 hospitals in 20 high-income countries; 57 hospitals in 19 upper-middle-income countries; and 90 hospitals in 27 low-income to lower-middle-income countries). The availability of five hospital facilities was inversely associated with mortality: ultrasound, CT scanner, critical care unit, opioid analgesia, and oncologist. After adjustment for case-mix and country income group, hospitals with three or fewer of these facilities (62 hospitals, 1294 patients) had higher mortality compared with those with four or five (adjusted odds ratio [OR] 3·85 [95% CI 2·58–5·75]; p<0·0001), with excess mortality predominantly explained by a limited capacity to rescue following the development of major complications (63·0% vs 82·7%; OR 0·35 [0·23–0·53]; p<0·0001). Across LMICs, improvements in hospital facilities would prevent one to three deaths for every 100 patients undergoing surgery for cancer. Hospitals with higher levels of infrastructure and resources have better outcomes after cancer surgery, independent of country income. Without urgent strengthening of hospital infrastructure and resources, the reductions in cancer-associated mortality associated with improved access will not be realised. National Institute for Health and Care Research.

30 October 2023 in Cancers
Verified
Journal Article
Open access
PDF file
GSGehad Ahmad Saleh
Gehad Ahmad Saleh
NBNihal M Batouty
Nihal M Batouty
AGAbdelrahman Gamal
Abdelrahman Gamal
Ahmed ElnakibAhmed Elnakib
Ahmed Elnakib
OHOmar Hamdy
Omar Hamdy
Ayman El-BazAyman El-Baz
Ayman El-Baz
Breast cancer stands out as the most frequently identified malignancy, ranking as the fifth leading cause of global cancer-related deaths. The American College of Radiology (ACR) introduced the Breast Imaging Reporting and Data System (BI-RADS) as a standard terminology facilitating communication between radiologists and clinicians; however, an update is now imperative to encompass the latest imaging modalities developed subsequent to the 5th edition of BI-RADS. Within this review article, we provide a concise history of BI-RADS, delve into advanced mammography techniques, ultrasonography (US), magnetic resonance imaging (MRI), PET/CT images, and microwave breast imaging, and subsequently furnish comprehensive, updated insights into Molecular Breast Imaging (MBI), diagnostic imaging biomarkers, and the assessment of treatment responses. This endeavor aims to enhance radiologists’ proficiency in catering to the personalized needs of breast cancer patients. Lastly, we explore the augmented benefits of artificial intelligence (AI), machine learning (ML), and deep learning (DL) applications in segmenting, detecting, and diagnosing breast cancer, as well as the early prediction of the response of tumors to neoadjuvant chemotherapy (NAC). By assimilating state-of-the-art computer algorithms capable of deciphering intricate imaging data and aiding radiologists in rendering precise and effective diagnoses, AI has profoundly revolutionized the landscape of breast cancer radiology. Its vast potential holds the promise of bolstering radiologists’ capabilities and ameliorating patient outcomes in the realm of breast cancer management.

6 January 2020 in Journal of the Egyptian National Cancer Institute
Verified
Journal Article
Open access
PDF file
OHOmar Hamdy
Omar Hamdy
SRSara Raafat
Sara Raafat
GSGehad A. Saleh
Gehad A. Saleh
SAShadi Awny
Shadi Awny
ASAbdelhadi M. Shebl
Abdelhadi M. Shebl
MHMohammed A. Hegazy
Mohammed A. Hegazy
Background: Ameloblastoma is the commonest odontogenic tumour of epithelial origin with a high incidence for developing local recurrence. We present a patient who developed local recurrence in both soft tissue and bone graft 17 years after the initial presentation. Case presentation: A 75-year-old female with a previous history of right hemimandibulectomy and rib reconstruction for ameloblastoma in 1999 presented to our centre with a large cystic mouth floor swelling, biopsy from which revealed recurrent ameloblastoma. The patient underwent excision of the recurrent mass en bloc with the cystic swelling through oral and cervical approaches. The patient was discharged after 5 days with an uneventful postoperative course and with a free 2-year follow-up from further recurrence. Conclusion: Ameloblastoma is a locally aggressive tumour for which wide local excision with adequate margins is the best management approach. Recurrence of ameloblastoma even after adequate resection is not uncommon, and its management is considered a surgical challenge. A very long time may pass between the initial presentation and the development of recurrence.

1 December 2023 in Cancers
Verified
Journal Article
Open access
PDF file
YSYara Sakr
Yara Sakr
OHOmar Hamdy
Omar Hamdy
MEMaher Eldeghedi
Maher Eldeghedi
RARabab Abdelaziz
Rabab Abdelaziz
EMEchreiva Med Sidi El Moctar
Echreiva Med Sidi El Moctar
SAShadi Awny
Shadi Awny
The tongue is the most common site for oral cavity carcinoma. It typically has male predominance. However, several studies have documented an increasing number of incidences among the younger population, with female predominance, which is unusual. In this study, we aimed to determine current trends in tongue cancer regarding age and gender. Data from 197 tongue cancer patients were extracted from The Oncology Center, Mansoura University (OCMU) database from 2006 to 2021. The patients were divided into two time periods: (2006–2013) and (2014–2021). We computed counts and proportions of tongue cancer for demographic and tumor characteristics. The data were analyzed using SPSS. Gender showed no statistically significant difference in both groups, while the percentages of diagnosed females were 52.7% and 52%, respectively. The percentages of males were 47.3% and 48%, p-value = 0.927. There was a statistically significant difference in the number of patients aged 20 to 39 years old and ≥60 years old in both periods. The p-values were 0.039 and 0.011, respectively. Although tongue cancer is typically more common in males, our results showed no significant difference in the gender of diagnosed patients. In addition, our results showed that the number of younger patients significantly increased in the period from 2014 to 2021. However, we encourage further investigations involving larger populations.

1 September 2020 in The Annals of The Royal College of Surgeons of England
Verified
Journal Article
Closed access
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OHOmar Hamdy
Omar Hamdy
SAS Awny
S Awny
IMIh Metwally
Ih Metwally
Introduction: Medullary thyroid carcinoma (MTC) is a neuroendocrine thyroid carcinoma with parafollicular C cell differentiation. It can occur in either sporadic or hereditary form. Surgery is still the only curative treatment. The efficacy of chemotherapy and radiotherapy is poor. Methods: This was a retrospective study of 31 patients treated surgically for MTC in our oncology centre at Mansoura University between January 2008 and February 2019. Results: The mean age at diagnosis was 39.9 years. The median pathological size was 4cm. Multifocal disease was found in 12 patients and extrathyroid extension in 3 cases. Twenty patients were pathologically node positive. The median number of positive lymph nodes was four. Seven cases were metastatic at diagnosis. Local recurrence occurred in six individuals while distant recurrence occurred only in one. The median time from surgery to local recurrence was 12 months. The estimated mean disease free survival was 56.5 months. Disease free survival was significantly related to age, metastasis and side of nodal spread. Conclusions: In our study cohort, the disease occurred predominantly in women and younger patients. Age, distant metastasis and nodal spread were the most significant prognostic factors. This study has also demonstrated that prognosis is not only affected by nodal involvement but also by side of involvement. The role of hemithyroidectomy in node negative unifocal disease with a small tumour size warrants further investigation.

17 January 2020 in Journal of the Egyptian National Cancer Institute
Verified
Journal Article
Open access
PDF file
OHOsama Hussein
Osama Hussein
KAKhaled Abdelwahab
Khaled Abdelwahab
OHOmar Hamdy
Omar Hamdy
SAShadi Awny
Shadi Awny
NMNermin A. Megahed
Nermin A. Megahed
MAMohamed Abdelkhalek
Mohamed Abdelkhalek
Background: Hashimoto thyroiditis (HT) is an autoimmune lymphocytic thyroiditis and is the most common form of thyroid inflammatory diseases. The association of HT with papillary thyroid carcinoma (PTC) has been described. PTC is the most common form of malignancy associated with HT. When papillary carcinoma develops on top of Hashimoto thyroiditis, the disease tends to be less aggressive and lymph node and extra-thyroidal invasion are infrequent. Results: We retrospectively examined the pathological features of our patients who were diagnosed with concomitant HT and thyroid cancer. In Egyptian patients, PTC was the main type of malignancy associated with HT (96.2%) and was often multifocal (46.2%). In contrast to the published literature, lymph node invasion and extra-thyroidal extension were as frequent in association with HT as in other cancer cohorts. We also observed the frequent occurrence of Hürthle cell metaplasia (23.1%) and the appreciable incidence of aggressive histological types of PTC (32%). Conclusion: Thyroid carcinoma with HT may have some aggressive features in areas with endemic goiter background.