Omar Halalsheh

Omar Halalsheh


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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16 May 2023 in Urology Case Reports
Verified
Journal Article
Open access
ASAhmed H Hesham Al Sharie
Ahmed H Hesham Al Sharie
YZYazan O. Al Zu'BI
Yazan O. Al Zu'BI
NANadeem Alabdallah
Nadeem Alabdallah
HBHawra A. Baydoun
Hawra A. Baydoun
SKSohaib Al Khatib
Sohaib Al Khatib
OHOmar Halalsheh
Omar Halalsheh
Renal cell carcinoma (RCC) exhibits a propensity for unusual wide metastasis. Cutaneous metastasis from RCC is a rare and poorly recognized clinical entity. We present a case of cutaneous metastasis of poorly differentiated RCC in 49-year-old male patient. In the presented case, the skin lesion was the first sign of widely spread RCC. After the establishment of the diagnosis using radiological and histopathological assessments, the patient was labeled as a terminal case and was referred for pain management. He deceased after 6 months of the initial presentation.

18 January 2024 in Medicina
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Journal Article
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SBSamir M Al Bashir
Samir M Al Bashir
MAMohammed Alorjani
Mohammed Alorjani
Khalid A. KheirallahKhalid A. Kheirallah
Khalid A. Kheirallah
MHMohammad Abdelqader Al Hamad
Mohammad Abdelqader Al Hamad
HHHusam K. Haddad
Husam K. Haddad
IMIsmail I. Matalka
Ismail I. Matalka
Background and Objectives: Prognostic biomarkers in prostate cancer (PCa) include PTEN, ERG, SPINK1, and TFF3. Their relationships and patterns of expression in PCa in developing countries, including Jordan, have not yet been investigated. Materials and Methods: A tissue microarray (TMA) of PCa patients was taken from paraffin-embedded tissue blocks for 130 patients. PTEN, ERG, SPINK1, and TFF3 expression profiles were examined using immunohistochemistry (IHC) and correlated with each other and other clinicopathological factors. Results: PTEN loss of any degree was observed in 42.9% of PCa cases. ERG and TFF3 were expressed in 59.3% and 46.5% of PCa cases, respectively. SPINK1 expression was observed in 6 out of 104 PCa cases (5.4%). Among all PCa cases (n = 104), 3.8% (n = 4) showed SPINK1+/ERG+ phenotype, 1.9% (n = 2) showed SPINK1+/ERG- phenotype, 56.7% (n = 59) showed SPINK1-/ERG+ phenotype, and 37.5% showed SPINK1-/ERG- phenotype (n = 39). Among ERG positive cases (n = 63), 6.3% were SPINK1 positive. Among SPINK1 positive cases (n = 6), 66.7% were ERG positive. SPINK1 expression was predominantly observed in a subgroup of cancers that expressed TFF3 (6/6). Additionally, a statistically significant loss of PTEN expression was observed from Gleason Score 6 (GS6) (Grade Group 1 (GG1)) to GS9-10 (GG5); (p-value 0.019). Conclusions: This is the first study to look at the status of the PTEN, ERG, SPINK1, and TFF3 genes in a Jordanian Arab population. Loss of PTEN has been linked to more aggressive prostate cancer with high GSs/GGs. SPINK1 expression was predominantly observed in a subgroup of cancers that expressed TFF3. Our results call for screening these biomarkers for grading and molecular subtyping of the disease.

30 June 2020 in BMC Urology
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Journal Article
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NANajla Aldaoud
Najla Aldaoud
AHAmer Hallak
Amer Hallak
LRLiqa A Rousan
Liqa A Rousan
OHOmar Halalsheh
Omar Halalsheh
BDBashar Darayseh
Bashar Darayseh
MAMousa Al-Abbadi
Mousa Al-Abbadi
Background: Myxoma is a relatively rare mesenchymal tumor seen mainly in the heart and skin. Renal myxomas in particular are exceptionally rare where only 17 cases were previously reported in the English Language literature. Only 2 of the 17 reported cases were located in the renal sinus/pelvis. Case presentation: This is a case of an 18-year-old male patient who complained of right, colicky flank pain associated with abdominal pain and discomfort. Imaging findings revealed right kidney hydronephrosis with a provisional diagnosis of pelviureteric junction (PUJ) stenosis. On computed tomography, there was a very faint thin walled mass abutting the calyces, camouflaged within the dilated renal pelvis. During surgery, a polypoid mass was found at the pelviureteric junction, causing the obstruction. Histological examination showed a hypocellular, paucivascular myxoid neoplasm, with few spindle cells displaying serpentine nuclei and inconspicuous nucleoli. The tumor cells expressed immunoreactivity for vimentin, but not for S100, CD34, actin, or desmin. This will qualify as the third case of renal pelvis myxoma. Conclusion: Myxomas in the renal pelvis/sinus are extremely rare and can present with hydronephrosis and subtle radiological findings mimicking a PUJ stenosis. Being aware of this entity can save the patient unnecessary nephrectomy with possible preservation of the kidney.

24 October 2022 in Medicina
Verified
Journal Article
Open access
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OHOmar Halalsheh
Omar Halalsheh
YZYazan O. Al Zu’bi
Yazan O. Al Zu’bi
ASAhmed H Hesham Al Sharie
Ahmed H Hesham Al Sharie
FWFarouk Wafai
Farouk Wafai
NANadeem Bilal Alabdallah
Nadeem Bilal Alabdallah
OAOsama Alshari
Osama Alshari
Background and Objectives: Chemotherapy-induced febrile neutropenia is the most widespread oncologic emergency with high morbidity and mortality rates. Herein we present a retrospective risk factor identification study to evaluate the prognostic role of lymphocyte-based measures and ratios in a cohort of chemotherapy-induced febrile neutropenia patients following granulocyte colony-stimulating factor (G-CSF) therapy. Materials and Methods: The electronic medical records at our center were utilized to identify patients with a first attack of chemotherapy-induced febrile neutropenia and were treated accordingly with G-CSF between January 2010 to December 2020. Patients’ demographics and disease characteristics along with laboratory tests data were extracted. Prognosis-related indicators were the absolute neutrophil count (ANC) at admission and the following 6 days besides the length of stay and mortality rate. Results: A total of 80 patients were enrolled, which were divided according to the absolute lymphocyte count at admission into two groups, the first includes lymphopenia patients (n = 55) and the other is the non-lymphopenia group (n = 25) with a cutoff point of 700 lymphocytes/μL. Demographics and baseline characteristics were generally insignificant among the two groups but the white blood cell count was higher in the non-lymphopenia group. ANC, neutrophils percentage and ANC difference in reference to admission among the two study groups were totally insignificant. The same insignificant pattern was observed in the length of stay and the mortality rate. Univariate analysis utilizing the ANC difference compared to the admission day as the dependent variable, revealed no predictability role in the first three days of follow up for any of the variables included. However, during the fourth day of follow up, both WBC (OR = 0.261; 95% CI: 0.075, 0.908; p = 0.035) and lymphocyte percentage (OR = 1.074; 95% CI: 1.012, 1.141; p = 0.019) were marginally significant, in which increasing WBC was associated with a reduction in the likelihood of ANC count increase, compared to the lymphocyte percentage which exhibited an increase in the likelihood. In comparison, sequential ANC difference models demonstrated lymphocyte percentage (OR = 0.961; 95% CI: 0.932, 0.991; p = 0.011) and monocyte-to-lymphocyte ratio (OR = 7.436; 95% CI: 1.024, 54.020; p = 0.047) reduction and increment in the enhancement of ANC levels, respectively. The fifth day had WBC (OR = 0.790; 95% CI: 0.675, 0.925; p = 0.003) to be significantly decreasing the likelihood of ANC increment. Conclusions: we were unable to determine any concrete prognostic role of lymphocyte-related measures and ratios. It is plausible that several limitations could have influenced the results obtained, but as far as our analysis is concerned ALC role as a predictive factor for ANC changes remains questionable.

4 August 2023 in Journal of Surgical Case Reports
Verified
Journal Article
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SASaleh Abuorouq
Saleh Abuorouq
FSFiras Sahawneh
Firas Sahawneh
OHOmar Halalsheh
Omar Halalsheh
HHHusam K Haddad
Husam K Haddad
RMRaed Mekail
Raed Mekail
Hashem Abu SerhanHashem Abu Serhan
Hashem Abu Serhan
Chromophobe renal cell carcinoma (CRCC) is a subtype of renal cell carcinoma (RCC) with a favorable prognosis. Sarcomatoid differentiation in RCC is assumed to be the outcome of the parent tumor’s dedifferentiation and associated with poorer prognosis. Sarcomatoid differentiation can be detected in CRCC as well as other subtypes, but the occurrence of divergent osteosarcoma-like components in sarcomatoid CRCC is extremely unusual. Only six cases have been previously reported in the literature, we reviewed them and presented the seventh case in a 71-year-old male who had a left kidney heterogeneous mass. The resected tumor showed a sarcoma-like spindle cell area with an adjacent osteosarcoma area producing lacy bone material and bony trabeculae in a hard area mixed with a typical CRCC. In conclusion, sarcomatoid CRCC with osteosarcomatous differentiation is a very rare tumor and should be kept in mind especially when dealing with small or frozen sections biopsies.

1 June 2019 in Research and Reports in Urology
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Journal Article
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OHOmar Halalsheh
Omar Halalsheh
AAAlia Al-Mohtaseb
Alia Al-Mohtaseb
AAAnas Ibrahim Al-Karasneh
Anas Ibrahim Al-Karasneh
MAMustafa Mokhalad Al-Janabi
Mustafa Mokhalad Al-Janabi
AHAmer Hussein Hallak
Amer Hussein Hallak
Granulosa cell tumor (GCT) is a sex-cord neoplasm of the gonads classified into either juvenile (jGrCT) or adult type (aGrCT). It is commonly arising in ovaries but is much rarer in men, with only around 50 male cases previously reported in the literature. We report on a 54-year-old male patient with a right testicular GCT measuring 10.0×8.0×6.0 cm. The tumor was treated successfully with radical orchiectomy followed by computed tomography to assess lymph node involvement, and no further treatment was done. Pathological reports showed diffuse positivity for immunohistochemical stains, inhibin, vimentin, calretinin, and CD99. The clinical and histopathological features, treatment, and prognosis of aGrCT arising in the testicle of an adult male are also reviewed in this manuscript.