Anatomic variants of the subscapular-thoracodorsal arterial system: A radiologic analysis of 200 arterial systems

Normal hepatic arterial anatomy occurs in approximately 50–80% of cases; for the remaining cases, multiple variations have been described. Knowledge of these anomalies is especially important in hepatobiliary and pancreatic surgery in order to avoid unnecessary complications. We describe two cases of patients undergoing pancreatoduodenectomy for abnormalities in the head of the pancreas. Preoperative contrast-enhanced cross-sectional imaging demonstrated relevant, rare hepatic arterial variants: (1) a completely replaced hepatic arterial system with a gastroduodenal artery (GDA) arising directly from the celiac axis and (2) a replaced right hepatic artery originating from the superior mesenteric artery and traveling anterior to the pancreatic uncinate process and head. These findings were confirmed during pancreatoduodenectomy. Both of these variants have been rarely described with an incidence of <1.0%. In the present paper, we describe the hepatic arterial anomalies commonly encountered and clarify the important details associated with these variants as they pertain to pancreatoduodenectomy.

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SMAFS (Superficial Musculoaponeurotic-Fatty System): A Changed SMAS Concept; Anatomic Variants, Modes of Handling, and Clinical Significance in Facelift Surgery

Advanced Surgical Facial Rejuvenation ◽

10.1007/978-3-642-17838-2_5 ◽

2011 ◽

pp. 35-45

Author(s):

Hassan Abbas Khawaja ◽

Melvin A. Shiffman ◽

Enrique Hernández-Pérez

Keyword(s):

Clinical Significance ◽

System A ◽

Anatomic Variants

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Ultrasonic duplex scanning in atherosclerotic disease of the vertebrobasilar arterial system : a non-invasive technique compared with contrast arteriography

10.26481/dis.19850530ra ◽

1985 ◽

Author(s):

R.G.A. Ackerstaff

Keyword(s):

Atherosclerotic Disease ◽

Arterial System ◽

Duplex Scanning ◽

Invasive Technique ◽

Non Invasive ◽

System A

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Embryological development of the human cranio-facial arterial system: a pictorial review

Surgical and Radiologic Anatomy ◽

10.1007/s00276-021-02684-y ◽

2021 ◽

Author(s):

Lorenzo Bertulli ◽

Thomas Robert

Keyword(s):

Comparative Anatomy ◽

Arterial System ◽

Human Embryos ◽

Developmental Phase ◽

Embryological Development ◽

System A ◽

Pictorial Review ◽

Vascular Structures ◽

Almost All ◽

Neurovascular Conflicts

AbstractThe embryological development of the cerebral vasculature is very complex. Historical and also more recent studies based on human embryos, comparative anatomy and cerebral angiographies allowed us to better understand this vasculature development. The knowledge and understanding of such embryological development are important for physicians interested in neurovascular pathologies. Indeed, all vascular variants and almost all vascular pathologies, such as aneurysms, dolichoectasia, atherosclerosis, and neurovascular conflicts could be explained by an alteration during the embryological life. There are also many variants of these vascular structures present in normal developed adults, which are variably associated with pathological entities. Understanding the process which leads to the development of the normal cerebral arterial system in humans is, therefore, very important to have a better knowledge of the possible clinical and surgical implications of these anomalies. In this paper, we review the embryological development of the cranio-facial arterial vasculature from its beginning at approximately days 21–50 of intrauterine life, with pictures illustrating each developmental phase.

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Hepatic Arterial System- A Radioanatomical Analysis With Multidetector Computed Tomography

Annals of International medical and Dental Research ◽

10.21276/aimdr.2018.4.4.at4 ◽

2018 ◽

Vol 4 (4) ◽

Author(s):

Kalyanapanchakshari Poluri ◽

S. K. Agarwal ◽

R. P. Bansal

Keyword(s):

Computed Tomography ◽

Multidetector Computed Tomography ◽

Arterial System ◽

System A

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C-Shaped canal system - A Case report

UNIVERSITY JOURNAL OF DENTAL SCIENCES ◽

10.21276/ujds.2020.6.2.12 ◽

2020 ◽

Vol 6 (2) ◽

pp. 83-85

Author(s):

Rajender Singh Raju ◽

Panna Mangat ◽

Saleem Azhar ◽

Sana

Keyword(s):

Case Report ◽

Root Canal ◽

Continuous Wave ◽

File System ◽

File Systems ◽

Canal System ◽

System A ◽

Anatomic Variants ◽

Root Canal Morphology ◽

Canal Morphology

ABSTRACT C-shaped canals are anatomic variants in root canal morphology. This c-shaped configuration should be diagnosed earliest as it influences the management of such cases more efficiently. They pose challenges in shaping, cleaning and obturating protocols. We require a file system which can contact and shape all possible surfaces of the c-shaped canal. Some of these file systems are XP-endo shaper files (FKG), SAF (ReDent NOVA). For cleaning, advocated systems are XP- endo finisher files (FKG), SAF, ultrasonic files like irrisafe, sonic files (endo-activator), endo-vac system. 3-D obturation should be done wih downpack and backfill technique (warm vertical or continuous wave of compaction)

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Characterization of Antithrombotic Effects of Antiplatelet Drugs and Anticoagulants in Experimental Thrombosis

10.1055/s-0039-1684645 ◽

1979 ◽

Author(s):

R. Zimmermann ◽

C. Zeltsch ◽

L. Zieboll ◽

D. Lange ◽

A. Petri

Keyword(s):

Arterial System ◽

Antiplatelet Drugs ◽

Minor Effect ◽

Experimental Conditions ◽

System A ◽

Antithrombotic Effects ◽

System 2 ◽

Antithrombotic Efficacy ◽

A Minor

Drugs with possible antithrombotic properties have to be investigated in models for inducing experimentalthrombosis. Some of the well known antiplatelet drugs and anticoagulants were studied in the venous (4 models, 370 experiments) and arterial system (2 models,200 experiments). Thrombi were produced by different endothelial lesions, by stasis and hypercoagulability or a combination of these thrombogenic factors. In the venous system heparin reduced the thrombus size in comparison with controls by 98% (significantly, p<0.05 = s), phenprocoumon 91% (s), acetylsalicylic acid (ASA) 30%, ASA and dipyridamole (DIPY) 69%, carbenicillin 54%. In the arterial system a minor effect could be seen: Carbenicillin 72 %(s), ASA and DIPY 36%, ASA 8%, heparin 52%, phenprocoumon 17 %. Dependent on the experimental conditions ASA may demonstrate venous thrombus size reductions by 0, 6 or 30% and heparin by 33,98,81,68 or 88%, respectively. Comment: A drug may demonstrate an effect in one model but not necessarily in another one. The antithrombotic efficacy of new substances has to be investigated in models characterized by their thrombogenic conditions and thrombus structure and compared with that of well known antithrombotic substances.

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