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Findings of parotid basal cell adenoma on magnetic resonance imaging



To explore the features of basal cell adenoma of the parotid gland on magnetic resonance imaging (MRI).


The MRI features of 12 parotid basal cell adenomas (6 females, 6 males; mean age 53 years) confirmed by pathology were retrospectively analyzed. All MR images were evaluated with respect to tumor number, size, location, shape, marginal morphology, presence of necrosis/cysts, and enhancement behavior.


All cases showed a single mass, giving a total of 12 masses in the 12 cases. Seven masses were located in the left parotid and five masses in the right parotid. Nine masses involved the superficial and deep parotid lobes simultaneously. Regarding shape, seven masses were oval and five were round. The maximum diameter of the mass was <3 cm in 10 cases. All masses had a capsule and well-defined margin. A necrotic/cystic region was found in all masses. The solid regions of all masses showed hypointensity on T1-weighted images (T1WI)/T2-weighted images (T2WI) and hyperintensity on coronal fat suppression T2WI compared with surrounding parotid tissues. The solid regions of 11 masses showed slight heterogeneous enhancement, while the remaining tumor with >90 % cystic component was not analyzed for homogeneity of enhancement. All masses showed significant enhancement in the arterial phase and 8 masses showed plateau-type enhancement in the venous phase.


Typical basal cell adenomas in the parotid appear as oval/round masses with a well-defined margin, focal cystic/necrotic component, hypointensity on T1WI/T2WI compared with surrounding parotid tissues, mild heterogeneous internal enhancement, significant arterial enhancement, and plateau-type venous enhancement.

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  1. 1.

    Jang M, Park D, Lee SR, Hahm CK, Kim Y, Park CK, et al. Basal cell adenoma in the parotid gland: CT and MR findings. AJNR Am J Neuroradiol. 2004;25:631–5.

  2. 2.

    Barnes L. Pathology and genetics of head and neck tumours. Lyon: IARC Press; 2005. p. 263.

  3. 3.

    Yerli H, Teksam M, Aydin E, Coskun M, Ozdemir H, Agildere AM. Basal cell adenoma of the parotid gland: dynamic CT and MRI findings. Br J Radiol. 2005;78:642–5.

  4. 4.

    Tsushima Y, Matsumoto M, Endo K, Aihara T, Nakajima T. Characteristic bright signal of parotid pleomorphic adenomas on T2-weighted MR images with pathological correlation. Clin Radiol. 1994;49:485–9.

  5. 5.

    Takeshita T, Tanaka H, Harasawa A, Kaminaga T, Imamura T, Furui S. CT and MR findings of basal cell adenoma of the parotid gland. Radiat Med. 2004;22:260–4.

  6. 6.

    Okahara M, Kiyosue H, Matsumoto S, Hori Y, Tanoue S, Uchida D, et al. Basal cell adenoma of the parotid gland: MR imaging findings with pathologic correlation. Am J Neuroradiol. 2006;27:700–4.

  7. 7.

    Lee DK, Chung KW, Baek CH, Jeong HS, Ko YH, Son YI. Basal cell adenoma of the parotid gland: characteristics of 2-phase helical computed tomography and magnetic resonance imaging. J Comput Assist Tomogr. 2005;29:884–8.

  8. 8.

    Jeong AK, Lee HK, Kim SY, Cho KJ. Basal cell adenoma in the parapharyngeal space: MR findings. Clin Imaging. 2001;25:392–5.

  9. 9.

    American College of Radiology. American College of Radiology breast imaging reporting and data system atlas: BI-RADS. 4th ed. Washington, DC: American College of Radiology; 2003.

  10. 10.

    Chawla AJ, Tan TY, Tan GJ. Basal cell adenomas of the parotid gland: CT scan features. Eur J Radiol. 2006;58:260–5.

  11. 11.

    Kawata R, Yoshimura K, Lee K, Araki M, Takenaka H, Tsuji M. Basal cell adenoma of the parotid gland: a clinicopathological study of nine cases—basal cell adenoma versus pleomorphic adenoma and Warthin’s tumor. Eur Arch Otorhinolaryngol. 2010;267:779–83.

  12. 12.

    Shi L, Wang YX, Yu C, Zhao F, Kuang PD, Shao GL. CT and ultrasound features of basal cell adenoma of the parotid gland: a report of 22 cases with pathologic correlation. AJNR Am J Neuroradiol. 2012;33:434–8.

  13. 13.

    Nagao T, Sugano I, Ishida Y, Matsuzaki O, Konno A, Kondo Y, et al. Carcinoma in basal cell adenoma of the parotid gland. Pathol Res Pract. 1997;193:171–8.

  14. 14.

    Minami M, Tanioka H, Oyama K, Itai Y, Eguchi M, Yoshikawa K, et al. Warthin tumor of the parotid gland: MR-pathologic correlation. AJNR Am J Neuroradiol. 1993;14:209–14.

  15. 15.

    Aghaghazvini L, Salahshour F, Yazdani N, Sharifian H, Kooraki S, Pakravan M, et al. Dynamic contrast-enhanced MRI for differentiation of major salivary glands neoplasms, a 3-T MRI study. Dentomaxillofac Radiol. 2015;44:20140166.

  16. 16.

    Ikeda M, Motoori K, Hanazawa T, Nagai Y, Yamamoto S, Ueda T, et al. Warthin tumor of the parotid gland: diagnostic value of MR imaging with histopathologic correlation. AJNR Am J Neuroradiol. 2004;25:1256–62.

  17. 17.

    Hisatomi M, Asaumi J, Yanagi Y, Unetsubo T, Maki Y, Murakami J, et al. Diagnostic value of dynamic contrast-enhanced MRI in the salivary gland tumors. Oral Oncol. 2007;43:940–7.

  18. 18.

    Kojima I, Sakamoto M, Watanabe M, Takahashi S, Mugikura S, Shiga K, et al. Difficulty of the differential diagnosis of basal cell adenoma and basal cell adenocarcinoma of parotid gland by magnetic resonance imaging: case reports and literature review. Oral Radiol. 2012;28:24–31.

  19. 19.

    Christe A, Waldherr C, Hallett R, Zbaeren P, Thoeny H. MR imaging of parotid tumors: typical lesion characteristics in MR imaging improve discrimination between benign and malignant disease. AJNR Am J Neuroradiol. 2011;32:1202–7.

  20. 20.

    Takashima S, Wang J, Takayama F, Momose M, Matsushita T, Kawakami S, et al. Parotid masses: prediction of malignancy using magnetization transfer and MR imaging findings. AJR Am J Roentgenol. 2001;176:1577–84.

  21. 21.

    Yabuuchi H, Matsuo Y, Kamitani T, Setoguchi T, Okafuji T, Soeda H, et al. Parotid gland tumors: can addition of diffusion-weighted MR imaging to dynamic contrast-enhanced MR imaging improve diagnostic accuracy in characterization? Radiology. 2008;249:909–16.

  22. 22.

    Sakamoto M, Iikubo M, Kojima I, Sasano T, Mugikura S, Murata T, et al. Diagnostic value of capsule-like rim enhancement on magnetic resonance imaging for distinguishing malignant from benign parotid tumours. Int J Oral Maxillofac Surg. 2014;43:1035–41.

  23. 23.

    Ikeda K, Watanabe M, Oshima T, Nakabayashi S, Kudo T, Sawai T, et al. A case of basal cell adenocarcinoma of the parotid gland. Tohoku J Exp Med. 1998;186:51–9.

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Conflict of interest

Jie Tang, Ping Xie, Jian Mao, Weijun Peng, Zhengrong Zhou, and Kefu Liu declare that they have no conflict of interest.

Human rights statement and informed consent

All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2008. Institutional review board permission was obtained to review patient medical records, and the requirement for informed consent was waived.

Author information

Correspondence to Kefu Liu.

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Tang, J., Xie, P., Mao, J. et al. Findings of parotid basal cell adenoma on magnetic resonance imaging. Oral Radiol 32, 48–55 (2016).

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  • Parotid
  • Basal cell adenoma
  • MRI