Drug-coated balloons versus conventional percutaneous transluminal angioplasty for treatment-naïve dysfunctional arteriovenous fistulas.: A 10-year single center retrospective study.

OBJECTIVES: To compare the primary patency and restenosis rates in treatment naieve dialysis arteriovenous fistulas (AVFs) after drug-coated balloons (DCB) versus plain balloon angioplasty (PTA). METHODS: This retrospective study included 157 patients who underwent AVF angioplasty for treatment-native AVF stenosis between January 2012 to 2022. The fistulas were Brachiocephalic (75%), Brachiobasilic (17%), and radiocephalic (8%). The index intervention was with either DCB or percutaneous transluminal angioplasty (PTA) with subsequent follow up. Patients with central venous stenosis, thrombosed fistula, fistula stents, AV graft or surgical intervention after the index procedure were excluded. RESULTS: Arteriovenous fistula angioplasty was done in 28 patients using DCB and in 129 patients using PTA. A total of 108 patients presented with a single stenosis, 42 with 2 stenoses, and 7 with 3 stenoses. The location of these stenoses was in the venous outflow (57%), the juxta anastomotic segment (31%), and cephalic arch (12%). The median time to re-intervention for the PTA was 216 days compared to 304 days for the DCB (p=0.079). Primary patency at 6 months was 60.4% for PTA and 75% for DCB (p=0.141) CONCLUSION: Although DCB angioplasty of treatmentnaïve dysfunctional AVF tends to improve the time to intervention and 6-month primary patency compared to PTA, this difference did not reach statistical significance.

The value of repeating fine-needle aspiration for thyroid nodules.

BACKGROUND: Fine-needle aspiration (FNA) is an invaluable technique used in the evaluation of thyroid nodules. OBJECTIVES: Evaluate the concordance of results for consecutive FNA readings. DESIGN: Retrospective, descriptive. SETTINGS: Two tertiary care centers. METHODS: Demographics were collected along with every FNA result and final pathology results for all patients (aged 9-90 years old) who underwent thyroid surgery from 2010 to 2017. The Bethesda system was used for cytology. Agreement levels were calculated and compared with final pathology. SAMPLE SIZE: Of 1237 initially included, 1134 had at least one FNA performed with results available for review. RESULTS: For the 1134 patients, demographic and clinical data were collection and a comparison was made between the three FNA results; the highest agreement was between FNA 2 and 3 (53.6%); however, the kappa value was consistently low for all comparisons, indicating a poor level of agreement overall. Also, the risk of malignancy was higher in this study than in the 2017 Bethesda system for reporting thyroid cytopathology in FNA cytology categories I and II. CONCLUSION: Repeating FNA biopsies yield different results every time; hence, there is a low level of agreement. The clinical decision should therefore include other important risk factors. Prospective studies could help shed more light on this topic. LIMITATIONS: Retrospective design. CONFLICT OF INTEREST: None.

The incidence and diagnostic relevance of pathological fracture in conventional central chondrosarcoma.

OBJECTIVE: To determine the incidence and diagnostic relevance of pathological fracture in patients with conventional central chondrosarcoma (CC-CS). MATERIALS AND METHODS: Retrospective review of patients with CC-CS diagnosed between January 2007 and December 2019. Data collected included age, sex, skeletal location and the presence of pathological fracture at presentation. Histological tumour grade based on surgical resection or needle biopsy was classified as atypical cartilaginous tumour (ACT)/grade 1 CS (ACT/Gd1 CS), high-grade CS (HG-CS) and dedifferentiated CS (DD-CS). The presence of pathological fracture was correlated with age, skeletal location and tumour grade. RESULTS: Three hundred seventeen patients were included (177 males and 140 females with mean age 55.8 years, range 9-91 years). Mean age of patients without pathological fracture was 54.4 years and those with pathological fracture 62.9 years (p = 0.002). The major long bones were involved in 171 cases, the flat bones in 112 cases, the mobile spine in 7 cases and the small bones of the hands and feet in 27 cases. There were 81 ACT/Gd 1 CS, 168 HGCS and 68 DD-CS. Pathological fracture was evident at presentation in 51 (16.1%) cases, the commonest bones involved being the femur (n = 21; 41.2%), humerus (n = 10; 19.6%) and acetabulum (n = 7; 13.7%). Pathological facture occurred in 7 cases of ACT/Gd 1 CS (13.7%), 23 cases of HGCS (45.1%) and 21 cases of DD-CS (41.2%) (p = 0.001). Following multivariate analysis, both older age and histological grade were independently significant factors. CONCLUSIONS: Pathological fracture was seen in 16.1% of patients with CC-CS. Pathological fractures in the femur, humerus and acetabulum very likely indicate higher tumour grade.

Quality of life in living kidney donors: A single-center experience at the king abdulaziz medical city.

Chronic kidney disease (CKD) results in irreversible decline in renal function, which ultimately progresses to end-stage renal disease (ESRD). Transplantation is the treatment of choice for ESRD, and this is possible only if donor kidneys are available. Several doubts can appear in the minds of donors and among general public regarding the quality of life (QOL) after donation which can affect the willingness to donate. Therefore, we aimed to assess the QOL in living kidney donors in King Abdulaziz Medical City, Riyadh, Saudi Arabia using the kidney disease QOL instrument short form (KDQOL-SF). This was a cross-sectional survey of living kidney donors between 18 and 65 years of age who donated their kidneys between 2008 and 2014 and was conducted in the hepatobiliary and transplantation department of our hospital. The study measured 17 domains in KDQOL-SF. Each domain score is up to 100; the higher the score in each domain, the better the QOL. Data will be entered and analyzed using Statistical Package for the Social Sciences version 21.0. The descriptive statistics will be presented as frequency and percentage for the categorical variables (e.g., gender and income) and the mean ± SD for numerical variables (e.g., QOL score). The study included 60 donors who donated during the study period between 2008 and 2014. Males were 49 (82%) with the age (mean ± standard deviation) as 32 ± 6.5 years. The donors reported an "overall-mean-score" of 86.7 ± 14.6. Four domains had lower scores between 60 and 80: "sleep" (61.8 ± 13.8), "emotional-well-being" (71.6 ± 11.1), "quality-of-social-interaction," and "energy/fatigue." The other 13 domains had scores >80. The two highest domains: "role-physical" (97.9 ± 13.3) and "effect-of-kidney-disease" (97.4 ± 8). Comparing males and females scores, work status was higher in males with P = 0.03. Our findings suggest that donors have a good QOL which may result in more donations. It is important to improve the standard of care for donors to enable them to live their life to the fullest.