THE TREATMENT OF PELVIC MALIGNANCIES WITH RADIOISOTOPES

1958 ◽  
Vol 1 (4) ◽  
pp. 1058-1069
Author(s):  
ALFRED I. SHERMAN ◽  
WILLARD M. ALLEN
Keyword(s):  
Pelvic Malignancies

scholarly journals Radiation-induced toxicity in rectal epithelial stem cell contributes to acute radiation injury in rectum

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Felipe Rodriguez Tirado ◽  
Payel Bhanja ◽  
Eduardo Castro-Nallar ◽  
Ximena Diaz Olea ◽  
Catalina Salamanca ◽  
...  
Keyword(s):  
Stem Cells ◽  
Ex Vivo ◽  
Cre Recombinase ◽  
Lineage Tracing ◽  
Common Side Effect ◽  
Rectal Injury ◽  
Male Mice ◽  
Pelvic Irradiation ◽  
Pelvic Malignancies ◽  
Radiation Induced

Abstract Background Radiation-induced rectal epithelial damage is a very common side effect of pelvic radiotherapy and often compromise the life quality and treatment outcome in patients with pelvic malignancies. Unlike small bowel and colon, effect of radiation in rectal stem cells has not been explored extensively. Here we demonstrate that Lgr5-positive rectal stem cells are radiosensitive and organoid-based transplantation of rectal stem cells mitigates radiation damage in rectum. Methods C57Bl6 male mice (JAX) at 24 h were exposed to pelvic irradiation (PIR) to determine the radiation effect in pelvic epithelium. Effect of PIR on Lgr5-positive rectal stem cells (RSCs) was determined in Lgr5-EGFP-Cre-ERT2 mice exposed to PIR. Effect of PIR or clinically relevant fractionated PIR on regenerative response of Lgr5-positive RSCs was examined by lineage tracing assay using Lgr5-eGFP-IRES-CreERT2; Rosa26-CAG-tdTomato mice with tamoxifen administration to activate Cre recombinase and thereby marking the ISC and their respective progeny. Ex vivo three-dimensional organoid cultures were developed from Lgr5-EGFP-Cre-ERT2 mice. Organoid growth was determined by quantifying the budding crypt/total crypt ratio. Organoids from Lgr5-EGFP-ires-CreERT2-TdT mice were transplanted in C57Bl6 male mice exposed to PIR. Engraftment and repopulation of Lgr5-positive RSCs were determined after tamoxifen administration to activate Cre recombinase in recipient mice. Statistical analysis was performed using Log-rank (Mantel-Cox) test and paired two-tail t test. Result Exposure to pelvic irradiation significantly damaged rectal epithelium with the loss of Lgr5+ve rectal stem cells. Radiosensitivity of rectal epithelium was also observed with exposure to clinically relevant fractionated pelvic irradiation. Regenerative capacity of Lgr5+ve rectal stem cells was compromised in response to fractionated pelvic irradiation. Ex vivo organoid study demonstrated that Lgr5+ve rectal stem cells are sensitive to both single and fractionated radiation. Organoid-based transplantation of Lgr5+ve rectal stem cells promotes repair and regeneration of rectal epithelium. Conclusion Lgr5-positive rectal stem cells are radiosensitive and contribute to radiation-induced rectal epithelial toxicity. Transplantation of Lgr5-positive rectal stem cells mitigates radiation-induced rectal injury and promotes repair and regeneration process in rectum.

MR IMAGING OF FEMALE PELVIC MALIGNANCIES

2000 ◽  
Vol 8 (4) ◽  
pp. 887-914
Author(s):  
Pascale Audet ◽  
Josie Pressacco ◽  
Maureen Burke ◽  
Caroline Reinhold
Keyword(s):  
Mr Imaging ◽  
Pelvic Malignancies

scholarly journals Review of Gynaecological Diagnoses and Surgeries Performed at a Tertiary Health Facility in Niger-Delta of Nigeria from 2012-2017: Implications for Healthcare Planning and Budgeting

2020 ◽  
pp. 1-10
Author(s):  
P. A. Awoyesuku ◽  
D. A. MacPepple ◽  
B. O. Altraide ◽  
D. H. John
Keyword(s):  
Health Facility ◽  
Uterine Fibroid ◽  
Assisted Reproductive Technologies ◽  
Descriptive Analysis ◽  
Reproductive Technologies ◽  
Reproductive Age ◽  
University Teaching ◽  
Common Cause ◽  
Healthcare Planning ◽  
Pelvic Malignancies

Background: Gynaecological disorders are a particularly common cause of morbidity and mortality among women of reproductive age and a common cause of hospital presentation/admission and surgery. Objective: This study sought to review gynaecological diagnoses and surgeries performed in a tertiary health facility from 2012 to 2017 and its implication for healthcare planning and budgeting. Methodology: This was a retrospective review of all gynaecological diagnoses and surgeries seen in the Rivers State University Teaching Hospital (RSUTH) from 2012 to 2017. Data were retrieved using a proforma comprising of year, gynaecological diagnosis and gynaecological surgeries. Data obtained was entered into Microsoft Excel for descriptive analysis. Results: The proportion of clinic attendees declined from an average of 23% in the first three years (2012-2014) to about 10% in the last three years (2015-2017). The most common gynaecological diagnosis were uterine fibroid (33.3%), infertility 28.1% (primary 5.7%, secondary 22.4%), PID (5.9%), ovarian tumour (4.2%), secondary amenorrhea (3.4%) and pelvic malignancies (3.4%). The commonest major surgeries were myomectomy 441(33.7%), salpingectomy 345(26.4%), hysterectomy 168(12.8%) and cervical cerclage 122(9.3%). The commonest minor surgeries were manual vacuum aspiration 314(41.0%), examination under anaesthesia and biopsy 110(14.3%) and adhesiolysis for synechiae 97(12.6%). The duo of uterine fibroid and infertility made up 50%-70% of all gynaecological diagnoses. Conclusion: This study showed that there has been a steady decline in gynaecological consultations over the years. However, the duo of uterine fibroid and infertility made up half to three-quarter of all gynaecological diagnoses over the 6 years. Infertility and uterine fibroids have a long cause and effect association. Healthcare policies and budgeting should be increased towards tackling these conditions, especially the setting up of a fertility center to provide assisted reproductive technologies and laparoscopy to improve practice and patient outcome.

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