Publications by authors named "Kazuhito Misawa"

Background: Immune checkpoint inhibitor plus platinum-etoposide (PE) improved overall survival (OS) in patients with extensive-stage small cell lung cancer (ES-SCLC). While the CASPIAN trial demonstrated the efficacy of durvalumab plus PE, the clinical trial results may not be representative of the general, real-world population because clinical trials often have strict inclusion and exclusion criteria. We herein report the efficacy and safety of durvalumab plus PE in patients with ES-SCLC in real-world, clinical practice.

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Alectinib is a selective anaplastic lymphoma kinase (ALK) tyrosine kinase inhibitor as standard therapy for ALK-rearranged non-small cell lung cancer (NSCLC). Hemolytic anemia is considered as a rare but significant adverse event with alectinib. Here, we report a case of a 73-year-old female with lung adenocarcinoma, harbouring an ALK fusion gene, who received alectinib as second-line therapy and developed gradually progressive grade 4 (6.

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Adenoid cystic carcinoma (ACC) is a rare type of malignant tracheal tumor originating from the secretory glands. Complete surgical resection is the current standard of care for tracheal ACC. However, there have been few case reports of chemoradiotherapy for unresectable tracheal ACC.

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Summary: A 31-year-old man with Williams syndrome (WS) was referred to our hospital because of a 9-year history of hypertension, hypokalemia, and high plasma aldosterone concentration to renin activity ratio. A diagnosis of primary aldosteronism (PA) was clinically confirmed but an abdominal CT scan showed no abnormal findings in his adrenal glands. However, a 13-mm hypervascular tumor in the posterosuperior segment of the right hepatic lobe was detected.

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Article Synopsis
  • Anorectal abscesses are common but can lead to serious health issues if they extend upwards, as seen in a case involving a 53-year-old woman with severe symptoms and acute kidney injury.
  • Imaging revealed a large abscess affecting the retroperitoneal spaces, which required surgical drainage through a lower abdominal incision.
  • The study suggests that a midline extraperitoneal approach can be an effective treatment for patients with extensive retroperitoneal abscesses, given their potential life-threatening nature.
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In a 72 years old woman, abdominal computed tomography (CT) disclosed multicentric hypervascular tumor in S4 of the liver, and it was T1.T2 by the MRI, and a high signal was presented together. Stenosis was shown by ERCP at the same site.

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Pseudomyxoma peritonei is generally caused by appendiceal and ovarian tumors. Other primary sites have been rarely reported. We describe herein the second reported case of pseudomyxoma peritonei due to mucinous cystadenocarcinoma of the urachus.

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Article Synopsis
  • Assessment of gastrointestinal stromal tumors (GISTs) involves measuring maximum tumor size, mitotic index, and the Ki-67 labeling index, which indicates cell growth, with a Ki-67 value of 10% or higher suggesting worse prognosis.
  • A study analyzed factors from 15 patients who had gastric stromal tumors, finding significant differences in tumor size, mitotic index, and Ki-67 values between patients with metastasis/recurrence and benign groups.
  • The findings highlight that these indices are valuable for evaluating malignancy in gastric stromal tumors, while surgical removal may not be enough for patients with widespread metastasis.
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A 64-year-old-male had recurrent paraaortic lymph node and liver metastases eight months after total gastrectomy and with distal pancreatectomy and splenectomy for advanced gastric cancer. Combined chemotherapy with 5-FU and a low-dose of CDDP was effective and the both lesions disappeared. Thirteen months later, a second recurrence of anterior mediastinum lymph node metastases occurred.

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