Publications by authors named "H Niikawa"

Article Synopsis
  • A 46-year-old woman on low-dose estrogen-progestin therapy for endometriosis developed a right-sided pneumothorax, which is a collapsed lung.
  • Surgical investigation revealed a pulmonary bulla and a small diaphragm defect, leading to the discovery of endometrial tissue in the lung, thus diagnosing thoracic endometriosis.
  • This case highlights that catamenial pneumothorax can still happen in patients receiving hormonal treatment for endometriosis, indicating the need for ongoing awareness among clinicians.
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Article Synopsis
  • The subclavian vessel surgery faces challenges due to limited access, but open repair may be necessary for issues like large aneurysms or trauma, leading to the use of the transmanubrial osteomuscular sparing approach, which offers better visibility.
  • Three case studies illustrate the effectiveness of this technique: one involving an aneurysm, another dealing with an abscess from a forgotten guidewire, and a third correcting a misplaced dialysis catheter.
  • The transmanubrial approach was consistently used under cardiopulmonary bypass support, demonstrating its utility and safety in complex subclavian procedures.
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Background: Lung transplantation is a vital option for patients with end-stage lung disease. However, it faces a significant challenge due to the shortage of compatible donors, which particularly affects individuals with small chest cavities and pediatric patients. The novel approach of cadaveric lobar lung transplantation is a promising solution to alleviate the donor shortage crisis.

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Lung transplant (LTx) recipients face a significant risk from coronavirus disease 2019 (COVID-19), with elevated hospitalization mortality rates even post-vaccination. While severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) typically induces pneumonia in even healthy individuals, it can also infect the transplanted lungs of LTx recipients, potentially leading to graft dysfunction. Despite the prevalence of COVID-19 pneumonia in LTx recipients, data on its characteristics and associated risk factors remain limited.

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A 41-year-old woman with lymphangioleiomyomatosis developed a bronchial anastomotic stenosis after left single lung transplantation (LTx). A part of the hyperinflated right native lung was excised in an attempt to remedy the left lung compression, which appeared to affect the bronchial anastomotic stenosis and ventilation/perfusion mismatch. However, a persistent air leak after the surgery caused empyema and an open window thoracotomy (OWT) was performed.

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