Yasuhisa Shinozaki

Relationship between appearance of tongue carcinoma on intraoral ultrasonography and histopathologic findings

OBJECTIVE To clarify whether intraoral ultrasonography (I-US) is effective for predicting metastasis of tongue cancer to the cervical lymph nodes. STUDY DESIGN Participants comprised 29 patients with tongue carcinoma classified as T1-T4 using the TNM staging system. All patients underwent I-US preoperatively. Postoperatively, resected specimens were evaluated histopathologically. RESULTS I-US found that cases with invasive depth ≥3 mm had higher potential for cervical lymph node metastasis than those with invasive depth <3 mm (P < .05). No other significant relationships were identified between observations on I-US and cervical lymph node metastasis. Cases with histopathologic blood vessel infiltration or lymph duct infiltration had a significant difference in risk of cervical lymph node metastasis. CONCLUSIONS I-US is useful for preoperatively assessing the invasive depth of tongue carcinoma. Furthermore, observations from I-US and invasive depth of the tumor allowed presumptive diagnosis with regard to cervical lymph node metastasis.

Metastatic Clear Cell Carcinoma of the Mandible in a Patient with Renal Cancer undergoing Haemodialysis

Abstract A 76-year-old man undergoing haemodialysis for chronic renal failure presented with swelling in the right lower gingiva. Biopsy of the oral mass revealed clear cell carcinoma, and whole body computed tomography and magnetic resonance imaging revealed a mass in the left kidney. The patient was treated with local radiotherapy and immunotherapy and remains alive with cancer at the time of writing.