Publications by authors named "Kaoru Kaseda"

A pheochromocytoma is a malignant tumor with metastatic potential. Moreover, the cardiovascular effects of abnormal amounts of catecholamines resulting from pheochromocytoma impact prognosis. Resection of the primary tumor is useful for reducing catecholamine production; however, the significance of resection of metastases remains unclear.

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Objectives: Cases of severe pectus excavatum presenting with worsening cardiopulmonary symptoms in the upright position have been reported. However, the underlying mechanism remains unclear. We evaluated posture-related morphological changes of the thorax in patients with pectus excavatum.

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Article Synopsis
  • The Nuss procedure is a minimally invasive surgery for pectus excavatum that has seen various improvements, though the effects of using multiple bars on surgical outcomes are still uncertain.
  • A study evaluated 225 patients who underwent the procedure, comparing outcomes between those with 1-2 bars and those with 3 or more bars; results showed more asymmetric conditions and postoperative pleurisy in the group with more bars.
  • The study concluded that while using multiple bars can help correct asymmetric cases, there is an increased risk of postoperative complications, particularly pleurisy, that should be monitored.
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Purpose: Salvage surgery for primary lung cancer is expected to become increasingly common. This study aimed to clarify the survival impact of pathologic characteristics after salvage surgery.

Methods: Consecutive patients who underwent salvage surgery following definitive chemoradiotherapy or systemic therapy for initially unresectable lung cancer from 2010 to 2020 were enrolled in this study.

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Background: Sarcomatoid carcinoma of the lung is a rare histological type of non-small cell lung cancer with a poor prognosis. We aimed to investigate the clinicopathological characteristics and prognostic factors of surgically resected sarcomatoid carcinoma of the lung.

Methods: We retrospectively reviewed 14999 patients who underwent surgical resection for non-small cell lung cancer accumulated by the Japanese Joint Committee of Lung Cancer Registry in 2010.

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Objective: The quality of life (QOL) and psychological states of patients with pectus excavatum (PE) have yet to be well understood. This study aimed to evaluate the health-related QOL (HRQOL), psychological states, and personality traits of patients with PE, alongside the associations of these factors with the severity of PE.

Methods: A cross-sectional evaluation was prospectively performed in patients scheduled to undergo PE repair surgery between July 2019 and April 2021.

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Purpose: Surgical patients with thymoma and myasthenia gravis (MG) must have their MG status and oncological outcomes critically monitored. We aimed to identify clinicopathological predictors of the postoperative MG status.

Methods: We conducted a retrospective review of 40 consecutive surgical patients with MG-related thymomas between 2002 and 2020.

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Article Synopsis
  • Pectus excavatum (PE) can lead to breathing issues, especially in patients like a 74-year-old woman with a history of the condition and oropharyngeal cancer surgery.
  • After experiencing breathing difficulties, imaging revealed severe PE and a narrowed right main bronchus.
  • A Nuss procedure was successfully performed to repair PE and relieve bronchial stenosis, resulting in improved structure observed on follow-up CT scans and reduced shortness of breath.
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Pectus excavatum (PE) is often associated with scoliosis and can elicit cardiovascular disturbances under rare conditions. Here we report a patient who was treated with a combined Ravitch and Nuss procedure for PE with dyspnea following scoliosis repair to improve her symptoms. The patient was a 49-year-old woman with a history of PE and scoliosis.

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The Nuss procedure for pectus excavatum (PE) is both less invasive and very simple compared to the Ravitch procedure. However, it may be difficult to perform the Nuss procedure in cases of severe PE. Therefore, we developed a Combined Ravitch and Nuss (CRN) procedure and examined its effectiveness in patients with severe PE.

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Article Synopsis
  • The study investigates the rising trend of salvage surgeries for advanced non-small cell lung cancer (NSCLC) post-drug therapy, aiming to identify survival prognostic factors.
  • The research involved a retrospective analysis of 32 patients from four hospitals, classifying prior therapies into cytotoxic agents, tyrosine kinase inhibitors (TKIs), and immune checkpoint inhibitors.
  • Results indicated that the 5-year overall survival rate post-surgery was 66%, with key factors like prior TKI therapy and lower preoperative serum carcinoembryonic antigen (CEA) levels being linked to better survival outcomes.
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  • - Pulmonary MALT lymphoma is a rare type of cancer, and a study reported on seven cases, noting various tumor appearances on CT scans, such as solitary masses and multiple nodules with ill-defined margins and air bronchograms.
  • - All seven patients were diagnosed with pulmonary MALT lymphoma after surgery; six underwent complete resection while one had an open lung biopsy.
  • - The prognosis for patients is generally favorable, with a progression-free survival time averaging 52 months, indicating that monitoring without immediate treatment may be a viable option in some cases.
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Background: In our institution, computed tomography (CT)-guided percutaneous cryoablation has been performed in patients with malignant lung tumors under local anesthesia. This study aimed to examine the feasibility and safety of percutaneous cryoablation for the treatment of malignant lung tumors.

Methods: From July 2002 to December 2016, 227 patients (56 with primary lung cancer and 171 with metastatic lung tumor) underwent percutaneous cryoablation for the treatment of malignant lung tumors using a cryosurgical unit at our institution.

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  • Alveolar air leakage after lung wedge resection is a common complication, often exacerbated by traditional suturing methods that can create additional pleural damage.
  • The study compared the effectiveness of a new technique called the double stapling method versus the conventional suturing with pledgets using porcine lungs as a model for pleural defects.
  • Results showed that the double stapling method had a significantly higher closure success rate (90%) compared to suturing with pledgets (20%), indicating it may be a better option for preventing air leaks.
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Background: Unilateral diaphragmatic paralysis is a condition in which the unilateral diaphragm is paralyzed and elevated. Orthopnea due to lung compression by an elevated diaphragm in the supine position is common in patients with unilateral diaphragmatic paralysis. Although its symptom is posture-dependent, the effect of posture on lung function in unilateral diaphragmatic paralysis has not been studied.

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Coil embolization is widely performed for pulmonary arteriovenous malformations (PAVMs). We describe herein 2 cases of hemoptysis during long-term follow-up after coil embolization for PAVMs. For both cases, lobectomy was performed and histopathological examinations revealed chronic inflammation and bronchial epithelium extension into the sac of the PAVM.

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Objectives: Advances in drug therapy and radiotherapy for non-small cell lung cancer resulted in an increased number of salvage surgeries for initially unresectable tumors. This study aimed to evaluate the safety and efficacy of salvage surgery for non-small cell lung cancer.

Methods: We defined salvage surgery as (1) surgery for local recurrence/residual tumor after definitive chemoradiotherapy/radiotherapy (salvage surgery in a narrow sense) or (2) conversion surgery after non-surgical treatment.

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Debulking surgery, also called cytoreductive surgery, is a resection of the tumor as much as possible and an intended incomplete resection for unresectable malignant tumors. Since the most important principle in surgical oncology is complete R0 resection, debulking surgery goes against the basic principle and obscures the concept of operability. However, debulking surgery has been advocated for various types of advanced malignant tumors, including gynecological cancers, urological cancers, gastrointestinal cancers, breast cancers and other malignancies, with or without adjuvant therapy.

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Background: Although completion lobectomy is the treatment of choice for local recurrence of non-small cell lung cancer after segmentectomy, few cases have been reported. We report four patients who underwent completion lobectomies for staple line recurrence after segmentectomy for stage I non-small cell lung cancer.

Case Presentation: Three women aged 65, 82, and 81 years underwent completion lower lobectomy after superior segmentectomy of the same lobe for local recurrence of stage I non-small cell lung cancer.

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Background: The aim of this study was to investigate the clinicopathological and prognostic features of operable non-small cell lung cancer (NSCLC) patients with diabetes mellitus (DM).

Methods: A total of 1231 surgically resected NSCLC patients were retrospectively reviewed. Clinicopathological characteristics were compared between patients with DM (DM group, n = 139) and those without DM (non-DM group, n = 1092).

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Article Synopsis
  • * Combining CT with fluorodeoxyglucose F 18 (FDG) positron emission tomography (PET) enhances diagnostic accuracy for staging NSCLC, while FDG-PET/MRI has emerged as a powerful tool due to its insights on metabolic activity and tumor cellularity.
  • * Recent advances in FDG-PET imaging, particularly through radiomics, are improving treatment decisions and prognosis for NSCLC, aiming to enhance long-term survival rates.
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Recent improvement of outcomes for resected non-small cell lung cancer (NSCLC) has been contributed not only by increased detection of early-stage disease and improvement of preoperative diagnosis/perioperative management but also by improvement of multimodality treatment. The introduction of newly developed systemic therapies including molecular targeted agents and immune checkpoint inhibitors dramatically changed clinical outcomes of advanced NSCLC. Accordingly, the role of surgery during the multimodality treatment will be changed more than ever.

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Background: Plasma D-dimer level, a marker of hypercoagulation, has been reported to be associated with survival in several types of cancers. The present study aimed to evaluate the prognostic significance of preoperative D-dimer levels in patients with surgically resected clinical stage I non-small cell lung cancer (NSCLC).

Methods: Participants comprised 237 patients with surgically resected clinical stage I NSCLC.

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