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AJNR - American Journal of Neuroradiology

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Dynamic Helical CT of T1 and T2 Glottic Carcinomas: Predictive Value for Local Control with Radiation Therapy

Ryuji Murakami^,a, Mitsuhiro Furusawa^a, Yuji Baba^a, Ryuichi Nishimura^a, Fumihiro Katsura^a, Masao Eura^a, Keisuke Masuyama^a and Mutsumasa Takahashi^a

^a From the Departments of Radiology (R.M., M.F., Y.B., R.N., M.T.) and Otorhinolaryngology (F.K., M.E., K.M.), Kumamoto University School of Medicine, Kumamoto, Japan.

View larger version (136K): [in a new window]   FIG 1. A 68-year-old man with glottic carcinoma of the right true cord (T2 stage). This patient was curatively treated with radiation therapy. Dynamic helical CT shows an enhanced mass in the right true cord with a volume of 545 mm3 (arrow). The thyroid cartilage is intact.FIG 2. A 71-year-old man with glottic carcinoma of the left true cord (T2 stage). This patient had a local recurrence after radiation therapy. Dynamic helical CT shows an enhanced mass in the left true cord with a volume of 871 mm3 (arrows). The tumor is adjacent to the left thyroid cartilage with irregular cortex.FIG 3. A 68-year-old man with an anterior commissure tumor (T2 stage). This patient was curatively treated with radiation therapy. Dynamic helical CT shows an enhanced area in the anterior third of the bilateral true cords with a volume of 152 mm3 (arrows). The lesion involves the anterior commissure, but the thyroid cartilage is intact.FIG 4. A 51-year-old man with an anterior commissure tumor (T2 stage). This patient had a local recurrence after radiation therapy. Dynamic helical CT shows an enhanced mass of the bilateral true cords with a volume of 429 mm3 (arrows). The tumor is adjacent to the anterior half of the left thyroid cartilage with irregular cortex (arrowhead)