Adenoid cystic carcinoma is a slowly growing malignant tumor with high local recurrence, perineural and vascular invasion. This tumor might arise from the glands of upper respiratory tract and oral cavity (eg, salivary or serous or mucous). Here we report the case of a 65-year-old woman who was referred to our unit for left retro-auricular radiating pain with trigger points and frontal headache since 6 months. There was no involvement of cranial nerves. Imaging screening using MRI, Positron emission tomography with 2-[fluorine-18] fluoro-2-deoxy-D-glucose, Gallium-68 DOTA-Phe1-Tyr3-Octreotide (68Ga DOTATOC) Positron emission tomography-CT suggested a suspicion of schwannoma or paraganglioma of the jugular foramen. However, the CT-guided biopsy revealed presence of adenoid cystic carcinoma. These warrants performing mandatory histological analysis combined with imaging screening suspicion of schwannoma or paraganglioma.
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| http://dx.doi.org/10.1016/j.radcr.2022.04.046 | DOI Listing |
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- Adenoid cystic carcinomas (AdCC) of salivary gland origin are primarily defined by the presence of specific gene fusions, notably MYB::NFIB and MYBL1::NFIB, with sinonasal AdCC being particularly aggressive and lacking effective treatments.
- Researchers conducted an extensive analysis of 88 sinonasal AdCC cases using various techniques like NGS and FISH to identify gene fusions and mutations, finding that the majority harbored canonical fusions while some had noncanonical ones, with a few tumors showing no fusions at all.
- Mutational analysis revealed that about 68% of AdCCs tested (21 out of 31) had mutations in key oncogenes, highlighting potential areas for targeted
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