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Adenoid Cystic Carcinoma - Radiology

last modified on: Mon, 07/31/2023 - 09:05

  •  Older literature may refer to this tumor as a cylindroma
  •  Adenoid Cystic Carcinoma is a malignant salivary gland tumor thought to arise from the peripheral salivary ducts
  •  Most commonly found superficially with slow growth characteristics and a propensity for perineural involvment and recurrence
  •  Lesions generally enhance with contrast-enhanced CT imaging
  •  MR findings generally show a low to moderate signal on T1 weighting; moderate signal on T2; and clear enhancement on T1 post-contrast
  •  Perineural involvement is common
  • Accounts for 10% of salivary gland malignancies and 1% of head and neck malignancies (Saleh 2023)
  • Metastatic spread more commonly to bones and lungs as opposed to lymph nodes
  • Follow-up is generally practiced due to long-term recurrences that may present distally

References:

Saleh E, Ukwas A. Adenoid Cystic Carcinoma of Salivary Glands: A Ten-Year Review and an Assessment of the Current Management, Surgery, Radiotherapy, and Chemotherapy. Int J Otolaryngol. 2023 Apr 29;2023:7401458. doi: 10.1155/2023/7401458. PMID: 37159817; PMCID: PMC10163974.