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Momtaz, M., A. Ebrashy, M. M. Aboulghar, S. Negm, R. Kamel, and A. Alkateb, "OC060: Comparison of 2D transvaginal sonohysterography and 3D ultrasound evaluation of the uterine cavity in infertile women", Ultrasound in Obstetrics and Gynecology, vol. 32, issue 3: Wiley Online Library, pp. 262-262, 2008. Abstract
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Kamel, R. A., "OC08. 04: Position and integrity of the uterine scar is determined by cervical dilation at the time of Caesarean section", Ultrasound in Obstetrics & Gynecology, vol. 56: Wiley Online Library, pp. 24-24, 2020. Abstract
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Negm, S., R. Kamel, M. Momtaz, and A. Magdy, "OC08. 07: Assessment of cervical length at mid gestation by transvaginal ultrasound as a predictor of Cesarean delivery at term in primiparous women", Ultrasound in Obstetrics & Gynecology, vol. 34, issue S1: Wiley Online Library, pp. 15-15, 2009. Abstract
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Negm, S., R. Kamel, M. Momtaz, and A. Magdy, "OC08. 07: Assessment of cervical length at mid gestation by transvaginal ultrasound as a predictor of Cesarean delivery at term in primiparous women", Ultrasound in Obstetrics & Gynecology, vol. 34, issue S1: Wiley Online Library, pp. 15-15, 2009. Abstract
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Aboulghar, M. M., M. A. Aboulghar, H. Al-Inany, A. Abousetta, G. I. Serour, and R. T. Mansour, "OC091: 3D endometrial volume on day of hCG and IVF outcome: a prospective study", Ultrasound in Obstetrics & Gynecology, vol. 24, pp. 241–241, 2004. Abstract
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Kamel, R., S. Negm, I. Badr, B. H. Kahrs, T. M. Eggebo, and J. K. Iversen, "OC14. 02: Fetal head descent assessed by transabdominal ultrasound: a prospective observational study", Ultrasound in Obstetrics & Gynecology, vol. 58: Wiley Online Library, pp. 40-41, 2021. Abstract
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Kamel, R., S. Negm, I. Badr, B. H. Kahrs, T. M. Eggebo, and J. K. Iversen, "OC14. 02: Fetal head descent assessed by transabdominal ultrasound: a prospective observational study", Ultrasound in Obstetrics & Gynecology, vol. 58: Wiley Online Library, pp. 40-41, 2021. Abstract
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Momtaz, M., A. Ebrashy, M. M. Aboulghar, A. Z. AlSheikha, A. Alkateb, S. Negm, and R. Kamel, "OC190: Three‐dimensional transvaginal sonography in the evaluation of the uterine cavity", Ultrasound in Obstetrics and Gynecology, vol. 32, issue 3: Wiley Online Library, pp. 305-305, 2008. Abstract
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Momtaz, M., A. Ebrashy, M. M. Aboulghar, A. Z. AlSheikha, A. Alkateb, S. Negm, and R. Kamel, "OC190: Three‐dimensional transvaginal sonography in the evaluation of the uterine cavity", Ultrasound in Obstetrics and Gynecology, vol. 32, issue 3: Wiley Online Library, pp. 305-305, 2008. Abstract
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ElMotayam, K. M., and A. A. Elbardisyy, "OCCLUSAL CHARACTERISTICS OF PRIMARY DENTITION IN PRESCHOOL EGYPTIAN CHILDREN. ", Cairo Dental Journal, vol. 23, issue 2, pp. 217-226, 2007.
Rady, H. I., H. Samir, R. Tomerak, and M. Gaafar, "Occult Blood in Stool in exclusively Formula Fed Infants versus Exclusively Breast fed Infants in The First six Months of Life", Egyptian Pediatric Association Gazette, vol. 62, issue 1, pp. 8-13, 2014. occult_blood_in_stool.pdf
Rady, H. I., H. Samir, R. Tomerak, and M. Gaafar, "Occult blood in stool in exclusively formula fed infants versus exclusively breast fed infants in the first six months of life", Egyptian Pediatric Association Gazette, vol. 62, no. 1: Elsevier, pp. 8–13, 2014. Abstract
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Rady, H. I., H. Samir, R. Tomerak, and M. Gaafar, "Occult blood in stool in exclusively formula fed infants versus exclusively breast fed infants in the first six months of life", Egyptian Pediatric Association Gazette, vol. 62, issue 1, pp. 8–13, 2014.
ZK, H., H. MM, M. TM, and Z. AR., "Occult HBV Infection Among Egyptian Hepatocellular Carcinoma Patients", Virology Journal, vol. 8:90, 2011. AbstractCU-PDF.pdf

Background: Occult HBV infection accelerates the progression of liver fibrosis, cirrhosis, and finally leading to hepatocellular carcinoma (HCC). This study analyzed the occult HBV-genotypes in HCC patients.

Hassan, Z. K., M. M. Hafez, T. M. Mansor, and A. R. N. Zekri, "Occult HBV infection among Egyptian hepatocellular carcinoma patients.", Virology journal, vol. 8, pp. 90, 2011. Abstract

BACKGROUND: Occult HBV infection accelerates the progression of liver fibrosis, cirrhosis, and finally leading to hepatocellular carcinoma (HCC). This study analyzed the occult HBV-genotypes in HCC patients.

METHODS: To achieve our objective, matched serum and tissue samples were collected from 40 HCC patients. Three sets of primers were used for the HBV-DNA detection by nested-PCR, which cover the HBV-genome; Core, Surface and X genes. Genotyping system based on PCR using type-specific primers was applied on HBV-DNA positive samples.

RESULTS: Intrahepatic occult HBV-DNA was detected in 62.5%, whereas; Serum occult HBV-DNA were detected in only 22.5% of HCC patients. In patients' positive for both anti-HBs and anti-HBc, 10% had occult HBV in serum. In serologically negative HCV patients, 63% had intrahepatic HBV-DNA, and 21% had HBV-DNA in serum samples. HBV-genotype D (32%) and B (24%) attributed predominantly to intrahepatic HBV infections in HCC patients, whereas HBV-genotype A (4%) and C (8%) infections were the least observed.

CONCLUSION: This is the first study to show the genotypes of occult HBV infection in HCC Patients. We suggest that B or D may influence the outcome of HBV infection which may lead to the development of HCC.

Naga, M., M. Amin, A. Elbadry, M. Fawzy, S. Esmat, and S. Gabal, "Occult Hepatitis B Virus infection in a cohort of patients with chronic Hepatitis C", Arch Hepat Res , vol. 5, issue 1, pp. 017-021, 2019.
Foaud, H., S. Maklad, F. Mahmoud, and H. El-Karaksy, "Occult hepatitis B virus infection in children born to HBsAg-positive mothers after neonatal passive-active immunoprophylaxis.", Infection, vol. 43, issue 3, pp. 307-14, 2015 Jun. Abstract

BACKGROUND: Occult hepatitis B virus infection (OBI) is a well-recognized clinical entity characterized by the detection of HBV DNA in serum and/or liver in the absence of detectable HBsAg. Diagnosis of OBI requires a sensitive HBV DNA assay.

AIM: We aimed at determining the frequency of OBI in infants, born to HBsAg-positive mothers, who received immunoprophylaxis at birth.

METHODS: Sixty-four infants and children, born to HBsAg-positive mothers, who received hepatitis B immunoglobulin and HBV vaccine within 48 h after birth, were tested for HBV serological profile and HBV DNA by real-time PCR at least 1 month after last dose of HBV vaccine and not before 6 months of age.

RESULTS: The median age of the studied infants and children was 8 months, ranging from 6 to 132 months; 54.7 % were females. HBV DNA was detected in 2 infants. One case had OBI; she was negative for HBsAg, anti-HBc total, HBeAg and was positive for anti-HBs (titer 267 mIU/mL) with low level of viremia (HBV DNA 1.13 x 10(3) IU/mL). Another infant showed immunoprophylaxis failure with positive HBsAg, anti-HBc total, HBeAg, negative anti-HBe and anti-HBs; HBV viral load was 1.7 × 10(8) IU/mL. Both mothers were HBsAg and HBeAg-positive.

CONCLUSION: OBI may occur in infants born to HBsAg-positive mothers despite the receipt of immunoprophylaxis. OBI was detected in a low frequency in the present study. Anti-HBs positivity does not exclude OBI.

Khedr, S., A. Piskorski, A. R. Bingham, J. Goldstein, A. R. Laptook, and M. E. De Paepe, "Occult Massive Visceral Fat Necrosis Following Therapeutic Hypothermia for Neonatal Encephalopathy.", Pediatric and developmental pathology : the official journal of the Society for Pediatric Pathology and the Paediatric Pathology Society, pp. 1093526617737881, 2017 Jan 01. Abstract

Therapeutic hypothermia (head or whole-body cooling) improves survival and neurodevelopmental outcome in term newborns with moderate-to-severe encephalopathy. Hypothermia treatment is well tolerated; the most common side effect is thrombocytopenia. In about 1% of infants, focal subcutaneous fat necrosis has been reported. We describe a case of clinically unsuspected massive visceral fat necrosis in a term infant with Apgar score 0 at 1 min ("resuscitated apparently stillborn" infant) who was treated with therapeutic hypothermia for 72 h and expired on the 25th day of life following a neonatal course complicated by severe encephalopathy, pulmonary artery hypertension, persistent thrombocytopenia, hypoglycemia, and severe basal ganglia-thalamic abnormalities on magnetic resonance imaging. Postmortem examination revealed extensive visceral (brown) fat necrosis, involving thoracic, abdominal, and retroperitoneal adipose tissue, with distinctive sparing of the subcutaneous (white) fat. The fulminant-yet clinically occult-visceral fat necrosis seen in this case suggests that (lesser degrees of) fat necrosis may go unrecognized in hypoxic-ischemic newborns, especially in those treated with hypothermia, and underscores the importance of close monitoring of encephalopathic newborns both in the short and long terms for complications of fat necrosis (hypercalcemia and nephrocalcinosis).

Elberry, M. H., and H. Ahmed, "Occult SARS-CoV-2 infection; a possible hypothesis for viral relapse.", Medical hypotheses, vol. 144, pp. 109980, 2020. Abstract1-s2.0-s0306987720313475-main.pdf

Coronavirus disease 2019 (COVID-19) has emerged as a global public health emergency, which is characterized by high infection rate and fatal course. Recent data reported that the test for Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) RNA might become positive again after one or two consecutively negative tests. Many researchers are currently evaluating the clinical characteristics of the SARS-CoV-2 reactivation. In this letter, we proposed a possible mechanism of SARS-CoV-2 reactivation or relapse after negative nasopharyngeal swabs PCR.

Elberry, M. H., and H. Ahmed, "Occult SARS-CoV-2 infection; a possible hypothesis for viral relapse.", Medical hypotheses, vol. 144, pp. 109980, 2020. Abstract

Coronavirus disease 2019 (COVID-19) has emerged as a global public health emergency, which is characterized by high infection rate and fatal course. Recent data reported that the test for Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) RNA might become positive again after one or two consecutively negative tests. Many researchers are currently evaluating the clinical characteristics of the SARS-CoV-2 reactivation. In this letter, we proposed a possible mechanism of SARS-CoV-2 reactivation or relapse after negative nasopharyngeal swabs PCR.

ahmed abd alrhman hassan AL, P. R. O. eglal ahmed ASS, and magda abd elhamid PRO.ASS, occupation health hazards among health team members in cardiac cauterization unit , , Cairo , Cairo university , 2014.
A. Hassan, E..Abdelwahab, and A. M. elfattah, occupation health hazards among health team members in cardiac cauterization unit , , Cairo , Cairo university , 2014.
Mohamed, M. Y. A., S. B. El-Din, and E. M. `wd E. sayed, "occupational and environmental health hazards among intensive care unit nurses at a university hospital in cairo", 4th international scientific nursing conference 2015, faculty of nursing - Cairo University, 15 December, 2015.
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