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1.
Acta Med Okayama ; 78(2): 143-149, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38688832

RESUMEN

Travel burden is a poor prognostic factor for many cancers worldwide because it hinders optimal diagnosis and treatment planning. Currently, the impact of travel burden on survival after surgery for non-small cell lung cancer (NSCLC) in Japan is largely unexplored. We examined the impact of travel distance on the postoperative outcomes of patients with NSCLC in Ehime Prefecture, Japan. The data of 1212 patients who underwent surgical resection for NSCLC were retrospectively reviewed. Patients were divided into quartiles based on the travel distance from their home to the hospital (≤ 13 km, 13-40 km, 40-57 km, and > 57 km) in Ehime Prefecture. We found no significant differences among the quartiles in baseline clinicopathological characteristics, including sex, smoking status, histology, surgical procedure, clinical stage, and pathological stage. Overall survival (OS) and relapse-free survival (RFS) also were not significantly different among the travel distance quartiles. We conclude that travel distance did not impact OS or RFS among patients with NSCLC who underwent surgical resection at our institution.


Asunto(s)
Carcinoma de Pulmón de Células no Pequeñas , Neoplasias Pulmonares , Viaje , Humanos , Carcinoma de Pulmón de Células no Pequeñas/cirugía , Carcinoma de Pulmón de Células no Pequeñas/mortalidad , Carcinoma de Pulmón de Células no Pequeñas/patología , Masculino , Femenino , Neoplasias Pulmonares/cirugía , Neoplasias Pulmonares/mortalidad , Neoplasias Pulmonares/patología , Anciano , Persona de Mediana Edad , Japón , Estudios Retrospectivos , Anciano de 80 o más Años , Adulto , Resultado del Tratamiento , Supervivencia sin Enfermedad
2.
Acta Med Okayama ; 76(3): 343-347, 2022 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-35790367

RESUMEN

Localized malignant mesothelioma is a rare disease and little is known about its treatment strategy. We herein report a case of localized malignant pleural mesothelioma that had infiltrated into the anterior mediastinum, which was successfully treated using chemotherapy and conversion surgery. A 63-year-old man with a mediastinal tumor was referred to our hospital. Pathologic analysis of the biopsy specimen showed malignant mesothelioma. Significant tumor shrinkage by cisplatin and pemetrexed was observed and he underwent radical surgery via a median sternotomy. The patient has been disease free for 12 months.


Asunto(s)
Mesotelioma Maligno , Mesotelioma , Neoplasias Pleurales , Humanos , Masculino , Mediastino/patología , Mesotelioma/tratamiento farmacológico , Mesotelioma/patología , Mesotelioma/cirugía , Persona de Mediana Edad , Pemetrexed/uso terapéutico , Neoplasias Pleurales/tratamiento farmacológico , Neoplasias Pleurales/patología , Neoplasias Pleurales/cirugía
3.
Acta Med Okayama ; 73(4): 325-331, 2019 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-31439955

RESUMEN

Therapeutic approaches to bronchopleural fistula (BPF) closure after lung resection are surgical or endoscopic interventions. We evaluated therapeutic outcomes to determine the optimal approach. We reviewed 15 patients who had developed BPF after lung resection for thoracic malignant diseases at our institution in the 10 years since 2008. The patients were 11 men and 4 women (mean age 68 years). We performed one pneumonectomy, 6 lobectomies, 7 segmentectomies, and one partial resection for malignant diseases. The median interval from lung resection to the BPF diagnosis was 46 days. The BPF-associated mortality rate was 26.7% (4/15). The rate of successful BPF closure was 66.6% (10/15). The endoscopic and surgical intervention success rates were 14.2% (1/7) and 69.2% (9/13), respectively (p<0.01). Of 5 patients who had failed BPF treatments, 4 died, and one transferred out without BPF closure. The therapeutic outcomes were related to preoperative comorbidities, performance status at the BPF diagnosis, time intervals from lung resection to BPF diagnosis, and presence of active pneumonia. The difference between endoscopic and surgical outcomes was nonsignificant, although the surgical intervention success rate was somewhat higher. The selection of endoscopic or surgical intervention for BPF does not significantly affect therapeutic outcomes.


Asunto(s)
Fístula Bronquial/patología , Fístula Bronquial/terapia , Pleura/patología , Anciano , Broncoscopía/métodos , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Resultado del Tratamiento
4.
Acta Med Okayama ; 70(3): 183-8, 2016 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-27339207

RESUMEN

We reviewed post-operative complication and mortality rates from 1995 through 2014 and evaluated the changes in those rates across that 20-year period. Two thousand and three hundred sixteen patients with lung cancer underwent resection at our institution between 1995 and 2014. This timespan was divided into four 5-year periods. Each patient's age, Charlson comorbidity index score, and extent of surgery in each 5-year period were summarized, and the changes in these factors over the 20-year span were evaluated. The complication and mortality rates were calculated for each 5-year period, and the changes in those rates over the 20-years were evaluated. The number of patients with higher Charlson comorbidity index scores increased during the 20-year period. Of the 455 patients who developed complications, 97 developed life-threating complications. There were 16 post-operative deaths and 23 in-hospital deaths. There were no significant changes in the complication rate or mortality rate during the 20-year period. Both rates were significantly correlated with the extent of resection. Although the number of patients with comorbidities increased in the 20-year period, the post-operative complication and mortality rates, as well as in-hospital mortality, did not change significantly.


Asunto(s)
Neoplasias Pulmonares/cirugía , Complicaciones Posoperatorias/mortalidad , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Adulto Joven
5.
Acta Med Okayama ; 69(6): 361-3, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26690247

RESUMEN

A 35-year-old Japanese man's routine chest radiography revealed an abnormal opacity. Chest computed tomography and magnetic resonance imaging showed a 5.5 cm in dia. cystic tumor located at the left anterior mediastinum. The tumor was suspected to be an asymptomatic thymic cyst, and we chose observation for the tumor. At the 3-year follow up, the cystic tumor had gradually enlarged to 7.5 cm in dia. and we thus performed a surgical resection via left video-assisted thoracic surgery. An immunohistochemical analysis showed that the cystic tumor was not a thymic cyst but rather a mediastinal cystic lymphangioma. Mediastinal cystic lymphangiomas are very rare, and they are difficult to diagnose preoperatively. Complete surgical resection is proposed for the treatment of such tumors.


Asunto(s)
Linfangioma Quístico/patología , Neoplasias del Mediastino/patología , Adulto , Humanos , Linfangioma Quístico/diagnóstico , Imagen por Resonancia Magnética , Masculino , Neoplasias del Mediastino/diagnóstico , Tomografía Computarizada por Rayos X
6.
Acta Med Okayama ; 69(1): 65-8, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-25703173

RESUMEN

Inflammatory myofibroblastic tumor (IMT) is a rare neoplasm that occurs at different sites in the body. Pleural IMT in particular is especially rare. IMTs infrequently tend to have malignancy. We report a rare case of advanced diaphragmatic parietal pleural IMT with dissemination. A 30-year-old woman complained of right upper abdominal pain. Computed tomography showed a large lobulated mass over the right diaphragm, but no disseminated nodules were noted. Intraoperatively, we found the primary tumor arising from the diaphragmatic parietal pleura and a dozen disseminated nodules, and we removed them completely. The histopathological and immunohistochemical diagnosis was IMT.


Asunto(s)
Diafragma/patología , Granuloma de Células Plasmáticas/patología , Pleura/patología , Adulto , Femenino , Humanos , Inmunohistoquímica , Tomografía Computarizada por Rayos X
7.
Kyobu Geka ; 67(7): 549-52, 2014 Jul.
Artículo en Japonés | MEDLINE | ID: mdl-25137324

RESUMEN

A 54-year-old man with pulmonary non-tuberculous mycobacteriosis( pulmonary NTM) who had been treated by antituberculous chemotherapy, developed a new nodule of 1.3 cm in size in the segment 1/2 of the right upper lobe. The cavity of 3.5 cm in size in the segment 6 of the right lower lobe from which Mycobacterium intracellulare was bronchoscopically detected, was suspected to be pulmonary NTM lesion. Since lung cancer was highly suspected by radiological examinations, right upper lobectomy and S6 segmentectomy were performed. Pathological diagnosis for the right upper lobe nodule was adenocarcinoma.


Asunto(s)
Neoplasias Pulmonares/cirugía , Infección por Mycobacterium avium-intracellulare/cirugía , Antibacterianos/uso terapéutico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Biopsia , Terapia Combinada , Humanos , Neoplasias Pulmonares/complicaciones , Neoplasias Pulmonares/diagnóstico por imagen , Neoplasias Pulmonares/tratamiento farmacológico , Masculino , Persona de Mediana Edad , Infección por Mycobacterium avium-intracellulare/complicaciones , Infección por Mycobacterium avium-intracellulare/diagnóstico por imagen , Infección por Mycobacterium avium-intracellulare/tratamiento farmacológico , Neumonectomía , Radiografía , Resultado del Tratamiento
8.
Pathol Res Pract ; 253: 154967, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-38064868

RESUMEN

Bronchoscopy is a common diagnostic procedure used to identify lung cancer. Specimens acquired through transbronchial biopsy are pivotal in the diagnosis and molecular characterization of this disease. The occurrence of benign mesothelial cells during a transbronchial biopsy (TBB) is relatively rare. Furthermore, these lesions can sometimes be erroneously identified as malignant, potentially resulting in unwarranted or inappropriate treatment for patients with and without lung cancer. In this retrospective analysis, we examined 619 TBB cases at our institute from 2019 to 2021. Benign mesothelial cells were identified via immunohistochemical studies in eight (1.3%) of 619 cases. These cells were classified into three patterns based on their cellular morphology: monolayer, lace, and cobblestone. Recognizing this phenomenon during the procedure is crucial to accurately distinguish benign mesothelial cells from their cancerous counterparts.


Asunto(s)
Enfermedades Pulmonares , Neoplasias Pulmonares , Humanos , Neoplasias Pulmonares/diagnóstico , Neoplasias Pulmonares/patología , Enfermedades Pulmonares/patología , Pulmón/patología , Estudios Retrospectivos , Biopsia/métodos
9.
Nurs Res ; 62(6): 414-21, 2013.
Artículo en Inglés | MEDLINE | ID: mdl-24165217

RESUMEN

BACKGROUND: Smoking cessation is often followed by weight gain, which may attenuate motivation to sustain a quit attempt. OBJECTIVES: The aim was to identify factors associated with weight gain in smokers who received smoking cessation therapy (SCT) in Japan. METHODS: The weight change in 283 smokers between baseline and 12 months after finishing SCT was observed. Factors associated with marked weight gain of 3.5 kg or more were identified using stepwise logistic regression. RESULTS: Smoking cessation success was 83% (234/283) at the completion of SCT but decreased to 69% (194/283) 12 months later. Twelve months after the end of SCT, age 50 and over (OR = 0.38, 95% CI [0.19, 0.76]) and varenicline use (OR = 0.30, 95% CI [0.11, 0.78]) were protected against marked weight gain, whereas presence of a comorbidity (OR = 3.33, 95% CI [1.10, 10.00]), high level of nicotine dependence at baseline (OR = 2.07, 95% CI [1.09, 3.92]), and successfully quitting smoking (OR = 4.57, 95% CI [1.94, 10.08]) were associated with marked weight gain. DISCUSSION: Understanding the factors associated with weight gain after smoking cessation can help in the design of nursing interventions to lessen or prevent weight gain among smokers who try to quit.


Asunto(s)
Pueblo Asiatico/psicología , Cese del Hábito de Fumar/etnología , Cese del Hábito de Fumar/psicología , Tabaquismo/prevención & control , Aumento de Peso/etnología , Adulto , Factores de Edad , Anciano , Benzazepinas/uso terapéutico , Estudios de Cohortes , Femenino , Humanos , Japón , Modelos Logísticos , Masculino , Persona de Mediana Edad , Motivación , Agonistas Nicotínicos/uso terapéutico , Quinoxalinas/uso terapéutico , Factores de Riesgo , Autoinforme , Tabaquismo/etnología , Tabaquismo/psicología , Vareniclina
10.
Acta Med Okayama ; 63(5): 223-30, 2009 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-19893597

RESUMEN

For many years, surgery alone was the standard treatment for patients with stage I-IIIA non-small-cell lung cancer (NSCLC). However, recent studies have demonstrated that adjuvant chemotherapy provides a survival benefit. The first adjuvant chemotherapy for NSCLC was performed in the 1960s using a key drug known as cyclophosphamide. In the 1980s and early 1990s, a new anti-cancer drug, cisplatin, was developed. The first meta-analysis of this drug was conducted by the Non-small Cell Lung Cancer Collaborative Group in 1995. This analysis comparing surgery with surgery plus chemotherapy containing cisplatin produced a hazard ratio of 0.87 and suggested an absolute benefit of chemotherapy of 5% at 5 years;this difference was not statistically significant (p0.08). Several clinical trials of adjuvant chemotherapy were planned after the meta-analysis conducted in 1995, but the efficacy of adjuvant chemotherapy remained a matter of controversy. However, useful evidence was reported after 2003. The International Adjuvant Lung Cancer Collaborative Group Trial (IALT) demonstrated a 4.1% improvement in survival for patients with stage I to III NSCLC. The JBR. 10 trial demonstrated a 15% improvement in 5-year survival for the adjuvant chemotherapy arm in stage IB or II (excluding T3N0) patients. The Adjuvant Navelbine International Trialist Association (ANITA) trial reported that the overall survival at 5 years improved by 8.6% in the chemotherapy arm and that this survival rate was maintained at 7 years (8.4%) in stage II and IIIA patients. A meta-analysis based on collected and pooled individual patient data from the 5 largest randomized trials was conducted by the Lung Adjuvant Cisplatin Evaluation (LACE). This analysis demonstrated that cisplatin-based adjuvant chemotherapy improved survival in patients with stage II or III cancer. Alterna-tively, uracil-tegafur has been developed and tested in Japan. The Japan Lung Cancer Research Group (JLCRG) on Postsurgical Adjuvant Chemotherapy reported a 5-year overall survival advantage of 11% in the uracil-tegafur group patients with stage IB cancer. The efficacy of adjuvant chemotherapy with uracil-tegafur was confirmed in a meta-analysis. In conclusion, the results of phase III trials and a meta-analysis have confirmed the benefit of adjuvant chemotherapy for resected stage IB, II, and IIIA NSCLC.


Asunto(s)
Antineoplásicos/uso terapéutico , Carcinoma de Pulmón de Células no Pequeñas , Quimioterapia Adyuvante , Neoplasias Pulmonares , Carcinoma de Pulmón de Células no Pequeñas/tratamiento farmacológico , Carcinoma de Pulmón de Células no Pequeñas/patología , Carcinoma de Pulmón de Células no Pequeñas/cirugía , Ensayos Clínicos como Asunto , Humanos , Neoplasias Pulmonares/tratamiento farmacológico , Neoplasias Pulmonares/patología , Neoplasias Pulmonares/cirugía , Metaanálisis como Asunto , Tasa de Supervivencia , Tegafur/uso terapéutico , Resultado del Tratamiento , Uracilo/uso terapéutico
11.
Lung Cancer ; 59(3): 377-84, 2008 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-17905465

RESUMEN

The excision repair cross-complementation group 1 (ERCC1) and BRCA1 have been identified as predictors of clinical outcomes among patients with non-small-cell lung cancer (NSCLC) treated with cisplatin-based chemotherapy. In this study, we immunohistochemically examined the ERCC1 and BRCA1 protein expression levels in 35 patients with metastatic mediastinal lymph nodes obtained prior to treatment as retrospective study. These patients had been enrolled in our studies on neoadjuvant chemotherapy with cisplatin and irinotecan (15 patients) or chemoradiotherapy with cisplatin and docetaxel plus concurrent thoracic radiation (20 patients). The relations between the ERCC1 or BRCA1 protein expression and the clinical outcomes of the patients were then examined. The rates of radiological response and pathological effectiveness were significantly higher among patients with ERCC1-negative tumors, compared with those with positive tumors in the neoadjuvant chemotherapy group (radiological response rates; 100% vs. 42.8%, P=0.013; pathological effectiveness; 100% vs. 47.1%, P=0.038), but no associations were observed in the neoadjuvant chemoradiotherapy group. Regarding survival, no significant differences in overall survival or disease-free survival were observed between patients with ERCC1-negative and positive tumors in both the neoadjuvant chemotherapy and chemoradiotherapy groups. In summary, we showed that a ERCC1-negative protein status was significantly related to tumor responsiveness to neoadjuvant chemotherapy with cisplatin and irinotecan, but such a status was not a clear prognostic predictor to cisplatin-based neoadjuvant therapy in NSCLC patients. Further study is needed to clarify the value of molecular predictors for customizing therapy for patients with NSCLC.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Proteína BRCA1/metabolismo , Carcinoma de Pulmón de Células no Pequeñas/metabolismo , Cisplatino/administración & dosificación , Proteínas de Unión al ADN/metabolismo , Endonucleasas/metabolismo , Neoplasias Pulmonares/metabolismo , Camptotecina/administración & dosificación , Camptotecina/análogos & derivados , Carcinoma de Pulmón de Células no Pequeñas/tratamiento farmacológico , Carcinoma de Pulmón de Células no Pequeñas/radioterapia , Distribución de Chi-Cuadrado , Terapia Combinada , Docetaxel , Femenino , Humanos , Inmunohistoquímica , Irinotecán , Neoplasias Pulmonares/tratamiento farmacológico , Neoplasias Pulmonares/radioterapia , Masculino , Persona de Mediana Edad , Terapia Neoadyuvante , Valor Predictivo de las Pruebas , Estudios Retrospectivos , Tasa de Supervivencia , Taxoides/administración & dosificación , Resultado del Tratamiento
12.
Oncol Rep ; 20(5): 1265-8, 2008 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-18949431

RESUMEN

Bone morphogenetic proteins (BMPs) belong to the transforming growth factor-beta superfamily. Recent studies have showed that aberrant methylation of BMP genes is present in several types of human cancer. We examined the expression and methylation status of BMP3b and BMP6 in malignant pleural mesotheliomas (MPMs). The expression status of BMP3b, and BMP6 mRNAs were examined in seven MPM cell lines by RT-PCR assay. The expression of BMP3b was completely suppressed in 2 and partially suppressed in 2 of 7 cell lines and expression of BMP6 was partially suppressed in 2 cell lines. Methylation status of BMP3b in cell lines was determined by methylation-specific assay to find aberrant methylation in 6 cell lines which include 4 cell lines with suppressed BMP3b expression. Partial methylation of BMP6 was found in 2 cell lines whose expression was partially suppressed. Treatment with 5-Aza-dC restored BMP3b expression in methylated cell lines. Next, we examined the methylation status in 57 surgically resected MPM cases and found aberrant methylation of BMP3b in 9 (53%) out of 17 cases from Japan and 3 (8%) of 40 cases from USA and that of BMP6 in 4 (24%) cases from Japan and 12 (30%) cases from USA, showing significant difference in frequency of BMP3b methylation between MPMs of the two countries (P=0.0004). Our study indicated that BMP3b and BMP6 genes were suppressed by DNA methylation and methylation of BMP3b is significantly frequent in Japanese MPMs, suggesting its pathogenic role and the ethnic difference in MPMs.


Asunto(s)
Proteína Morfogenética Ósea 6/genética , Metilación de ADN , Inhibidores Enzimáticos/farmacología , Factor 10 de Diferenciación de Crecimiento/genética , Mesotelioma/genética , Neoplasias Pleurales/genética , Azacitidina/análogos & derivados , Azacitidina/farmacología , Línea Celular Tumoral , Metilación de ADN/efectos de los fármacos , Decitabina , Expresión Génica/efectos de los fármacos , Humanos , Japón/etnología , Mesotelioma/etnología , Neoplasias Pleurales/etnología , Regiones Promotoras Genéticas , ARN Mensajero/análisis , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa , Estados Unidos/etnología
13.
Clin Cancer Res ; 13(19): 5763-8, 2007 Oct 01.
Artículo en Inglés | MEDLINE | ID: mdl-17908966

RESUMEN

PURPOSE: Mutation of epidermal growth factor receptor (EGFR) gene has been reported to be present in non-small cell lung cancer (NSCLC) and significantly associated with female sex and never-smoking status. In this study, we extensively investigated the impact of sex and smoking on the EGFR mutation. EXPERIMENTAL DESIGN: We examined EGFR exons 18 to 21 status in 1,467 NSCLC patients by direct sequencing to study the impact of sex and smoking status on the EGFR mutational spectrum. RESULTS: Among 1,467 patients, 197 mutations were found at exon 19, 176 at exon 21, 21 at exon 18, and 24 at exon 20. To examine the independent effect of sex and smoking, the mutational status of each exon was compared between smokers and never smokers in each sex and between males and females stratified by smoking status. In females, exon 19 (P = 0.001) and exon 21 (P < 0.001) mutations were significantly less frequent in ever smokers compared with never smokers. In males, exon 19 (P < 0.001), exon 21 (P < 0.001), and exon 18 (P = 0.003) mutations were significantly less frequent in ever smokers compared with never smokers. In analysis stratified by smoking, there was no difference in sex among never smokers. However, exon 19 mutations were significantly less frequent in males compared with females among ever smokers (P = 0.003). In addition, the interactive effect of male sex and ever smoking status significantly decreased the frequency of exon 19 mutations (P = 0.047) when female never smoker was set as a reference. CONCLUSION: Both sex and smoking status could influence the EGFR mutational spectrum. Our findings suggest that individual EGFR exons may have differing susceptibilities for mutagenesis.


Asunto(s)
Carcinoma de Pulmón de Células no Pequeñas/genética , Carcinoma de Pulmón de Células no Pequeñas/metabolismo , Análisis Mutacional de ADN , Receptores ErbB/genética , Receptores ErbB/fisiología , Neoplasias Pulmonares/genética , Neoplasias Pulmonares/metabolismo , Fumar , Adulto , Anciano , Anciano de 80 o más Años , Exones , Femenino , Humanos , Masculino , Persona de Mediana Edad , Modelos Biológicos , Factores Sexuales
14.
Gan To Kagaku Ryoho ; 35(10): 1709-12, 2008 Oct.
Artículo en Japonés | MEDLINE | ID: mdl-18931573

RESUMEN

Vinorelbine is a newanti-cancer drug that is available for advanced or metastatic breast cancer, approved by the Japanese Ministry of Health, Labour and Welfare in May 2005. At present, we evaluated the efficacy and safety of vinorelbine in our hospital. 51 patients were treated with vinorelbine since April 1, 2006 to August 20, 2007. Average age was 55.9 years old and period of treatment was 161.9 days. Average number of previous treatments was 2.2, and 37 patients(72.6%)were treated with anthracyclines and taxanes. The response rate was 19.6%, there was one complete responder, and nine partial responders. Especially, the response rate was 16.2% in patients pretreated with anthracyclines and taxanes. The major toxicity was grade 3 or 4 neutropenia(15.7%), and superficial phlebitis(7.8%). Vinorelbine will be a standard treatment agent for patients pretreated with anthracyclines and taxanes.


Asunto(s)
Antineoplásicos/uso terapéutico , Neoplasias de la Mama/tratamiento farmacológico , Neoplasias de la Mama/patología , Vinblastina/análogos & derivados , Adulto , Anciano , Antineoplásicos/efectos adversos , Humanos , Persona de Mediana Edad , Metástasis de la Neoplasia/tratamiento farmacológico , Metástasis de la Neoplasia/patología , Estadificación de Neoplasias , Vinblastina/efectos adversos , Vinblastina/uso terapéutico , Vinorelbina
15.
Lung Cancer ; 56(3): 445-8, 2007 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-17335935

RESUMEN

It has been reported that the threonine-to-methionine substitution at amino acid position 790 (T790M) of the epidermal growth factor receptor (EGFR) gene is correlated with acquired resistance to gefitinib. We previously reported that there was some population that harbored the EGFR T790M mutation as a minor clone of tumor cells prior to drug treatment, may be causing resistance to gefitinib during treatment. This fact also suggests that the detection of the EGFR T790M mutation prior to treatment may predict the development of resistance. We also showed that pleural fluid is a useful specimen for detection of EGFR mutation using sensitive assays. In this study, we reported a female patient who was treated with gefitinib because an EGFR L858R mutation was found in her pleural fluid. Our patient showed partial response to gefitinib, but she had progressive disease only 4 months after the start of treatment. Furthermore, the EGFR T790M mutation was detected in the pleural fluid before gefitinib treatment by the mutant-enriched PCR assay. Our findings confirmed that the EGFR T790M mutation was occasionally present as a minor population in tumor cells before treatment and caused resistance after gefitinib administration. The detection of a small fraction of T790M-positive alleles may be useful to predict the clinical course of the gefitinib-treated non-small-cell lung cancer patients.


Asunto(s)
Adenocarcinoma/genética , ADN de Neoplasias/genética , Resistencia a Antineoplásicos/genética , Receptores ErbB/genética , Mutación , Derrame Pleural Maligno/genética , Quinazolinas/uso terapéutico , Adenocarcinoma/diagnóstico , Adenocarcinoma/tratamiento farmacológico , Anciano de 80 o más Años , Antineoplásicos/uso terapéutico , Biomarcadores de Tumor/genética , Biomarcadores de Tumor/metabolismo , Receptores ErbB/antagonistas & inhibidores , Receptores ErbB/metabolismo , Femenino , Estudios de Seguimiento , Gefitinib , Humanos , Derrame Pleural Maligno/diagnóstico , Derrame Pleural Maligno/tratamiento farmacológico , Reacción en Cadena de la Polimerasa , Pronóstico , Tomografía Computarizada por Rayos X
16.
Asian J Surg ; 40(2): 95-99, 2017 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-26362070

RESUMEN

BACKGROUND/OBJECTIVE: The concept of salvage pulmonary resection after definitive chemoradiotherapy (dCRT) is not yet commonly accepted in lung cancer treatment. We report our experience of eight patients in whom we performed salvage pulmonary resection for residual disease or isolated locoregional recurrence detected after dCRT. METHODS: Between 2005 and 2014, we performed salvage pulmonary resection for eight patients with N2 Stage-IIIA non-small cell lung cancer. The patients had initially received dCRT (radiation ≤ 60 Gy), but eventually underwent pulmonary resection with curative intent for residual disease or isolated locoregional recurrence. The postoperative complications, incidence of recurrence, and survival parameters were evaluated. RESULTS: Salvage pulmonary resection was performed in four patients with residual disease and four patients with locoregional recurrence. Complete resection was successfully performed in all eight patients. Postoperative complications were observed in three patients, however, there were no postoperative mortalities. One patient developed local recurrence in a mediastinal lymph node and two patients died. Of the two fatalities, one was related to lung cancer. The estimated 5-year survival rate of the eight patients was 75.0%. CONCLUSION: We report our experience of salvage pulmonary resection performed for residual disease or isolated locoregional recurrence diagnosed after dCRT in eight patients with locally advanced lung cancer. Although the postoperative complication rate was high, the survival data were favorable. A larger study is needed to confirm the safety and feasibility of salvage pulmonary resection after dCRT.


Asunto(s)
Quimioradioterapia/métodos , Neoplasias Pulmonares/patología , Neoplasias Pulmonares/terapia , Neoplasia Residual/cirugía , Neumonectomía/métodos , Terapia Recuperativa/métodos , Adenocarcinoma/mortalidad , Adenocarcinoma/patología , Adenocarcinoma/terapia , Anciano , Carcinoma de Células Escamosas/mortalidad , Carcinoma de Células Escamosas/patología , Carcinoma de Células Escamosas/terapia , Supervivencia sin Enfermedad , Femenino , Humanos , Japón , Estimación de Kaplan-Meier , Neoplasias Pulmonares/mortalidad , Masculino , Persona de Mediana Edad , Recurrencia Local de Neoplasia/mortalidad , Recurrencia Local de Neoplasia/patología , Recurrencia Local de Neoplasia/cirugía , Neumonectomía/mortalidad , Pronóstico , Estudios Retrospectivos , Medición de Riesgo , Muestreo , Análisis de Supervivencia , Resultado del Tratamiento
17.
Lung Cancer (Auckl) ; 7: 45-51, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-28210160

RESUMEN

A large number of studies have demonstrated that 2-deoxy-2-[fluorine-18]fluoro-d-glucose positron emission tomography/computed tomography (FDG-PET/CT) is superior to conventional modalities for the diagnosis of lung cancer and the evaluation of the extent of the disease. However, the efficacy of PET/CT in a follow-up surveillance setting following curative-intent treatments for lung cancer has not yet been established. We reviewed previous papers and evaluated the potential efficacy of PET-CT in the setting of follow-up surveillance. The following are our findings: 1) PET/CT is considered to be superior or equivalent to conventional modalities for the detection of local recurrence. However, inflammatory changes and fibrosis after treatments in local areas often result in false-positive findings; 2) the detection of asymptomatic distant metastasis is considered to be an advantage of PET/CT in a follow-up setting. However, it should be noted that detection of brain metastasis with PET/CT has some limitation, similar to its use in pretreatment staging; 3) additional radiation exposure and higher medical cost arising from the use of PET/CT should be taken into consideration, particularly in patients who might not have cancer after curative-intent treatment and are expected to have a long lifespan. The absence of any data regarding survival benefits and/or improvements in quality of life is another critical issue. In summary, PET/CT is considered to be more accurate and sensitive than conventional modalities for the detection of asymptomatic recurrence after curative-intent treatments. These advantages could modify subsequent management in patients with suspected recurrence and might contribute to the selection of appropriate treatments for recurrence. Therefore, PET/CT may be an alternative to conventional follow-up modalities. However, several important issues remain to be solved. PET/CT in a follow-up surveillance setting is generally not recommended in clinical practice at the moment.

18.
J Thorac Oncol ; 11(7): 1012-28, 2016 07.
Artículo en Inglés | MEDLINE | ID: mdl-27089851

RESUMEN

INTRODUCTION: The purpose of this study was to evaluate the natural course of the progression of pulmonary subsolid nodules (SSNs). MATERIALS AND METHODS: Eight facilities participated in this study. A total of 795 patients with 1229 SSNs were assessed for the frequency of invasive adenocarcinomas. SSNs were classified into three categories: pure ground-glass nodules (PGGNs), heterogeneous GGNs (HGGNs) (solid component detected only in lung windows), and part-solid nodules. RESULTS: The mean prospective follow-up period was 4.3 ± 2.5 years. SSNs were classified at baseline as follows: 1046 PGGNs, 81 HGGNs, and 102 part-solid nodules. Among the 1046 PGGNs, 13 (1.2%) developed into HGGNs and 56 (5.4%) developed into part-solid nodules. Among the 81 HGGNs, 16 (19.8%) developed into part-solid nodules. Thus, the SSNs at the final follow-up were classified as follows: 977 PGGNs, 78 HGGNs, and 174 part-solid nodules. Of the 977 PGGNs, 35 were resected (nine minimally invasive adenocarcinomas [MIAs], 21 adenocarcinomas in situ [AIS], and five atypical adenomatous hyperplasias). Of the 78 HGGNs, seven were resected (five MIAs and two AIS). Of the 174 part-solid nodules, 49 were resected (12 invasive adenocarcinomas, 26 MIAs, 10 AIS, and one adenomatous hyperplasia). For the PGGNs, the mean period until their development into part-solid nodules was 3.8 ± 2.0 years, whereas the mean period for the HGGNs was 2.1 ± 2.3 years (p = 0.0004). CONCLUSION: This study revealed the frequencies and periods of development from PGGNs and HGGNs into part-solid nodules. Invasive adenocarcinomas were diagnosed only among the part-solid nodules, corresponding to 1% of all 1229 SSNs.


Asunto(s)
Neoplasias Pulmonares/patología , Nódulo Pulmonar Solitario/patología , Anciano , Femenino , Humanos , Neoplasias Pulmonares/diagnóstico por imagen , Neoplasias Pulmonares/cirugía , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Nódulo Pulmonar Solitario/diagnóstico por imagen , Nódulo Pulmonar Solitario/cirugía , Tomografía Computarizada por Rayos X
19.
Chest ; 144(4): 1238-1244, 2013 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-23681341

RESUMEN

BACKGROUND: Patients with lung cancer often present with recurrence, even after resection. The identification of risk factors for recurrence after resection is useful. METHODS: Among 1,338 patients with lung cancer who underwent a complete resection, 277 developed recurrences post surgery. Data regarding the TNM factors, histologic subtype, and presence/absence of vessel invasion were analyzed retrospectively using the survival tree method to identify groups with a high risk of recurrence after resection. RESULTS: The results revealed that the T factor, the N factor, and lymphatic (ly) and blood (v) vessel invasion were related to the risk of recurrence, and six combinations of these factors were identified using the survival tree method: group A: v = 0, T ≤ 1b, ly = 0; group B: v = 0, T ≤ 1b, ly ≥ 1; group C: v = 0, T ≥ 2a; group D: v ≥ 1, N ≤ 1, T ≤ 2b; group E: v ≥ 1, N ≤ 1, T ≥ 3; and group F: v ≥ 1, N ≥ 2. The six groups were then further classified into three groups: a low-risk group (group A), a moderate-risk group (groups B, C, and D), and a high-risk group (groups E and F). The 5-year recurrence-free survival rate was approximately 98% for the low-risk group, 75% for the moderate-risk group, and 30% for the high-risk group. CONCLUSIONS: Combining the T, N, v, and ly factors allowed the precise identification of a group with a high risk of recurrence after resection.


Asunto(s)
Carcinoma de Pulmón de Células no Pequeñas/mortalidad , Carcinoma de Pulmón de Células no Pequeñas/cirugía , Neoplasias Pulmonares/mortalidad , Neoplasias Pulmonares/cirugía , Recurrencia Local de Neoplasia/mortalidad , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Medición de Riesgo , Factores de Riesgo , Tasa de Supervivencia
20.
Gen Thorac Cardiovasc Surg ; 60(5): 285-8, 2012 May.
Artículo en Inglés | MEDLINE | ID: mdl-22453538

RESUMEN

BACKGROUND: Patients undergoing pulmonary resection often suffer from a dry, hacking cough, which is usually refractory to opioid cough suppressors such as codeine. The cough is often painful and impairs the quality of life of the patients. The efficacy of an inhaled corticosteroid plus ß2-agonist against the persistent cough after pulmonary resection was evaluated in this study. METHODS: We enrolled 21 patients in this prospective study of the efficacy of an inhaled corticosteroid plus ß2-agonist against persistent cough following pulmonary resection. After baseline evaluation of the severity of the postoperative persistent cough using a visual analog scale (VAS), treatment with an inhaled corticosteroid plus ß2-agonist was initiated and continued for 2 weeks. At the end of the 2 weeks, the cough severity was evaluated again using a VAS. RESULTS: The median grade of cough on the VAS before the start of the inhaled treatment was 4 (range 3-8). At the end of 2 weeks of treatment with an inhaled corticosteroid plus ß2 agonist, the median grade of cough on the VAS decreased from 4 to 1 (range 0-4). As an adverse effect of the inhalation, hoarseness was observed in one patient, which disappeared promptly after discontinuing the inhalations. CONCLUSION: Treatment with an inhaled corticosteroid plus ß2 agonist appeared to be highly effective, without severe adverse effects, against the persistent cough suffered by patients after pulmonary resection.


Asunto(s)
Corticoesteroides/administración & dosificación , Agonistas de Receptores Adrenérgicos beta 2/administración & dosificación , Albuterol/análogos & derivados , Androstadienos/administración & dosificación , Antitusígenos/administración & dosificación , Budesonida/administración & dosificación , Tos/tratamiento farmacológico , Etanolaminas/administración & dosificación , Neumonectomía/efectos adversos , Administración por Inhalación , Corticoesteroides/efectos adversos , Agonistas de Receptores Adrenérgicos beta 2/efectos adversos , Anciano , Albuterol/administración & dosificación , Albuterol/efectos adversos , Androstadienos/efectos adversos , Antitusígenos/efectos adversos , Budesonida/efectos adversos , Combinación Budesonida y Fumarato de Formoterol , Distribución de Chi-Cuadrado , Tos/diagnóstico , Tos/etiología , Combinación de Medicamentos , Etanolaminas/efectos adversos , Femenino , Combinación Fluticasona-Salmeterol , Fumarato de Formoterol , Humanos , Japón , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Índice de Severidad de la Enfermedad , Factores de Tiempo , Resultado del Tratamiento
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