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Query: UMLS:C0027627 (metastases)
 103,950 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Carcinoid tumors are neuroendocrine tumors with a very unpredictable clinical behavior. In the setting of hepatic metastases, the tumor's release of bioactive substances into the systemic circulation results in carcinoid syndrome: a constellation of symptoms among which cutaneous flushing, gastrointestinal hypermotility, and cardiac involvement are the most prominent. Cardiac manifestations, also known as carcinoid heart disease, are secondary to a severe fibrotic reaction which frequently involves the right-sided valves and may extend towards the subvalvular apparatus leading to valve thickening and retraction. Left-sided involvement is rare and mostly observed in the presence of an interatrial shunt, endobronchial tumor localization, and high tumor activity. Echocardiographic techniques often reveal noncoaptation of the valves, which are fixed in a semiopen position. In patients with advanced lesions and severe valvular dysfunction, surgery is currently the only definitive treatment to potentially improve quality of life and provide survival benefit. Although cardiac surgery has been traditionally reserved for those patients with symptomatic right ventricular failure, a significant trend towards improved surgical outcomes has triggered a more liberal referral for valve replacement. Carcinoid heart disease poses two distinct challenges for the anesthesiologist: carcinoid crisis and low cardiac output syndrome secondary to right ventricular failure. Carcinoid crisis, characterized by flushing, hypotension, and bronchospasm, may be precipitated by catecholamines and histamine releasing drugs used routinely in patients undergoing valve surgery. Although a broader utilization of octreotide have significantly simplified the anesthetic and perioperative management of these patients, a very balanced anesthetic technique is required to identify and manage low cardiac output syndrome.
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PMID:Current concepts in diagnosis and perioperative management of carcinoid heart disease. 2317 18

Ileal neuroendocrine tumors (NETs) often progress slowly, but because of their generally nonspecific symptoms, they have often metastasized to local lymph nodes and to the liver by the time the patient presents. Biochemically, most of these patients have increased levels of whole blood serotonin, urinary 5-hydroxyindoleacetic acid, and chromogranin A. Imaging work-up generally comprises computed tomography or magnetic resonance imaging and somatostatin receptor scintigraphy, or in recent years positron emission tomography with 68Ga-labeled somatostatin analogs, allowing for detection of even sub-cm lesions. Carcinoid heart disease with affected leaflets, mainly to the right side of the heart, is a well-known complication and patients routinely undergo echocardiography to diagnose and monitor this. Multitasking surgery is currently recognized as first-line treatment for ileal NETs with metastases and carcinoid heart disease. Open heart surgery and valve replacement are advocated in patients with valvular disease and progressive heart failure. When valvulopathy in the tricuspid valve results in right-sided heart failure, a sequential approach, performing valve replacement first before intra-abdominal tumor-reductive procedures are conducted, reduces the risk of bleeding. Metastases to the myocardium from ileal NETs are seen in <1-4.3% of patients, depending partly on the imaging technique used, and are generally discovered in those affected with widespread disease. Systemic treatment with somatostatin analogs, and sometimes alpha interferon, is first-line medical therapy in metastatic disease to relieve hormonal symptoms and stabilize the tumor. This treatment is also indicated when heart metastases are detected, with the addition of diuretics and fluid restriction in cases of heart failure. Myocardial metastases are rarely treated by surgical resection.
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PMID:Ileal neuroendocrine tumors and heart: not only valvular consequences. 2531 77

Carcinoid heart disease (CHD) commonly occurs in association with primary gastrointestinal tract carcinoid tumors with hepatic metastases. Unlike primary gastrointestinal tract carcinoid tumors, primary ovarian carcinoid tumors may cause CHD without hepatic metastases, accounting for only 0.3 % of all carcinoid tumors. Only 37 cases of CHD from primary ovarian carcinoid tumors have been reported. We present a case of CHD in which tricuspid valve thickening and shortening led to reduced valve mobility with the resulting severe tricuspid regurgitation. Considering these characteristics of an abnormal tricuspid valve, we suspected CHD, but prosthetic valve replacement was performed without sufficient systemic examination before surgery. Two years after valve replacement, the patient underwent excision of a mass in the lower abdomen, which was diagnosed as an ovarian carcinoid tumor by histopathological examination. The patient has been observed for more than 3 years after tricuspid valve replacement. She has not experienced bioprosthetic valve leaflet degeneration or dysfunction, although it has been reported that bioprosthetic valves may degenerate in patients with carcinoid tumors. Sufficient systemic examinations should be performed to explore the cause of disease.
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PMID:Bioprosthetic tricuspid valve replacement in carcinoid heart disease from primary ovarian carcinoid tumor. 2657 93

Carcinoid heart disease is classically described as right-sided valvular pathology. Solid cardiac metastases from carcinoid tumors are seldom reported. A multimodality imaging approach is needed to diagnose and localize this disease. Biopsy remains the gold standard to confirm the diagnosis of carcinoid. Octreotide uptake is characteristic of carcinoid tumor but not myxoma; thus, an indium-111 octreotide scan is very specific for the diagnosis of carcinoid tumor and helps in assessing the extent of carcinoid disease. We present a case in which an indium-111 octreotide scan revealed uptake in three distinct masses in the colon, liver, and right ventricle. The results of the scan were contradictory to the biopsy results, which were diagnostic for hepatic carcinoid and cardiac myxoma.
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PMID:Utility of indium-111 octreotide to identify a cardiac metastasis of a carcinoid neoplasm. 2672 80

Carcinoid syndrome is the constellation of symptoms mediated by humoral factors produced by some carcinoid tumors. It consists primarily of vasomotor symptoms, gastrointestinal hypermotility, hypotension, and bronchospasm, due to the production and release of vasoactive substances. Carcinoid heart disease occurs in more than 50% of patients with carcinoid syndrome; in some cases, it represents the initial manifestation of the disease. We report the case of a 75-year-old woman with a metastatic neuroendocrine tumor admitted to the emergency room for fatigue and heart failure. Transthoracic echocardiography showed severe tricuspid and pulmonic regurgitation suggesting carcinoid heart disease. A hypervascular retroperitoneal mass was found on abdominal computed tomography, which seemed to arise from the mesenteric artery, anteriorly to the abdominal aorta. Unfortunately, our patient was neither a candidate for mass resection nor for cardiac surgery due to advanced metastatic disease and poor clinical condition. Additionally, we performed a systematic literature review of carcinoid heart disease focusing on typical echocardiographic findings.
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PMID:Carcinoid Heart Disease: Starting From Heart Failure. 2863 93

Carcinoid heart disease is a devastating paraneoplastic consequence of unchecked hormone production from neuroendocrine tumors (NET) and often results in right-sided heart failure. While it occurs frequently in NET patients with carcinoid syndrome, cardiac metastases occur much less often and are usually only incidentally found. Gallium-68 dotatate (ga-68) is an imaging tracer which binds to somatostatin receptor 2 with greater avidity than Indium-111, the tracer used commonly in octreotide scans. Ga-68 PET/CT is the most sensitive study for detecting occult NET metastases and has emerged as the current imaging gold standard. We describe two cases from Vanderbilt University Medical Center and Stanford University Medical Center where asymptomatic patients with well-differentiated midgut NET were diagnosed with intra-cardiac metastases using ga-68 PET/CT. Management of these patients was altered based on the findings as they underwent extensive cardiac evaluation and initiation of therapy with octreotide. Fortunately, they have not suffered life-threatening cardiac complications seen in some NET patients, from other published series, such as bradycardia, heart block, syncope and arrhythmias. These possibilities suggest early cardiology evaluation and consideration of other therapies beyond octreotide, such as surgery or PRRT, may be essential for all NET patients found to have intra-cardiac metastases.
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PMID:Hidden Figures: Occult Intra-Cardiac Metastases in Asymptomatic Neuroendocrine Tumor Patients. 3138 51

Carcinoid heart disease (CHD) is a consequence of valvular fibrosis triggered by vasoactive substances released from neuroendocrine tumours, classically in those with metastatic disease and resulting in tricuspid and pulmonary valve failure. CHD affects one in five patients who have carcinoid syndrome (CS). Valve leaflets become thickened, retracted and immobile, resulting most often in regurgitation that causes right ventricular dilatation and ultimately, right heart failure. The development of CHD heralds a significantly worse prognosis than those patients with CS who do not develop valvular disease. Diagnosis requires a low threshold of suspicion in all patients with CS, since symptoms occur late in the disease process and clinical signs are difficult to elicit. As a result, routine screening is recommended using the biomarker, N-terminal pro-natriuretic peptide, and regular echocardiography is then required for diagnosis and follow-up. There is no direct medical therapy for CHD, but the focus of non-surgical care is to control CS symptoms, reduce tumour load and decrease hormone levels. Valve surgery improves long-term outcome for those with severe disease compared to medical management, although peri-operative mortality remains at between 10 and 20% in experienced centres. Therefore, care needs to be multidisciplinary at all stages, with clear discussion with the patient and between teams to ensure optimum outcome for these often-complex patients.
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PMID:Multidisciplinary team management of carcinoid heart disease. 3175 5


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