Survival outcomes of lung metastases from colorectal cancer treated with pulmonary metastasectomy or modern systemic chemotherapy: a single institution experience.

BACKGROUND: Although pulmonary metastasectomy is an accepted treatment strategy for resectable lung metastases (LM) from colorectal cancer (CRC), its survival benefits are controversial. In contrast, recent advancements in chemotherapy have significantly improved metastatic CRC prognosis. This study aimed to evaluate survival outcome of LM from CRC in the age of newly developed chemotherapy. METHODS: We retrospectively reviewed 50 patients who underwent complete resection and 22 patients who received chemotherapy as definitive treatment for LM from resected CRC at our hospital. The present study was limited to patients who started treatment for isolated LM after molecular targeted drugs became available in Japan. RESULTS: Overall survival (OS), cancer-specific survival (CSS), disease-free survival (DFS) rates after pulmonary resection were 64.5%, 66.4%, and 32.6% at five years, respectively. OS and CSS rates of chemotherapy patients were 26.8% and 28.3% at five years, with a median progression-free survival time of 10.0 months. When compared the characteristics of surgical and chemotherapy patients, patients with pN factors of CRC (p = 0.013), smaller size (p < 0.001), larger number (p < 0.001), and bilateral (p < 0.001) LM received chemotherapy. Univariate analysis showed that multiple LM and rectal lesions were poor prognostic factors for OS (p = 0.012) and DFS (p = 0.017) in surgical patients, and rectal lesions were a poor prognostic factor for OS (p = 0.013) in chemotherapy patients. CONCLUSIONS: Pulmonary metastasectomy showed a favorable survival in patients with LM from CRC. Despite the high recurrence rate after metastasectomy and recent advances in chemotherapy, surgical resection could still be considered as a valid option among multidisciplinary treatments. TRIAL REGISTRATION: The research plan was approved by the Institutional Review Board of Shinko Hospital (No. 2142) on February 7, 2022.

[Solitary Mixed Squamous and Glandular Papilloma of the Peripheral Lung:Report of a Case].

A 76-year-old woman was admitted because of a 25 mm solitary nodule in right S10 on chest computed tomography (CT). 18 fluoro deoxyglucose-positron emission tomography (FDG-PET) indicated accumulation with standardized uptake value( SUV) max 5.2. The serum carcinoembryonic antigen( CEA) and squamous cell carcinoma antigen( SCC) level was elevated. Although the diagnosis was not established by bronchofiberscopy, lung cancer was suspected and the video assisted thoracoscopic surgery (VATS) was carried out. Since no malignant cells were detected by intra-operative pathology, partial resection of the right lower lobe was performed. The postoperative pathological examination revealed features of mixed squamous and glandular papilloma.

[Vagal Schwannoma in the Middle Mediastinum Found by Atelectasis on Chest X-ray:Report of a Case].

An 70-year-old woman was reffered to our hospital to examine for a left lower lobe atelectasis on chest X-ray. Chest computed tomography (CT) showed the mass in middle mediastinum. The video-assisted thoracoscopic surgery( VATS) was performed to establish diagnosis and treat. 50 mm mass was found in the area surrounded by the descending thorasic aorta, esophagus, left atrium, left lower lobe, and mesiastinal pleura, and was regarded as a neurogenic tumor originating from the pulmonary branch of the vagal nerve. The histopathological diagnosis was benign schwannoma. She was dischraged on the seventh postoperative day, without any neurological complications.

[Basaloid Squamous Cell Carcinoma;Report of a Case].

We report a resected case of basaloid squamous cell carcinoma (BSC). BSC is a rare type of malignant lung tumor. A 79-year-old woman had a 13 mm tumor in the left upper lobe on chest computed tomography (CT). On fluorodeoxyglucose-position emission tomography (FDG-PET), the tumor showed the accumulation of FDG with an SUVmax of 14.7. A left upper lobectomy with lymph node dissection was performed by video-assisted thoracoscopic surgery. The pathological diagnosis was BSC (pT2aN0M0, stage IB). There was no recurrence following lung cancer resection for 12 months. BSC is generally poor prognosis.

[Fetal Adenocarcinoma of the Lung].

We report a resected case of fetal adenocarcinoma. Fetal adenocarcinoma is a rare type of malignant lung tumor. A 53-year-old man had a 25 mm tumor in the right upper lobe on chest computed tomography. On fluorodeoxyglucose-positron emission tomography( FDG-PET), the tumor showed the accumulation of FDG with a standardized uptake value( SUV) max of 5.63. He underwent bronchoscopic examination, but a diagnosis was not established. We suspected that the tumor was primary lung cancer or metastatic lung tumor of rectal cancer which was resected prior to the treatment for pulmonary lesion. A right upper lobectomy with lymph node dissection was performed and the pathological diagnosis was high-grade fetal adenocarcinoma, stage IB (pT2aN0M0). The patient was treated with postoperative adjuvant chemotherapy. There has been no recurrence after surgery resection for 9 months.

[Growth Process of Cystic Lung Cancer Followed with Computed Tomography Findings Over 5 Years].

An estimated 2~16% of primary lung cancers form cavities with cases that form thin-walled cavities being comparatively rare. We treated a patient with squamous cell carcinoma of the lung with a small cystic shadow that showed no changes for 3 years. The cyst then suddenly grew larger, after which the cyst wall thickened over time and a thin-walled cavity was seen. Here we report this important case showing the development process of lung cancer that formed a thin-walled cavity, together with a discussion of the literature.

Clinical characteristics and outcomes of patients with community-acquired, health-care-associated and hospital-acquired empyema.

BACKGROUND AND AIMS: Patients with pneumonia, a common cause of empyema, are stratified based on their risk factors, and the treatment of empyema might benefit from this risk stratification. METHODS: The etiology, bacteriologic profile and outcome of patients diagnosed with empyema in Shinko Hospital between May 2005 and October 2013 were retrospectively studied. The patients were stratified according to whether they had community-acquired empyema (CAE), health-care-associated empyema (HCAE) or hospital-acquired empyema (HAE). RESULTS: The study included 81 patients, 25 CAE, 40 HCAE and 16 HAE. The comorbidity rate was highest among HAE patients (100%), followed by 95% of HCAE and 72% of CAE patients (P = 0.005). The rates of cancer and central nervous system (CNS) disease were higher in patients with HCAE and HAE than in patients with CAE (P = 0.030, P = 0.018, respectively). Pleural fluid cultures were positive in 58/81 patients. Streptococcus species were the most common organisms cultured from CAE (12/15) and HCAE patients (17/30), but not from HAE patients (3/13). Anaerobic organisms were cultured from 3 CAE, 5 HCAE and 3 HAE patients. Methicillin-resistant Staphylococcus aureus and Pseudomonas aeruginosa were only cultured from HCAE and HAE patients. The mortality rates were higher in HCAE (18%) and HAE (50%) than in CAE (4%) patients (log-rank test: P = 0.0012). CONCLUSIONS: Half of patients with empyema were HCAE patients, who had comorbidities, bacteriological profile and outcome different from CAE patients. The patient with HCAE should be differentiated from CAE patient, and the stratification of patients based on risk factors may be useful for treatment strategy.

Increased red blood cell distribution width associates with cancer stage and prognosis in patients with lung cancer.

BACKGROUND: Red cell distribution width (RDW), one of many routinely examined parameters, shows the heterogeneity in erythrocyte size. We investigated the association of RDW levels with clinical parameters and prognosis of lung cancer patients. METHODS: Clinical and laboratory data from 332 patients with lung cancer in a single institution were retrospectively studied by univariate analysis. Kaplan-Meier survival analysis and Cox proportional hazard models were used to examine the effect of RDW on survival. RESULTS: THE RDW LEVELS WERE DIVIDED INTO TWO GROUPS: high RDW (>=15%), n=73 vs. low RDW, n=259 (<15%). Univariate analysis showed that there were significant associations of high RDW values with cancer stage, performance status, presence of other disease, white blood cell count, hemoglobin, mean corpuscular volume, platelet count, albumin level, C-reactive protein level, and cytokeratin 19 fragment level. Kruskal-Wallis tests revealed an association of RDW values with cancer stage in patients irrespective of comorbidity (patient with/without comorbidity: p<0.0001, patient without comorbidity: p<0.0001). Stages I-IV lung cancer patients with higher RDW values had poorer prognoses than those with lower RDW values (Wilcoxon test: p=0.002). In particular, the survival rates of stage I and II patients (n=141) were lower in the high RDW group (n=19) than in the low RDW group (n=122) (Wilcoxon test: p<0.001). Moreover, multivariate analysis showed higher RDW is a significant prognostic factor (p=0.040). CONCLUSION: RDW is associated with several factors that reflect inflammation and malnutrition in lung cancer patients. Moreover, high levels of RDW are associated with poor survival. RDW might be used as a new and convenient marker to determine a patient's general condition and to predict the mortality risk of lung cancer patients.

[Two cases of recurrent invasive mucinous adenocarcinoma of the lung showing marked responses to platinum-based chemotherapyregimens with pemetrexed and bevacizumab].

Here, we report 2 cases of recurrent invasive mucinous adenocarcinoma of the lung after surgery, which showed marked responses to platinum-based regimens with pemetrexed(PEM)and bevacizumab(BEV). The first patient was diagnosed with stage I B(p-T2N0M0)invasive mucinous adenocarcinoma, and new nodules were detected on computed tomography (CT)after 24 months of adjuvant chemotherapy with uracil/tegafur(UFT). Therefore, the patient was administered carboplatin(CBDCA; AUC 5.0), PEM(500mg/m2), and BEV(15mg/kg)for 6 courses followed by BEV(15mg/kg)for 3 courses, resulting in a complete response. The second patient was diagnosed with stage IV(p-T3N0M1)invasive mucinous adenocarcinoma, and metastases appeared after the surgery. The patient was treated with S-1 for 18 weeks, but the tumor recurred 18weeks after surgery. Therefore, the patient was administered 4 courses of cisplatin(CDDP 60mg/m2), PEM(500mg/m2), and BEV(15mg/kg)followed by 5 courses of PEM(15mg/kg)as maintenance therapy. This resulted in a good response. The first patient had grade 3 toxicities at the sixth course of combined CBDCA-PEM-BEV therapy, while the second patient did not have any adverse events throughout chemotherapy. These 2 cases showed that platinum-based regimens with PEM and BEV may be a good choice for patients with invasive mucinous adenocarcinoma of the lung.

Orbital metastasis secondary to pulmonary adenocarcinoma treated with gefitinib: a case report.

INTRODUCTION: Orbital metastases of lung cancer are rare. However, because the number of patients diagnosed with lung cancer is increasing, the probability that a physician will see a patient with an orbital metastasis is also increasing. Unfortunately, the clinical course and response of these patients to cytotoxic chemotherapy are generally poor and keeping a patient's quality of vision is difficult. In recent years, gefitinib, an epidermal growth factor receptor tyrosine kinase inhibitor, has brightened the outlook for patients with advanced non-small cell lung cancer, especially for those who carry epidermal growth factor receptor-activating mutations. CASE PRESENTATION: A 62-year-old Japanese man presented with swelling of the eyelid margin and ptosis of his right eye. A physical examination revealed double vision in his right eye and an alteration in elevator muscle mobility. A magnetic resonance image demonstrated a right intra-orbital mass (18 × 16mm). Screening examinations were carried out because this mass was suspected to be a metastasis from another organ. Chest computed tomography revealed a 42 × 37mm mass shadow on the left side of the hilum with mediastinal lymph node metastases. Adenocarcinoma with an epidermal growth factor receptor gene mutation (exon 19 deletion L747-E749; A750P) was detected in a transbronchial biopsy specimen; the patient was diagnosed with stage IV (T2N2M1) non-small cell lung cancer.Gefitinib (250mg/day) was chosen as first-line chemotherapy because there was no pre-existing interstitial shadow. After two months of treatment, the patient's right eye opened completely and follow-up magnetic resonance imaging revealed a marked reduction of the intra-orbital mass to 14 × 13mm. Three months after treatment initiation, a follow-up computed tomography showed a marked reduction in the size of the primary lesion to 23 × 20mm. The patient is continuing gefitinib treatment without any adverse effects noted on computed tomography, physical, or laboratory examination. CONCLUSIONS: We report the case of a patient with an orbital non-small cell lung cancer metastasis with epidermal growth factor receptor-activating mutations. This metastasis, as well as the primary lesion, showed a marked response to the molecular targeting drug gefitinib, and the patient's vision was kept without an invasive procedure. Gefitinib may be a good first choice for patients with orbital non-small cell lung cancer metastasis harboring epidermal growth factor receptor-activating mutations.

[A case of pulmonary carcinomatous lymphangitis and multiple pulmonary infarctions from gastric cancer].

We report a case of pulmonary carcinomatous lymphangitis and multiple pulmonary infarctions from gastric cancer. A 58-year-old housewife presented with a complaint of a worsening cough over the previous 6 weeks. Chest radiography and CT scans revealed infiltration and diffuse ground-glass opacities in both lung fields, and she was hospitalized for further examination. No specific findings were found upon screening examination, including bronchoscopy with bronchoalveolar lavage (BAL). However, a CT scan showed mediastinal, hilar and paraaortic lymph node swelling, and therefore we suspected the presence of a malignant tumor. On the 11th hospital day, she suddenly developed severe hypoxia and went into cardiogenic shock. Although there was no sign of a filling defect in the vessels on CT with an intravenous contrast, we diagnosed pulmonary thromboembolism based on other examination findings and began thrombolysis and anticoagulant therapy. Treatment with heparin and urokinase did not improve her condition, and she died on the 14th hospital day. The autopsy findings revealed widespread gastric cancer with pulmonary lymphangitis carcinomatosa and thrombus formation in arterioles throughout the pulmonary lobes: 'Trousseau syndrome'.

Thymolipoma, report of a case suggesting an origin from thymic true hyperplasia.

The authors describe a rare case of thymolipoma in a 26-year-old, otherwise healthy woman presenting with general fatigue. Radiological examinations disclosed a large anterior mediastinal mass. Macroscopically, the resected tumor was approximately 5 × 10 cm², with nodular configuration, and microscopically, 3 components were identified: a normal thymic rim, hyperplastic thymic tissue, and a typical thymolipomatous component at the periphery of the hyperplastic area. The predominant component of the tumor was hyperplastic thymic tissue. The tumor was diagnosed as thymolipoma at the initial stage of development. This case suggests the histogenesis of thymolipoma-fatty regression or infiltration of fatty tissue into a previously hyperplastic thymus.

[A case of pulmonary dirofilariasis diagnosed by biopsy, immunological tests and the clinical course without operation].

A 52-year-old woman who was a pet trimmer by occupation and had four cats, presented with cold-like symptoms. Her chest radiograph and CT scan on admission showed a tumor about 4cm in size with spicula and ground-glass opacity in the right middle lobe. We performed fiberoptic bronchoscopy and CT-guided percutaneous needle lung biopsy on the suspicion of lung cancer, but the tissue consisted largely of granulation tissue with eosinophilic infiltration and no findings of malignancy. The cold-like symptoms subsided and C-reactive protein became within the normal range. Because of the histological findings, her occupation and her pets, we suspected pulmonary dirofilariasis. We asked the National Institute for Infectious Diseases for specific IgG antibody assays to various parasite antigens, which showed positive finding for pulmonary dirofilariasis. We therefore diagnosed pulmonary dirofilariasis and did not perform an operation.

Induction chemoradiotherapy (carboplatin-taxane and concurrent 50-Gy radiation) for bulky cN2, N3 non-small cell lung cancer.

OBJECTIVE: To improve the prognosis of cN2, N3 non-small cell lung cancer, we performed induction chemoradiotherapy (carboplatin-taxane chemotherapy and concurrent 50-Gy radiation) followed by surgery. METHODS: Patients with pathologically proven non-small cell lung cancer with bulky cN2, N3 disease were enrolled. Forty-one patients underwent an operation after chemoradiotherapy from January 2000 to April 2006. Either carboplatin-paclitaxel (n = 19) or carboplatin-docetaxel (n = 22) chemotherapy was randomly used. Two cycles of chemotherapy were performed with concurrent radiation (50 Gy). In all cases, conventional radiological reevaluations were performed; in the latest 21 cases, reevaluations with positron-emission tomography with fludeoxyglucose F 18 were also performed. RESULTS: In all 41 cases, complete resections were performed, with no operative mortality. The histologically complete response rate, major response rate, and minor response rate were 17.1% (7/41), 56.1% (23/41), and 26.8% (11/41), respectively. The 5-year overall survival was 52.7%. There were no differences in survival between taxane groups. Both the complete response and the major response groups revealed a significantly better 5-year survivals than the minor response group (85.7%, P = .044, 52.4%, P = .01). Even with persistent N2 disease, the 5-year survival in the major response group (66%) was promising. With the combination of conventional computed tomography and positron-emission tomography with fludeoxyglucose F 18 for reevaluation, eligible patients could be selected for this protocol. CONCLUSION: Surgery after chemoradiotherapy (carboplatin-taxane and 50-Gy radiation) for bulky cN2, N3 non-small cell lung cancer can be safely performed with promising results. Even with persistent N2 disease, the survival in the major response group was promising.

A surgical case of primary lung cancer with peripheral intrapulmonary lymph node metastasis.

We report on a case of a patient with lung adenocarcinoma and peripheral intrapulmonary lymph node (IPLN) metastasis who was misdiagnosed as having intrapulmonary metastasis. A subpleural nodular shadow visualized by radiography was diagnosed as an intrapulmonary metastasis originating from primary lung cancer. Preoperative evaluation indicated that this case was a clinical T4N1 lung adenocarcinoma with metastasis in the same lobe. However, postoperative evaluation showed that it was a peripheral IPLN metastasis, and this was actually a case of pathologic T2N1 adenocarcinoma. It may have been possible to treat this case non-surgically with the possibility of radical cure. This case suggests that a nodule is present in the same lobe with lung cancer, and it must be borne in mind that IPLN metastasis may be misdiagnosed as intrapulmonary metastasis.

Lobar bronchial atresia demonstrating a cystic lesion without overinflation.

Congenital bronchial atresia (CBA) is an infrequent pulmonary anomaly characterized, in general, by a blindly terminating bronchus, mucoid impaction, and hyperinflation of the peripheral pulmonary parenchyma. We herein report an adult case of lobar bronchial atresia who showed no hyperinflation of the peripheral pulmonary parenchyma.

A useful protocol for analyses of mutations of the epidermal growth factor receptor gene.

Recent studies have reported that mutations of the epidermal growth factor receptor (EGFR) gene are associated with the responsiveness of tyrosine kinase inhibitors (TKIs), which are molecular targets for non-small cell lung cancer (NSCLC). To provide genetic analyses for NSCLC patients, a simple and reliable method using paraffin-embedded materials is needed. The DEXPAT DNA extraction kit was used for DNA extraction from paraffin-embedded materials. DNA was amplified using the nested PCR technique, then analyzed by direct sequencing for EGFR mutations (exons 18 to 21). The phenol/chloroform extraction for DNA was also performed for comparison. When the DEXPAT kit was used, distinct bands were observed in all products after nested PCR assays of paraffin-embedded materials. Distinct sequencing signals were obtained. Results from the sequencing analysis of paraffin-embedded materials and frozen materials were completely concordant. The current study suggests that DNA extraction with the DEXPAT kit followed by nested PCR is a simple and reliable technique for analyzing the EGFR gene status with paraffin-embedded samples.

Large cell carcinoma with neuroendocrine morphology of the lung.

We experienced a surgical case of large cell carcinoma with neuroendocrine morphology (LCCNM) of the lung. A 76-year-old man was admitted to our hospital because a routine chest X-ray examination had revealed a nodular shadow in the left lung field. 18F-fluorodeoxyglucose positron emission tomography showed accumulation of fluorodeoxyglucose in an area corresponding to the shadow. Transbronchial lung biopsy failed to give a definitive diagnosis, therefore open lung biopsy was performed because of suspected lung cancer. Needle biopsy was performed, and the tumor was diagnosed as large cell neuroendocrine carcinoma by rapid intraoperative pathological examination. As sampling of hilar lymph nodes revealed no metastasis, left upper segmentectomy was performed for severe obstructive pulmonary disease. Immunohistochemical examination finally diagnosed the tumor as LCCNM. The patient is doing well without recurrence at ten months after surgery.

Successful treatment for lung cancer associated with pulmonary sequestration.

We encountered a 69-year-old man with lung adenocarcinoma and pulmonary sequestration. The cancer lesion was located in the left upper lobe, with sequestration of the left lower lobe. Left upper lobectomy was performed after induction chemoradiotherapy, but the sequestered lung lobe was preserved because the preoperative respiratory function was poor. Preservation of the sequestered lung during surgery for lung cancer should be considered in patients who have poor respiratory function and no signs of respiratory infection.

Myoepithelial carcinoma of the lung.

Primary lung carcinomas showing features of salivary gland-type neoplasms are rare. Many are mucoepidermoid carcinomas and adenoid cystic carcinomas. Myoepithelial carcinoma of the lung is extremely rare, and in the WHO classification is classified as 'Others' among carcinomas of the salivary gland. The pertinent literature is restricted to a few pathological reports, and hardly any clinical examinations have been performed. Here we report a resected case of myoepithelial carcinoma of the lung, including details of clinical examination, with a review of previously documented cases.