Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0684249 (lung carcinoma)
 23,830 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Management of isolated metastatic deposits to the lungs and the role of surgical resection, specifically video-assisted thoracic surgery (VATS) techniques, have been controversial. The inability to perform a detailed bimanual palpation of the lung for occult lesions has been considered an inherent weakness in this approach. We have performed VATS resection for 205 patients with pulmonary metastatic disease and potentially curative VATS resec-tion for 119 patients. VATS resection was successfully performed for all VATS diagnostic and therapeutic patients, with no perioperative deaths. Longitudinal follow-up demonstrated a mean survival of 20 months in the diagnostic group and 32 months in the therapeutic group. In the VATS therapeutic group, 44 (37%) patients remain free of disease at a mean follow-up of 37 months. Of the 69 recurrences, 6% were local, 25% were regional, and 67% were distant. In this review, the present role of VATS pulmonary metastasectomy will be examined.
Clin Lung Cancer 2001 May
PMID:The role of video-assisted thoracic surgery for pulmonary metastasectomy. 1472 Mar 63

Lambert-Eaton myasthenic syndrome (LEMS) is an autoimmune channelopathy in which patients produce autoantibodies directed against voltage-gated calcium channels. Autoantibodies down-regulate calcium channels resulting in reduced transmitter release, which in turn leads to muscular weakness and autonomic dysfunction. LEMS is paraneoplastic in 60-70% of patients, most frequently associated with small cell lung carcinoma (SCLC). SCLC lines express many neuronal and neuroendocrine proteins including neuronal calcium channels of the Cav2 family (P/Q and N-type channels). It is thus likely that the paraneoplastic form of LEMS is the consequence of an anti-tumoral immune response and the production of antibodies that cross-react with identical or homologous antigens in nerve terminals. Neurological symptoms generally appear several Months before detection of the tumor. Consequently correct diagnosis of LEMS is crucial as it can allow early treatment of a particularly aggressive carcinoma. Based on published studies, our laboratory has set-up serological assays for LEMS autoantibodies as an aid to diagnosis. Calcium channels in detergent extracts of rat brain or cerebellum membranes were labeled with radioligands specific for N-type (125I-omega conotoxin GVIA) or P/Q-type (125I-omega conotoxin MVIIC) calcium channels. Autoantibodies that immunoprecipitate the ligand/channel complex can thus be titrated. Analysis of 31 LEMS sera revealed the presence of anti-N type channel antibodies in 58% and anti-P/Q type channel antibodies in 74% of patients with titres ranging from 90 to 2950 pM. Only 5 patients were seronegative in both tests, thus a combination of the two assays reliably detected autoantibodies in 26/31 (84%) patients.
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PMID:[Dosage and specificity of anti-calcium channel antibodies in Lambert-Eaton myasthenic syndrome]. 1526 57

The Lambert-Eaton myasthenic syndrome (LEMS) is typically recognized as a paraneoplastic syndrome associated with a small cell lung carcinoma (SCLC), whereas LEMS with other neuroendocrine lung tumors, including carcinoids or large cell lung carcinoma, are highly unusual. Here, we report a rare case of LEMS with atypical bronchopulmonary carcinoid tumor: a 65-yr-old man presented with progressive leg weakness and a diagnosis of LEMS was made by serial repetitive nerve stimulation test. Chest CT revealed a lung nodule with enlargement of paratracheal lymph nodes, and surgically resected lesion showed pathological features of atypical carcinoid tumor. We concluded that LEMS could be associated with rare pulmonary neuroendocrine tumor other than SCLC, which necessitates pathologic confirmation followed by aggressive treatment for optimal management in these rare cases.
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PMID:A case of Lambert-Eaton myasthenic syndrome associated with atypical bronchopulmonary carcinoid tumor. 1548 57

The authors describe a case of 80-years old male hospitalized because of radiological and clinical signs suggestive of right-sided pneumonia. The main complaints of the patient were of productive cough with increasing amounts of watery sputum irregular fever up to 39 degrees C, progressive dyspnea, generalized weakness and loss of weight. Despite extensive use of antimicrobial and antituberculosis agents significant deterioration of patients general condition and the progression of X-ray picture were observed, inflammatory infiltration started to encompass the contralateral lung. Bronchial washing revealed the presence of atypical and neoplasmatic cells of adenous origin type. Since this finding contrasted with the pattern of radiological abnormality that did not show any tumor-like changes, another diagnostic approach was undertaken. Transthoracic fine needle aspiration biopsy revealed cells of non-small cell lung carcinoma. The diagnosis of bronchioalveolar carcinoma established on the basis of clinicoradiologic pattern was confirmed at autopsy. Increasing bronchorrhea was the most prominent symptom.
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PMID:[Bronchorrhea in a case of pneumonic type of bronchioloalveolar carcinoma]. 1567 72

Lambert-Eaton myasthenic syndrome (LEMS) is an autoimmune disorder of neuromuscular and autonomic transmission in which IgG autoantibodies lead to presynaptic voltage-gated calcium channel (VGCC) loss, or as a paraneoplastic disorder in association with small cell lung carcinoma (SCLC). Recent results strongly suggest that the antibodies to P/Q-type VGCC are the principal pathogenic factors in LEMS. Here, we present diagnosis and treatment of LEMS patients. Proximal weakness, depressed tendon reflexes, autonomic symptoms, and electrical posttetanic potentiation together are essential to accurately diagnose LEMS. The diagnosis is established immunologically by the presence of anti-P/Q-type VGCC antibodies, detected using the (125)I-omega-conotoxin MVIIC radioimmunoassay, which will be present in 85% of LEMS patients. The drug 3,4-diaminopyridine with anti-cholinesterase inhibitor is most effective in LEMS patients with or without SCLC. In LEMS with SCLC, specific tumor therapy will often improve the neurological disorder. In some cases plasmapheresis or intravenous immunoglobulin may be indicated.
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PMID:[Lambert-Eaton myasthenic syndrome: diagnosis and treatment]. 1577 66

Lambert-Eaton myasthenic syndrome (LEMS), an autoimmune neuromuscular disorder, often has underlying small-cell lung cancer (SCLC). Thorough search for SCLC in patients with LEMS can result in early detection of limited-stage SCLC, one quarter of which can be successfully treated with chemotherapy and radiation therapy. To elucidate the pathogenesis, diagnosis, treatment, and prognosis of patients with SCLC and LEMS, we present a 51-year-old man who was diagnosed with LEMS and limited-stage SCLC after an 18-month history of weakness in the lower extremities. The patient exhibited a complete response in lung tumors and a resolution in LEMS symptoms after chemotherapy and radiation therapy.
Clin Lung Cancer 2006 Jan
PMID:Lambert-eaton myasthenic syndrome in a patient with small-cell lung cancer. 1651 85

Tumor-induced skeletal muscle wasting (SMW) contributes to the fatigue and weakness experienced by persons with cancer cachexia. Tumor necrosis factor-alpha (TNFa) and cyclooxygenase (COX) activity have been implicated in SMW in some animal models of cancer cachexia. We report that indomethacin, a nonspecific inhibitor of COX, and NS398, a specific inhibitor of COX2, preserved muscle mass and reduced type 1 TNF receptors in muscles of mice bearing the Lewis lung carcinoma, but not in mice bearing the B16 melanoma. These data suggest that tumor-induced SMW can occur via a COX2-independent pathway. The COX2-dependent pathway may involve reducing the catabolic effects of TNFa in muscle. Further study is needed to understand the relationship between COX and SMW, and whether patients with cancer cachexia might benefit from COX inhibitors.
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PMID:Inhibitors of COX activity preserve muscle mass in mice bearing the Lewis lung carcinoma, but not the B16 melanoma. 1653 83

This study explores if advanced NSCLC patients with ECOG PS 2 and age<or=65 years can benefit from weekly docetaxel+carboplatin, with acceptable toxicities. Fifty-nine eligible patients with Stage IIIB (effusion) or Stage IV NSCLC were registered. Patients received docetaxel 35mg/m(2) and carboplatin AUC=2 on Days 1, 8, and 15 every 28-day cycle (maximum 8 cycles). Endpoints were 1-year survival, tumor response, PFS, and safety. Among the 59 eligible patients, the 1-year survival was 28% and median survival was 6 months (range: 1-24.3). The median duration of response for CR+PR was 5.4 months (range: 2.3-9.7), 1-year progression-free survival was 14% (median of 3.7 months, range<1-22.8). Patients received a median of 3 cycles (range: 1-9); 14 patients (24%) had toxicity-related reductions. Responses were: 1 CR (2%), 5 PR (10%), 22 SD (45%), and 21 PD (43%). Forty-nine patients were evaluable for response; 10 patients were non-evaluable due to: radiotherapy (1), withdrew consent (3), insurance issues (1), and early toxicity (1 each; dyspnea, weakness, and rash), and other illness (2). Fifty-eight patients were evaluable for safety. The primary Grade 3 or 4 toxicities were neutropenia and fatigue (10% each), nausea (9%), dehydration (7%), and vomiting (5%). A 12% response rate (plus 45% SD) confirms the relatively poor outcome of patients with advanced NSCLC who are PS 2. Toxicities of docetaxel+carboplatin are comparable to other regimens and this combination may provide an alternative for this group of patients. Further studies correlating patient characteristics with response are necessary.
Lung Cancer 2006 Jun
PMID:Results of a Phase II study of weekly docetaxel and carboplatin in Stage IIIB (with effusion) or Stage IV non-small cell lung cancer patients age<or=65 and performance status 2. 1662 Nov 29

A few series in the literature were published before 1987 on syndrome of inappropriate antidiuretic hormone secretion (SIADH) in small cell lung cancer (SCLC). This study examines the outcome in more recent era. From 1981-1998, there were 1417 new cases of SCLC diagnosed in the provincial registry, of which 244 were of limited stage (LS). A chart review and statistical analyses were performed using Mann-Whitney test, chi-square test and Kaplan-Meier method. Fourteen LS patients (group A) had SIADH at presentation. Group B consisted of 230 LS patients without SIADH. There were more patients with poorer performance status (ECOG 2-4) in group A than B (28.6% versus 7.8%, P=0.03). Otherwise, sex, age at diagnosis, nodal spread, pleural effusion, bronchial obstruction, superior vena cava obstruction, performance status, weight loss, and lactic dehydrogenase at presentation, were comparable between the two groups. Treatments given, e.g., extent of surgical resection (if performed, whether complete/incomplete), total number of chemotherapy cycles, radiotherapy doses, were comparable (P>0.05). The response to chemo-radiation was not significantly different (P=0.7). Five-year overall survival (8% versus 19%, P=0.08), and cause-specific survival (16% versus 20%, P=0.13) showed that group A patients had a worse outcome, though of borderline significance. Symptoms related to SIADH included: weakness, 4 patients; tiredness, 3; change in level of consciousness, 1; seizure, 1. The range of lowest sodium level was 110-129. Two patients also had paraneoplastic myopathy. SIADH resolved in 12 patients at 1.6-44.7 weeks (median: 4.3). Among the 14 patients who initially presented with SIADH and recurred later, 10 had recurrence of SIADH at the time of tumor recurrence. Serum sodium was useful for post-treatment surveillance in SCLC patients who presented with SIADH, with 71% (10/14) developing SIADH again at the time of recurrence. SIADH is a poor prognostic factor for LS SCLC.
Lung Cancer 2006 Aug
PMID:Syndrome of inappropriate antidiuretic hormone secretion (SIADH) in patients with limited stage small cell lung cancer. 1678 84

Hepatic carcinoid tumors are very uncommon; most are clinically non-functional and very few present with the symptoms of carcinoid syndrome. ACTH-producing carcinoid tumors most commonly originate in the lung or thymus and present insidiously with bronchospasm and/or chest mass. Occasionally, ectopic ACTH syndromes have been reported in association with pancreatic islet cell tumors, medullary thyroid cancer, pheochromocytoma, small-cell lung carcinoma, and rarely, ovarian and prostate tumors. We report here a patient with an ectopic ACTH-secreting primary hepatic carcinoid tumor who presented with cushingoid appearance, profound proximal muscle weakness, severe lower extremity edema, and markedly elevated urinary free cortisol. ACTH levels were in the low normal range. A solitary vascular hepatic lesion was found on magnetic resonance imaging, which was isodense with the surrounding liver on octreotide scan and photopenic on an 18-fluorodeoxyglucose (18FDG)-positron emission tomography (PET) scan. Following surgical resection of the hepatic tumor, histopathology confirmed an ACTH-secreting neuroendocrine tumor (NET), the patient had complete resolution of hypercortisolemic symptoms and remains in remission, now 4 yr after hepatic tumor resection. This case reports the first ACTH-secreting primary hepatic NET presenting as ectopic Cushing's syndrome. Interesting aspects of this case include the presence of a pituitary incidentaloma, the low normal ACTH, and photopenia on 18FDG-PET imaging.
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PMID:Primary hepatic carcinoid tumor presenting as Cushing's syndrome. 1755 71


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