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  • Title: [MRI findings in a testicular epidermoid cyst: a case report].
    Author: Oguchi N, Kawamura H, Ohara T, Matsuda T.
    Journal: Hinyokika Kiyo; 1998 Oct; 44(10):747-9. PubMed ID: 9850844.
    Abstract:
    A 21-year-old man was admitted with a painless mass in the left testis. Physical examination revealed a firm, small-finger sized, mass lesion with a smooth surface in the left testis. The ultrasonographic appearance was a hypoechoic lesion with an echogenic rim in the left testis. Magnetic resonance imaging (MRI) findings showed the echogenic rim to be a low-signal zone on both T1 and T2-weighted images. The center, on T2-weighted images, had a low signal intensity, with peripheral high signal intensity. Under a preoperative diagnosis of epidermoid cyst, the mass was resected surgically with preservation of the testis. Histopathological diagnosis confirmed an epidermoid cyst. Preoperative ultrasonographic and MRI findings suggested a benign lesion, thus permitting preservation of the testis.
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