A case of pleomorphic adenoma with marked cystic changes in the parotid gland

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  • TAKAHASHI Akio
    Department of Oncological Science (Oral and Maxillo-Facial Surgery), Faculty of Medicine, Oita University
  • KAWANO Kenji
    Department of Oncological Science (Oral and Maxillo-Facial Surgery), Faculty of Medicine, Oita University
  • MATO Takanori
    Department of Oncological Science (Oral and Maxillo-Facial Surgery), Faculty of Medicine, Oita University
  • ANAN Daisaku
    Department of Oncological Science (Oral and Maxillo-Facial Surgery), Faculty of Medicine, Oita University
  • YANAGISAWA Shigetaka
    Department of Oncological Science (Oral and Maxillo-Facial Surgery), Faculty of Medicine, Oita University

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Other Title
  • 著明な嚢胞化を生じた耳下腺多形性腺腫の１例
  • チョメイナ ノウホウカ オ ショウジタ ジカセン タケイセイ センシュ ノ 1レイ

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Abstract

A case of parotid pleomorphic adenoma with marked cystic changes is presented. A 70-year-old woman was referred to our hospital because of a painless swelling in the left parotid area. Ultrasonography demonstrated a well-demarcated apparently benign lesion in the parotid gland. MRI showed high signal intensities on Ti-, T2-, and fat-suppressed Tl-weighted images. Under a tentative diagnosis of parotid cyst, the lesion was excised with the patient under general anesthesia. The excised material was a cystic lesion with focal thickening of the wall. Pathological examination showed that a large cyst had formed in the tumor parenchyma of a pleomorphic adenoma. There has been no evidence of recurrence as of 5 years 3 months after the operation.

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