Journal
MEDICINE
Volume 100, Issue 49, Pages -Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/MD.0000000000028098
Keywords
adenoid cystic carcinoma; distant metastasis; follow-up; lung metastasis; salivary gland tumor; sublingual gland
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Funding
- Japan Society for the Promotion of Science, Japan [18K09719]
- Grants-in-Aid for Scientific Research [18K09719] Funding Source: KAKEN
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ACC is a rare malignant tumor that can develop distant metastases even with favorable local control. Distant metastases of ACC can occur after a long time interval without local recurrence. Patients who undergo primary treatment for ACC should have a long-term, strict follow-up plan.
Rationale: Adenoid cystic carcinoma (ACC) is a rare malignant tumor that primarily occurs in the salivary glands. Distant metastases can develop despite favorable local control. Moreover, distant metastasis of ACC can occur after a long time interval without local recurrence. We report the first case of ACC of the sublingual gland that developed lung metastasis 20 years after primary treatment. Patient concerns: A 52-year-old man was referred to our department with a 1-year history of painful swelling on the right oral floor. Diagnosis: An incisional biopsy was performed, and histopathological examination revealed malignancy. Interventions: Surgical excision of the right oral floor and right supra-omohyoid neck dissection with postoperative chemoradiation therapy were performed, and ACC of the sublingual gland was diagnosed. Left pulmonary metastasis was detected 20 years after the primary treatment. Metastasectomy was performed; however, subsequently, skin and bone metastases developed. Outcomes: After receiving palliative care, the patient died of multiple organ failure. Lessons: As late distant metastasis of salivary ACC can develop, patients who undergo primary treatment need a long-term, strict follow-up plan even if locoregional control is favorable.
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