Publications by authors named "Shiro Shigematsu"

Salivary gland tumors can also occur rarely in the retromolar area, though common near the junction of hard and soft palate, labial mucosa, and buccal mucosa. Most salivary gland tumors in the retromolar pad area are malignant and should be excised. The cystadenoma is a rare, benign, salivary gland tumor.

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Article Synopsis
  • In April 2012, Japan's health insurance system included perioperative oral management (POM) to help reduce pneumonia risk in cancer patients, leading to a noticeable decrease in postoperative pneumonia rates.
  • A study comparing 11,886 patients treated before and 13,668 patients treated after POM's implementation showed significant reductions in pneumonia cases, hospital stays, and deaths.
  • The cost-effectiveness analysis revealed that preventing pneumonia costs about 111,927 yen per patient, resulting in a potential savings of over 250 million yen in healthcare costs, suggesting future improvements in POM efficiency.
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Oral squamous cell carcinoma is generally characterized by poor prognosis, and biomarkers are needed for development and selection of therapy. The purpose of this study was to assess expression of actinin-4, which has been implicated in cancer invasion and metastasis, to determine its viability as a prognostic indicator in oral squamous cell carcinoma. Clinical factors and tumor samples immunohistochemically stained for actinin-4 were retrospectively investigated in 55 patients who underwent curative surgery for oral squamous cell carcinoma.

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Aim: We conducted a multicenter study to explore the risk factors of developing pneumonia and the effectiveness of perioperative oral management (POM) for the prevention of pneumonia in postsurgical patients.

Methods And Results: A survey covering eight regional hospitals was conducted over 4 years, from April 2010 to March 2014. Using the Diagnosis Procedure Combination database, a target group of 25,554 patients with cancer who underwent surgery was selected and assessed from a population of 346,563 patients without pneumonia on admission (sample population).

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Swelling of the cervical lymph nodes may indicate lymphadenitis, malignant lymphoma, or metastasis. Lymph nodes larger than 10 mm on computed tomography (CT) are strongly indicative of postoperative metastasis from carcinoma. Here, we report a case of large, inflamed lymph nodes mimicking metastasis.

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