scholarly journals Variant Anatomy of the Nasal Turbinates in Adult Nigerians

2021 ◽  
Vol 4 (2) ◽  
pp. 36-40
Author(s):  
Beryl Shitandi Ominde ◽  
◽  
Joyce Ikubor ◽  
Wilson Iju ◽  
Okolugbo Nekwu ◽  
...  
Keyword(s):  
Variant Anatomy

Transcatheter Chemoembolization of a Hepatocellular Carcinoma Utilizing Lipiodol through the Pancreaticoduodenal Arcade: A Case Report

2018 ◽  
Vol 2 ◽  
pp. 5
Author(s):  
Scott P Patterson ◽  
Richard G Foster
Keyword(s):  
Hepatocellular Carcinoma ◽  
Case Report ◽  
Vascular Anatomy ◽  
Left Gastric Artery ◽  
Target Lesion ◽  
Celiac Artery ◽  
Small Hepatocellular Carcinoma ◽  
Gastric Artery ◽  
Variant Anatomy ◽  
Pancreaticoduodenal Arcade

This case report describes the chemoembolization of a small hepatocellular carcinoma employing a lipiodol drug delivery system utilizing a novel arterial pathway. Because the target lesion was precariously located adjacent to the inferior heart border and the diaphragm, it was unsuitable for imaging-guided microwave ablation. To achieve chemoembolization, several intraprocedural adaptations were necessary, given the variant anatomy encountered and difficulty accessing the left gastric artery through a celiac artery approach. The left gastric artery was selected from a superior mesenteric artery approach through the pancreaticoduodenal arcade (Rio Branco’s arcade). This case illustrates the importance of a mastery of the vascular anatomy and variants of hepatic arterial flow.

scholarly journals Percutaneous Transhepatic Laser Lithotripsy for Biliary Stones in Patients with Altered Biliary Anatomy

2021 ◽  
Author(s):  
Jacob Indu ◽  
Vikrama Amitha Kheda ◽  
Deepak Bolbandi ◽  
Sanjay Govil ◽  
Ravisankar Bhat
Keyword(s):  
Bile Duct ◽  
Current Treatment ◽  
Laser Lithotripsy ◽  
Safe Procedure ◽  
Bile Duct Stones ◽  
Biliary Stones ◽  
Endoscopic Retrograde ◽  
Difficult Cases ◽  
Transhepatic Biliary Drainage ◽  
Variant Anatomy

AbstractEndoscopic retrograde cholangiopancreatography (ERCP) is the current treatment of choice in bile duct stones. Several factors such as variant anatomy of ampulla and surgical procedures like hepaticojejunostomy limit the success of ERCP in treating bile duct stones. Percutaneous transhepatic laser lithotripsy using interventional radiologic and endourologic techniques, which is uncommon, is a reasonable treatment option in such difficult cases. It is a minimally invasive, safe procedure accompanied by a high success rate, minimal morbidity, and a short hospital stay. We report our technique and experience in a series of three patients who underwent percutaneous transhepatic biliary drainage (PTBD) followed by percutaneous transhepatic laser lithotripsy in an attempt to avoid open surgery when ERCP was technically difficult.

Normal and variant anatomy of the dural venous sinuses

1994 ◽  
Vol 15 (6) ◽  
pp. 499-519 ◽  
Author(s):  
Joel K. Curé ◽  
Pamela Van Tassel ◽  
M. Timothy Smith
Keyword(s):  
Venous Sinuses ◽  
Variant Anatomy ◽  
Dural Venous Sinuses

scholarly journals Anatomic variants of pulmonary venous drainage and their relation to recurrences of atrial fibrillation after pulmonary vein isolation

2021 ◽  
Vol 27 (3) ◽  
pp. 55-68
Author(s):  
Svetla Dineva ◽  
Milko Stoyanov ◽  
Aneliya Partenova ◽  
Boyan Kunev ◽  
Victoria Stoyanova ◽  
...  
Keyword(s):  
Pulmonary Vein ◽  
Pulmonary Vein Isolation ◽  
Local Population ◽  
Venous Drainage ◽  
Anatomical Variant ◽  
Cox Regression Analysis ◽  
Anatomical Variants ◽  
The Impact ◽  
Variant Anatomy ◽  
Af Recurrence

Anatomical variants of pulmonary venous drainage in the left atrium are often found. Divergent results have been reported on the impact of variant anatomy on atrial fi brillation (AF) recurrence after catheter ablation. We aimed to study the frequency of different anatomical variants of pulmonary venous drainage and their relationship with documented recurrences of AF after ablation. Material and methods: A retrospective study of patients with AF in whom radiofrequency pulmonary vein isolation was done after previously performed cardiac contrast-enhanced multidetector computed tomography. Clinical and procedural characteristics, type and frequency of anatomical variants of the veno-atrial junction and their association with AF recurrences were studied. Results: One hundred seventy-seven patients (112 men, 63.3%) with AF were studied, of which 148 (83.6%) with paroxysmal AF. Variant anatomy was found in 91 patients (51.4%). In 20.9% there was a common left trunk, in 23.2% – more or less than two right-sided veins, and in 7.3% – variations for both right and left veins. No differences in clinical and procedural characteristics were found between the groups with normal and variant anatomy. Recurrences of AF and their association with pulmonary venous anatomy were studied in 104 patients with follow-up ≥ 3 months. No signifi cant relation was found between the presence of variant anatomy and AF recurrences within the blinding period after ablation, OR = 0.864, 95% CI = 0.397 – 1.88, p = 0.843, nor afterwards, OR = 1.12, 95% CI = 0.5 – 2.5, p = 0.839. Cox regression analysis showed no differences in AF recurrence-free survival regardless of the anatomical variant of pulmonary venous drainage, HR = 1.09, 95% CI = 0.58 – 2.05, p = 0.779. Conclusion: In this local population of patients with AF, the incidence of variant pulmonary venous drainage is just over 50%. No association was found between variant anatomy and the rate of AF recurrences after fi rst pulmonary vein isolation.

scholarly journals Variant Anatomy of Hypoglossal Canal: An Osteological Study in North Indian Population

2020 ◽  
Vol 6 (1) ◽  
pp. 40-42
Author(s):  
Yadav S ◽  
Pandey P ◽  
Pasricha N ◽  
Bhatnagar R
Keyword(s):  
Clinical Relevance ◽  
Indian Population ◽  
North Indian Population ◽  
Hypoglossal Canal ◽  
Posterior Condylar ◽  
Human Skulls ◽  
The Right ◽  
Variant Anatomy

Introduction: To assess the presence of duplicated hypoglossal canal. Subjects and Methods: A total of 80 dried human skulls were collected from the Anthropology lab of the department of Anatomy K.G.M.U.,U. P., Lucknow, India. The skulls were examined for duplicated hypoglossal canal and presence of posterior condylar canal. Theskulls were closely inspected with the use of hand lens. Results: We observed bilateral duplicated hypoglossal canal in 3 skulls (3.75%), Unilateral duplication was seen in 15 skulls (18.75%) [i.e.7 on the right side and 8 on the left side]. We observed that the presence of duplicated hypoglossal canal was mostly associated with the presence of posterior condylar canal. Conclusion: Duplicated hypoglossal canal in humans may result in minor degrees of alterations in the movements of the tongue due to entrapment of nerve during ossification. The clinical relevance of this knowledge is important for radiologists and neurosurgeons.

scholarly journals Proximal Extrahepatic Bile Ducts: Comprehensive Review

2021 ◽  
Vol 4 (1) ◽  
pp. 74-93
Author(s):  
M. A. Shorikov ◽  
O. N. Sergeeva ◽  
M. G. Lapteva ◽  
N. A. Peregudov ◽  
B. I. Dolgushin
Keyword(s):  
Bile Duct ◽  
Bile Flow ◽  
Bile Ducts ◽  
Extrahepatic Bile Duct ◽  
Hepatic Duct ◽  
Biliary Tree ◽  
Comprehensive Review ◽  
Extrahepatic Bile Ducts ◽  
And Function ◽  
Variant Anatomy

Proximal extrahepatic bile ducts are the biliary tree segment within formal boundaries from cystic ductcommon hepatic duct junction to sectoral hepatic ducts. Despite being a focus of attention of diagnostic and interventional radiologists, endoscopists, hepatobiliary surgeons and transplantologists they weren’t comprehensively described in available papers. The majority of the authors regard bile duct confluence as a group of merging primitively arranged tubes providing bile flow. The information on the proximal extrahepatic bile duct embryonal development, variant anatomy, innervation, arterial, venous and lymphatic supply is too general and not detailed. The present review brought together and systemized exiting to the date data on anatomy and function of this biliary tract portion. Unique, different from the majority of hollow organs organization of the proximal extrahepatic bile duct adapts them to the flow of the bile, i.e. viscous aggressive due to pH about 8.0 and detergents fluid, under higher wall pressure than in other parts of biliary tree. 

scholarly journals Variant Anatomy of the Renal Arteries: a Computed Tomography Angiography Study

2020 ◽  
Vol 9 (1) ◽  
pp. 43-48
Author(s):  
A. V. Kolsanov ◽  
A. K. Nazaryan ◽  
A. S. Voronin ◽  
O. A. Gelashvili
Keyword(s):  
Computed Tomography ◽  
Clinical Practice ◽  
Renal Artery ◽  
Computed Tomography Angiography ◽  
Three Dimensional ◽  
Renal Arteries ◽  
Software Complex ◽  
Three Dimensional Modeling ◽  
Dimensional Modeling ◽  
Variant Anatomy

The article discusses variant anatomy of the renal arteries, potentials of three-dimensional modeling and use of these data in clinical practice. Despite a large number of studies based on both morphological and clinical approaches there is no general consensus regarding options for dividing the renal artery, the number of its branches, their topolocalization. This is due to the fact that most of the research studies are based on cadaveric material, fixed and unfixed. It is difficult to apply these data to explain medical conditions and pathologies of particular patients. Computed tomography allows performing in vivo investigation of various morphometric parameters of the renal arteries, and these findings can subsequently be used in disease diagnostics and treatment.The aim of the study was to identify patterns of topography, linear dimensions and variant anatomy of the human renal arteries based on computed tomography angiography (CTA) with three-dimensional modeling, and to apply CTA findings in clinical practice.Material and methods. The study included CTA images of the abdomen of 130 patients, and their threedimensional models. A hardware-software complex "Luch-S" and software complex "Avtoplan" (Russian project) were used to perform morphometric analysis. The diameter of the renal artery mouth, the level of origin of the renal artery mouths, as well as the angles between the renal arteries and the abdominal aorta were analyzed morphometrically and statistically.Results. The authors have developed recommendations how to use three-dimensional modeling of vascular- organ complexes in patients at the stage of preoperative planning and intraoperative navigation in clinical practice. Generated dataset of personalized morphometric data can be applied to teach basic operation techniques involving possible damage to abnormal vessels, as well as training specific surgical procedures involving the kidney and its vessels in a simulation-based surgical clinic.

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