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Annales de Pathologie Dec 2016The idiopathic myointimal hyperplasia of mesenteric veins is a rare pathology, affecting recto-sigmoid and mimicking clinically an inflammatory chronic disease of the... (Review)
Review
The idiopathic myointimal hyperplasia of mesenteric veins is a rare pathology, affecting recto-sigmoid and mimicking clinically an inflammatory chronic disease of the bowel. Only about fifteen cases have been reported in the literature. This lesion is characterized by a myointimal thickening of the mesenteric veins, without inflammatory infiltrate of the vascular wall, differentiating it from vasculitis. We present here the case of a 48-year-old man, in whom the diagnosis of ulcerative colitis then digestive vasculitis had first been raised.
Topics: Colitis, Ulcerative; Diagnosis, Differential; Humans; Hyperplasia; Male; Mesenteric Veins; Middle Aged; Tunica Intima; Vasculitis
PubMed: 27838074
DOI: 10.1016/j.annpat.2016.09.002 -
Khirurgiia 2017
Review
Topics: Digestive System Surgical Procedures; Humans; Mesenteric Ischemia; Mesenteric Vascular Occlusion; Mesenteric Veins; Time-to-Treatment; Treatment Outcome; Vascular Surgical Procedures; Venous Thrombosis
PubMed: 28745711
DOI: 10.17116/hirurgia2017765-68 -
Abdominal Radiology (New York) Feb 2024The purpose of this study is to determine computed tomography (CT) findings that aid in differentiating idiopathic myointimal hyperplasia of mesenteric veins (IMHMV)...
PURPOSE
The purpose of this study is to determine computed tomography (CT) findings that aid in differentiating idiopathic myointimal hyperplasia of mesenteric veins (IMHMV) from other colitides.
METHODS
Retrospective review of histiologic proven cases of IMHMV (n = 12) with contrast enhanced CT (n = 11) and/or computed tomography angiography (CTA) (n = 9) exams. Control groups comprised of CT of infectious colitis (n = 13), CT of inflammatory bowel disease (IBD) (n = 12), and CTA of other colitides (n = 13). CT exams reviewed by 2 blinded gastrointestinal radiologists for maximum bowel wall thickness, enhancement pattern, decreased bowel wall enhancement, submucosal attenuation value, presence and location of IMV occlusion, peripheral mesenteric venous occlusion, dilated pericolonic veins, subjective IMA dilation, maximum IMA diameter, maximum peripheral IMA branch diameter, ascites, and mesenteric edema. Presence of early filling veins was an additional finding evaluated on CTA exams.
RESULTS
Statistically significant CT findings of IMHMV compared to control groups included greater maximum bowel wall thickness, decreased bowel enhancement, IMV occlusion, and peripheral mesenteric venous occlusion (p < 0.05). Dilated pericolonic veins were seen more frequently in IMHMV compared to the infectious colitis group (64% versus 15%, p = 0.02). Additional statistically significant finding on CTA included early filling veins in IMHMV compared to the CTA control group (100% versus 46%, p = 0.008).
CONCLUSION
IMHMV is a rare chronic non-thrombotic ischemia predominantly involving the rectosigmoid colon. CT features that may aid in differentiating IMHMV from other causes of left-sided colitis include marked bowel wall thickening with decreased enhancement, IMV and peripheral mesenteric venous occlusion or tapering, and early filling of dilated veins on CTA.
Topics: Humans; Hyperplasia; Mesenteric Veins; Colitis; Tomography, X-Ray Computed; Vascular Diseases
PubMed: 38127281
DOI: 10.1007/s00261-023-04129-z -
Clinical Imaging 2016Idiopathic myointimal hyperplasia of mesenteric veins (IMHMV) is a rare condition of the rectosigmoid colon that primarily affects middle-aged men. IMHMV typically... (Review)
Review
Idiopathic myointimal hyperplasia of mesenteric veins (IMHMV) is a rare condition of the rectosigmoid colon that primarily affects middle-aged men. IMHMV typically presents as proctosigmoiditis and often requires surgical resection due to complications throughout the protracted clinical course. It can be differentiated from idiopathic chronic inflammatory bowel disease by histopathologic examination of surgically resected colon specimens. This report describes a rare case of IMHMV presenting as left hemicolitis in a 64-year-old male. We also describe potentially distinguishing computed tomographic and angiographic findings that may aid in the diagnosis of IMHMV.
Topics: Angiography; Colon; Contrast Media; Diagnosis, Differential; Humans; Hyperplasia; Male; Mesenteric Veins; Middle Aged; Radiographic Image Enhancement; Tomography, X-Ray Computed; Vascular Diseases
PubMed: 27179160
DOI: 10.1016/j.clinimag.2015.12.017 -
Vascular and Endovascular Surgery Jan 2022Traumatic injuries to the mesenteric vessels are rare and often lethal. Visceral vessels, such as the superior mesenteric artery (SMA) and vein (SMV), supply blood to... (Review)
Review
Traumatic injuries to the mesenteric vessels are rare and often lethal. Visceral vessels, such as the superior mesenteric artery (SMA) and vein (SMV), supply blood to the small and large bowel by a rich system of collaterals. Because fewer than 100 such injuries have been described in the literature, they pose challenges in both diagnosis and management and can unfortunately result in high mortality rates. Prompt diagnosis, surgical intervention, and resuscitation can lead to improved outcomes. Here, we review the literature surrounding traumatic injuries of the SMA/SMV and discuss management strategies.
Topics: Abdomen; Humans; Mesenteric Artery, Superior; Mesenteric Veins; Treatment Outcome; Vascular System Injuries
PubMed: 34533371
DOI: 10.1177/15385744211042491 -
Der Radiologe May 2009This article focuses on the percutaneous treatment options of venous thromboses and occlusions. Interventional therapy modalities for mediastinal, brachial, axillar,... (Review)
Review
This article focuses on the percutaneous treatment options of venous thromboses and occlusions. Interventional therapy modalities for mediastinal, brachial, axillar, cerebral, and mesenteric thromboses are reviewed. Stenoses of the superior vena cava are most often caused by mediastinal malignomas. Balloon angioplasty together with stent implantation is an effective method for revascularisation in cases of upper venous congestion. Benign central venous stenoses are common in dialysis patients for whom interventional therapy using balloon angioplasty has proven excellent results. In the treatment of insufficient dialysis access, percutaneous techniques represent the first-choice option. Regarding cerebral and mesenteric thrombosis, interventional therapy is restricted to selected individual cases.
Topics: Humans; Mesenteric Veins; Vascular Surgical Procedures; Venous Thromboembolism
PubMed: 18846360
DOI: 10.1007/s00117-008-1750-6 -
Journal of Gastrointestinal Surgery :... Jan 2005
Topics: Dissection; Humans; Mesenteric Veins; Pancreaticoduodenectomy; Plastic Surgery Procedures; Stents; Suture Techniques
PubMed: 15623455
DOI: 10.1016/j.gassur.2004.01.004 -
European Journal of Surgical Oncology :... Oct 2023Few studies have evaluated variations of the main trunk of the superior mesenteric vessels. Particularly, the double superior mesenteric vein (DSMV) has not been... (Observational Study)
Observational Study
INTRODUCTION
Few studies have evaluated variations of the main trunk of the superior mesenteric vessels. Particularly, the double superior mesenteric vein (DSMV) has not been described in detail. This study aimed to establish the definition, anatomical characteristics, and underlying clinical significance of the DSMV.
MATERIALS AND METHODS
A total of 115 patients with colorectal cancer were included in this retrospective study between March 2020 and March 2022. The anatomical characteristics were analyzed using computed tomography, three-dimensional image reconstructions, and surgical videos.
RESULTS
Among the patients enrolled, 22 (19.1%) had DSMVs. The median diameters of the right and left superior mesenteric veins were similar. The superior mesenteric artery was sandwiched between the right and the left superior mesenteric veins. The left superior mesenteric vein mainly crossed the ventral side of the superior mesenteric artery (63.6%). In 1 case, the right superior mesenteric vein was mistakenly resected intraoperatively. The DSMV was classified into types I and II based on whether the right and left trunks formed a common trunk; it was further classified into subtypes a and b based on the colonic vein confluence. The proportions of type I-a, I-b, II-a, and II-b were 4.5%, 27.3%, 9.1%, and 59.1%, respectively. The middle colic veins drained into the left superior mesenteric vein in 19 cases (86.4%).
CONCLUSIONS
The DSMV is more common than previously thought. For the first time, the definition and four types of the DSMV were proposed. The presence of a DSMV should be considered during right hemicolectomies.
Topics: Humans; Mesenteric Veins; Colonic Neoplasms; Retrospective Studies; Imaging, Three-Dimensional; Colectomy; Mesenteric Artery, Superior; Tomography
PubMed: 37455181
DOI: 10.1016/j.ejso.2023.06.024 -
AJR. American Journal of Roentgenology May 1997The purpose of this study was to describe the variable anatomy of mesenteric veins on axial CT images and on volume-rendered CT venograms that use maximum intensity...
OBJECTIVE
The purpose of this study was to describe the variable anatomy of mesenteric veins on axial CT images and on volume-rendered CT venograms that use maximum intensity projection and shaded-surface display.
SUBJECTS AND METHODS
Fifty-seven patients undergoing helical CT of the pancreas were included in the study. The mesenteric venous system was analyzed in 54 patients. Three patients were excluded because the helical CT data were unsatisfactory.
RESULTS
On helical CT with maximum intensity projection and shaded-surface display, the superior mesenteric vein (SMV) was seen as a single trunk of variable length in 40 patients. In seven other patients, two mesenteric trunks merged separately with the splenic vein. In the remaining seven patients, the SMV was occluded by tumor. The inferior mesenteric vein drained into the splenic vein in 28 patients (56%), into the SMV in 14 patients (26%), and into the splenomesenteric angle in nine patients (18%).
CONCLUSION
Both axial and volume-rendered CT venograms accurately reveal the variable mesenteric venous anatomy. CT venograms may replace conventional angiography in presurgical planning.
Topics: Female; Humans; Image Processing, Computer-Assisted; Male; Mesenteric Veins; Middle Aged; Pancreas; Pancreatic Diseases; Pancreatic Neoplasms; Phlebography; Splenic Vein; Tomography, X-Ray Computed
PubMed: 9129413
DOI: 10.2214/ajr.168.5.9129413 -
The Journal of Pharmacology and... Jan 2004These studies examined adrenergic reactivity of mesenteric arteries and veins from deoxycorticosterone acetate-salt (DOCA-salt) hypertensive and sham control mice. We...
Increased reactivity of murine mesenteric veins to adrenergic agonists: functional evidence supporting increased alpha1-adrenoceptor reserve in veins compared with arteries.
These studies examined adrenergic reactivity of mesenteric arteries and veins from deoxycorticosterone acetate-salt (DOCA-salt) hypertensive and sham control mice. We measured constrictions in unpressurized arteries and veins by monitoring vessel diameter using computer-assisted video micros-copy in vitro. Veins were more sensitive than arteries to the constricting effects of norepinephrine (NE) and phenylephrine (PE), but the alpha2-agonists clonidine and UK 14,304 [5-bromo-6-(2-imidazolin-2-yl-amino)-quinoxaline] did not constrict arteries or veins. Reactivity was not altered in arteries or veins from DOCA-salt mice. We next investigated the mechanism of increased venous reactivity to NE and PE by studying desensitization to maximum concentrations of NE and PE. Sham arteries desensitized to NE and PE more than DOCA-salt arteries, whereas DOCA-salt and sham veins maintained 80% of the initial NE and PE constriction. To determine whether the increased reactivity and resistance to desensitization in veins was due to a greater alpha-adrenoceptor reserve, vessels were incubated with the alkylating agent phenoxybenzamine (PBZ; 0.3, 3, 10, and 30 nM). The NE-elicited initial constriction was reduced by PBZ (3, 10, and 30 nM) in sham but only by PBZ (30 nM) in DOCA-salt veins. All doses of PBZ blocked NE responses in sham and DOCA-salt arteries. These data suggest that mesenteric veins express more alpha1-adrenoceptors than arteries, accounting for greater reactivity and resistance to desensitization compared with arteries.
Topics: Adrenergic Agonists; Alkylation; Animals; Arteries; Male; Mesenteric Veins; Mice; Mice, Inbred C57BL; Phenoxybenzamine; Receptors, Adrenergic, alpha-1; Vasoconstriction
PubMed: 14593081
DOI: 10.1124/jpet.103.056184