Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0022116 (ischemia)
 91,303 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

An unusual case of a malignant carcinoid of the appendix is reported, together with a brief review of the pertinent literature. The case exhibited mesenteric invasion, peritoneal seeding, terminal ileal ischemia and features of the carcinoid syndrome. The radiographic and angiographic documentation are unique in the literature.
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PMID:Malignant carcinoid of the appendix: case report with radiographic and angiographic demonstration. 45 64

In patients with midgut carcinoid tumors a curative, radical tumor removal should be attempted when possible. As these tumors are generally malignant, irrespective of size, the radical surgery implies that intestinal resection for excision of a primary tumor should be combined with an extended mesenteric resection. When the patients present with the carcinoid syndrome the disease is, with few exceptions, too advanced for curative surgery. However, surgery often has to be performed also in patients with the advanced carcinoids. Patients with more extensive disease may thus benefit from surgical debulking of large mesenteric or hepatic metastases. Moreover, when the patients present with abdominal symptoms it is important to exclude a threatening major abdominal complication, such as intestinal obstruction or ischemia. As these complications may cause malnutrition and deterioration, it is important to treat them properly, sometimes by repeated surgery.
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PMID:Abdominal surgery in patients with midgut carcinoid tumors. 185 12

Mesenteric ischemia associated with carcinoid tumors often presents with nonspecific abdominal pain and is usually due to mesenteric branch artery occlusion caused by elastic vascular sclerosis. Mesenteric ischemia was defined by the operative findings of cyanosis or infarction. Eleven patients with intraabdominal metastatic carcinoid tumor were evaluated by angiography. Angiographic narrowing and occlusion of multiple peripheral jejunal and ileal intramesenteric branch arteries was present in 3 patients with mesenteric ischemia, but also occurred in 5 of 8 patients without mesenteric ischemia. Other angiographic abnormalities included staining of the primary tumor (5) or metastases (6), tenting of small mesenteric vessels (5), and occlusion of draining mesenteric veins (2). We conclude that in patients with midgut carcinoid tumors, angiographic narrowing and occlusion of peripheral mesenteric arteries most likely represents elastic vascular sclerosis, is indicative of mesenteric invasion of tumor, but correlates poorly with the presence of ischemia in the subtended bowel. Alternatively, a normal selective arteriogram should exclude mesenteric ischemia as the cause of abnormal pain.
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PMID:Limitations of angiography for mesenteric ischemia caused by midgut carcinoid tumors. 250 47

The use of hepatic artery ligation or permanent dearterialization as the sole procedure for the palliation of patients with malignant hepatic tumors has no proved value. The combination with cytotoxic drug administration via the portal route may offer some advantage. The use of transient dearterialization with one longer ischemic period has been successful in the treatment of metastatic carcinoid disease with carcinoid syndrome but ineffective in the treatment of other hepatic tumors. New knowledge of the effects of transient ischemia on the formation of arterial collaterals and the pathophysiologic mechanisms in cellular injury has led us to further refinement of this therapeutic principle. The first results of repeated short periods of ischemia are promising and give some hope for the future palliation of this group of tumor patients.
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PMID:Status of ischemic therapy for hepatic tumors. 264 21

Hepatic ischemia has been used in the treatment of bilobar malignant carcinoid tumors in the liver. Hepatic artery ligation, hepatic dearterialization, and embolization with nondegradable micromaterial have been followed by collateral formation and are associated with a high complication rate. To reduce this, an implantable vascular occluder permitting intermittent occlusion of the hepatic artery was used in 3 patients with bilateral malignant carcinoid in the liver, with high urinary excretion of 5-hydroxyindoleacetic acid (5-HIAA). Following a thorough dearterialization of the liver and division of all attachments, except for the hepatic artery, portal vein, and common duct, the vascular occluder was placed around the hepatic artery and connected to an implantable subcutaneous port. The hepatic artery was occluded by injecting a few milliliters of saline into the port and flow was released by withdrawal of the same amount of saline. Two patients had an anomalous blood supply to the right lobe and the arterial branch was transposed to the proper hepatic artery. One patient had the hepatic artery regularly occluded for 16 hours at 4-6 week intervals. Two patients managed to do the occlusions by themselves at home for 1 hour twice daily. Two patients had a normalization of the urinary excretion of 5-HIAA after 4 and 9 months. On follow-up with computed tomographic scanning, tumor regression was noted in one, however, there was no change in the other. The third patient has already had a 75% reduction of urinary excretion of 5-HIAA after 2 months of treatment.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Repeated hepatic ischemia as a treatment for carcinoid liver metastases. 274 68

A case of a carcinoid tumor arising in a Meckel's diverticulum is reported. By the time of detection, the tumor had spread to the mesentery causing ischemia of the small intestine due to the associated vascular elastosis.
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PMID:Intestinal ischemia due to vascular elastosis caused by metastasizing carcinoid tumor of Meckel's diverticulum. 405 82

Twenty-six cases of carcinoid-related mesenteric angiopathy and intestinal infarction (three from our institution and 23 previously reported cases) were reviewed. Twenty patients presented with acute abdominal findings, including peritonitis (13 cases), intestinal obstruction (five cases), and bleeding per rectum (two cases). Fifteen patients (75%) experienced antecedent symptoms of abdominal pain and/or diarrhea, averaging 2.5 years in duration. Twelve patients (46%) exhibited symptoms of carcinoid syndrome. Mesenteric angiography in three cases demonstrated encasement and segmental branch narrowing or occlusion of major mesenteric vessels. Eleven patients underwent resection and primary bowel anastomosis with an early survival rate of 91%. Four additional patients who underwent lesser surgical procedures and five patients who did not undergo operation all died. Elastic vascular sclerosis (EVS) was identified in 19 of 22 cases with available histologic material (86%). These changes were observed in proximity to as well as distant to the primary tumor. In general, the severity of EVS did not correlate with the likelihood of gut ischemia. Although not the sole cause of intestinal gangrene in patients with midgut carcinoids, EVS may contribute significantly to the evolution of these ischemic changes.
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PMID:Mesenteric angiopathy, intestinal gangrene, and midgut carcinoids. 728 Oct 10

Surgery is the only potentially curative treatment for patients with carcinoid tumors. Patients with localized disease even with lymph node metastases can be resected for potential cure. Patients with distant metastatic disease have been reported to be cured by resection of all tumor. However, long-term follow-up of these individuals suggests that these patients probably will recur. Debulking surgery, that is removal of part but not all disease, has been advocated by some to decrease symptoms secondary to hormone secretion, relieve intestinal obstruction and ischemia, and prolong survival. Certainly, the first and second indications have been demonstrated by retrospective analysis of patient records. The final indication is less substantiated. It is my opinion that surgery to prolong survival will be beneficial if all gross tumor can be removed. Debulking procedures may improve quality but not quantity of life. Because of the potential benefits of surgery in the management of all patients with carcinoid tumors, a surgeon should be part of the team of physicians who manage these complex patients.
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PMID:Surgical management of carcinoid tumors: role of debulking and surgery for patients with advanced disease. 753 70

Three patients with carcinoid tumors of the ileum are presented; two had severe intestinal ischemia, one with infarction of the small intestine. In all three cases, histopathological examination revealed elastic vascular sclerosis (EVS) in the mesenteric blood vessels. Intestinal ischemia in the presence of a carcinoid tumor is probably due to a combination of tumoral secretion products, vascular changes, mesenterial retraction and nodal involvement. Selective superior mesenteric artery arteriography is diagnostic. All the reported carcinoid tumors with ischemic manifestations are ileal and invaded the mesentery or had positive nodes or metastases; two-thirds had EVS, and one-third mesenterial vascular luminal narrowing. Intestinal ischemia may be the underlying cause of vague symptoms in patients with a carcinoid tumor. This tumor may be small and must be looked for during laparotomy, mild intestinal ischemia or mesenterial thickening are important signs. Early resection can prevent intestinal complications. An aggressive attitude, including debulking of metastases, is justifiable.
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PMID:Ileal carcinoid tumors and intestinal ischemia. 785 61

Both hepatic ischemia and chemotherapy are effective in the treatment of carcinoid liver metastases, but their effectiveness is often limited, partial and transient. It has been shown that, during intermittent occlusion of the hepatic artery with a surgically implanted occluder, no revascularisation from collaterals occurs. We studied the feasibility, the side-effects, the response to tumour measurements and hormonal excretions of a combined treatment of repeated hepatic ischemia and 5-Fluorouracil and Streptozotocin-administration in carcinoid liver metastases.
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PMID:Repeated hepatic ischemia in combination with chemotherapy for liver carcinoid metastases. 826 72


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