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THE BASIC KONHAUSER MATRIX POLYNOMIALS
( Ayman Shehata ) 호남수학회 2020 호남수학학술지 Vol.42 No.3
The family of q-Konhauser matrix polynomials have been extended to Konhauser matrix polynomials. The purpose of the present work is to show that an extension of the explicit forms, generating matrix functions, matrix recurrence relations and Rodrigues-type formula for these matrix polynomials are given, our desired results have been established and their applications are presented.
Ileo-uterine fistula in a degenerated posterior wall fibroid after Caesarean section
Shehata, Ayman,Hussein, Naglaa,El Halwagy, Ahmed,El Gergawy, Adel,Khairallah, Mohamed The Korean Society for Reproductive Medicine 2016 Clinical and Experimental Reproductive Medicine Vol.43 No.1
Uterine fibroids are benign tumors of the myometrium with a diverse range of manifestations. Fibroids can dramatically increase in size during pregnancy due to the increase in estrogen levels. After delivery, the fibroids usually shrink back to their pre-pregnancy size. Uterine myomas may have many complications, including abnormal uterine bleeding, infertility, pressure on nearby organs, degeneration, and malignant transformation. No previous reports have indicated that a fistula may develop between a uterine fibroid and the bowel loops, although previous studies have documented the occurrence of fistulas from the uterus to the bowel following myomectomy or uterine artery embolization performed to treat a myoma. In our case report, we document the rare complication of a fistula occurring between a degenerated myoma in the posterior wall and the ileum 1 week postoperatively in a patient who underwent a Caesarean section but did not have a history of uterine artery embolization.
Ayman Shehata Dawood,Heba Fouad Harras,Hossam Ramadan Moussa,Ahmed Saber Soliman 대한산부인과학회 2022 Obstetrics & Gynecology Science Vol.65 No.6
ObjectiveTo evaluate the feasibility, safety, and surgical outcomes of laparoscopic trachelectomy after supracervical hysterectomy. MethodsThis multicenter study was conducted at Tanta University, Benha University, and Aminah Laparoscopy Center (Benha,Egypt) from June 1, 2018 to October 31, 2021. Forty patients were recruited for this study and counseled on laparoscopictrachelectomy to treat their symptoms after supracervical hysterectomy. Furthermore, cervical biopsy was performedto detect and exclude any malignancy. Histopathological examination of cervical specimens was performedafter surgery. Operative details and outcomes were recorded. ResultsThe median age of the patients was 42 years (range, 38-47). The median body mass index was 25 years (range, 22-28). The median interval between hysterectomy and the clinical presentation was 4.40 years (range, 3.58-5.25). Mostpatients presented with abnormal vaginal discharge (40%) and bleeding (25%). Moreover, a cervical biopsy result revealedstump carcinoma in three cases (7.5%) that were excluded. The median operative time was 210 minutes (range,170-220). The median blood loss was 270 mL (range, 220-320). Additionally, histopathological examinations revealedthat chronic non-specific cervicitis was present in 54.05% of trachelectomy specimens. There were no significant differencesbetween symptomatic and asymptomatic patients regarding operative outcomes, except adhesions, whichwere more significantly increased in symptomatic patients (P=0.015). Minimal complications, both operative and postoperative,were related to the procedure. ConclusionAlthough the operative time was long and adhesions were common during laparoscopic trachelectomy, the procedurewas feasible and safe, with minimal complications.
Dawood, Ayman Shehata,Salem, Hesham Abdelaziz The Korean Society for Reproductive Medicine 2018 Clinical and Experimental Reproductive Medicine Vol.45 No.2
The purpose of this paper is to review the current clinical uses of platelet-rich plasma (PRP) in the field of gynecology. All relevant articles published from January 2000 to December 2017 were reviewed and analyzed. The articles on PRP in the field of gynecology were mainly case series, pilot studies, or case reports. PRP is currently considered a new therapeutic modality for some disorders that are refractory to conventional drugs.