The three-dimensional architecture of the elastic-fiber network in canine hepatic portal system

1984 ◽  
Vol 171 (4) ◽  
pp. 401-413 ◽  
Author(s):  
Robert S. Crissman ◽  
William Guilford
Keyword(s):  
Elastic Fiber ◽  
Three Dimensional ◽  
Portal System ◽  
Fiber Network ◽  
Hepatic Portal System ◽  
Hepatic Portal

An examination of the skin phase of schistosome migration using a hamster cheek pouch preparation

Parasitology ◽  
1980 ◽  
Vol 80 (2) ◽  
pp. 257-266 ◽  
Author(s):  
R. A. Wilson ◽  
J. Ruth Lawson
Keyword(s):  
Cheek Pouch ◽  
Surrounding Tissue ◽  
Portal System ◽  
Hamster Cheek Pouch ◽  
Post Exposure ◽  
Hepatic Portal System ◽  
65 H ◽  
The Mean ◽  
Hepatic Portal ◽  
Mean Time

SummaryA living hamster cheek pouch preparation has been used to study the skin phase of schistosomulum migration. Between 0 and 16 h post-exposure schistosomula become increasingly difficult to see and lateral movement in the skin ceases. Up to 50 h post-exposure they remain poorly visible. They lie in fluid-filled lacunae within the epidermis, external to the basement membrane. The first schistosomula enter the dermis from. 40 h post-exposure, approximately half having done so by 52·5 h. Coincidentally, they can be more easily distinguished from surrounding tissue. Up to 91% of original penetrants have been observed alive in. pouch tissue at 65 h post-exposure. Since only 26% eventually mature in the hepatic portal system there would appear to be considerable attrition subsequent to the skin phase of migration. The mean diameter of venules penetrated was 22·7 μm and the mean time taken to penetrate was 8·01 h. The majority of schistosomula left the pouch between 60 and 80 h post-exposure.

Occurrence and distribution of valves in the canine hepatic portal system

1988 ◽  
Vol 1 (1) ◽  
pp. 43-52 ◽  
Author(s):  
David L. Dawson ◽  
Carol E. H. Scott-Conner ◽  
Manuel E. Molina
Keyword(s):  
Portal System ◽  
Hepatic Portal System ◽  
Hepatic Portal

Automated anatomical labeling of abdominal arteries and hepatic portal system extracted from abdominal CT volumes

2015 ◽  
Vol 20 (1) ◽  
pp. 152-161 ◽  
Author(s):  
Tetsuro Matsuzaki ◽  
Masahiro Oda ◽  
Takayuki Kitasaka ◽  
Yuichiro Hayashi ◽  
Kazunari Misawa ◽  
...  
Keyword(s):  
Portal System ◽  
Abdominal Ct ◽  
Hepatic Portal System ◽  
Abdominal Arteries ◽  
Hepatic Portal

scholarly journals Genital Schistosomiasis: A Report on Two Cases of Ovarian Carcinomas Containing Viable Eggs ofSchistosoma mansoni

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Andressa Gonçalves Amorim ◽  
Fernanda Alves Barbosa Pagio ◽  
Rodrigo Neves Ferreira ◽  
Antônio Chambô Filho
Keyword(s):  
Schistosoma Mansoni ◽  
Benign Lesion ◽  
Parasitic Infection ◽  
Pelvic Mass ◽  
Abdominal Distension ◽  
Portal System ◽  
Serous Carcinoma ◽  
Ovarian Carcinomas ◽  
Hepatic Portal System ◽  
Hepatic Portal

Schistosomiasis is a parasitic infection that is highly prevalent worldwide, with a variety of species being responsible for causing the disease. In Brazil, however, the only identified species isSchistosoma mansoni. The adult parasites inhabit the blood vessels of the hepatic portal system of the main host. The disease may range from being asymptomatic to provoking liver damage or portal hypertension. Furthermore, ectopic schistosomiasis may develop, and several hypotheses have been raised to explain the occurrence of the disease. This paper describes two cases, one in a 39-year-old woman and the other in a 47-year-old woman. Both had similar symptoms of pain and abdominal distension caused by a large abdominal/pelvic mass. Histopathology of the ovary showed a mucinous cystadenocarcinoma of the intestinal type in the first patient and a papillary serous carcinoma in the second, with both tumors containing viable eggs ofSchistosoma mansoni. The neoplasms probably serve as a migratory route for the adult parasites and the embolization of eggs. Nevertheless, there is insufficient evidence to confirm the malignization of a benign lesion due to the presence ofSchistosoma mansoni. Few cases have been reported in the international literature on the association between ovarian schistosomiasis and neoplasms.

scholarly journals Morphological studies of the canine hepatic portal system

2018 ◽  
Vol 21 (4) ◽  
pp. 406-419
Author(s):  
G. Georgiev ◽  
I. Raychev ◽  
N. Mehandzhiyski ◽  
L. Hristakiev ◽  
G. Georgiev ◽  
...  
Keyword(s):  
Portal System ◽  
Morphological Studies ◽  
Hepatic Portal System ◽  
Hepatic Portal

scholarly journals POLIESPLENIA E ANOMALIA DO SISTEMA PORTAL HEPÁTICO ASSOCIADAS À AUSÊNCIA DE VEIA CAVA INFERIOR EM CRIANÇA: RELATO DE CASO

2021 ◽  
Vol 12 (3) ◽  
pp. 102-105
Author(s):  
Lucas Cavalcanti dos Santos ◽  
Eloisa Nascimento Jorge ◽  
Luciana Alvares Calvo ◽  
Janilson de Souza Cavalcante
Keyword(s):  
Inferior Vena Cava ◽  
Inferior Vena ◽  
Vena Cava ◽  
Azygos Vein ◽  
Abdominal Ultrasound ◽  
Portal System ◽  
Vein Thrombosis ◽  
Cardiovascular Malformation ◽  
Hepatic Portal System ◽  
Hepatic Portal

Agenesis of inferior vena cava (IVC)is a rare cardiovascular malformation that occurs between the sixth and tenth week of embryogenesis. It may be associated with cardiac and abdominal malformations, besidescomplications such as deep vein thrombosis (DVT). The present study reports the case of a patient randomly diagnosed with total IVC agenesis associated with malformation of the portohepatic system and polysplenia. Female patient, 9 years old, being monitored for hemorrhagic dengue, withcomputed tomographyand abdominal ultrasound revealing anomaly of the development of the hepatic portal system associated with the absence of inferior vena cava with continuation inretrocrural azygos vein, in addition to multiple accessory spleens. When the anastomoses of the IVCprimitive veins are not formed properly, partial or total agenesis of this vessel may occur. Consequently, the blood is diverted to the retrocrural azygos. Identification of these malformations is important for the patients receive proper guidance about DVT prevention, in additionto monitoring them for diagnosis of other possible malformations.

Bacterial, fungal, and parasitic infections of the liver

2011 ◽  
Author(s):  
R. Mark Beattie ◽  
Anil Dhawan ◽  
John W.L. Puntis
Keyword(s):  
Fungal Infections ◽  
Biliary Tree ◽  
Liver Parenchyma ◽  
Systemic Circulation ◽  
Portal System ◽  
Parasitic Infections ◽  
Direct Invasion ◽  
Rickettsial Infections ◽  
Hepatic Portal System ◽  
Hepatic Portal

Bacterial sepsis 428Spirochaetal infections 431Rickettsial infections 432Fungal infections 432Parasitic infections 434Granulomatous hepatitis 437Infectious agents can affect the liver either via direct invasion or by release of toxins. The liver's dual blood supply renders it uniquely susceptible to infection, receiving blood from the intestinal tract via the hepatic portal system, and from the systemic circulation via the hepatic artery. Because of this unique perfusion, the liver is frequently exposed to systemic or intestinal infections or the mediators of toxaemia. The biliary tree provides a further conduit for gut bacteria or parasites to access the liver parenchyma....

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