Left retromolar trigone cancer status post resection. Neck: There are postoperative findings related to left oral cavity region tumor resection, along with left mandible resection, left partial glossectomy, left partial pharyngectomy, and graft reconstruction. There is diffuse enlargement of the left trigeminal nerve in the infratemporal fossa along a length of approximately 3 cm, which is compatible with perineural tumor. There is extension tumor through foramen ovale into the left cavernous sinus, as well as perhaps slightly into the inferior left Meckel cave and posterior portion of the foramen rotundum. There is no gross tumor along the cisternal portion of the left trigeminal nerve. There is abnormal enhancement along the anterior aspect of the left petrous apex. There is a subcutaneous fluid collection overlying the posterolateral aspect of the graft, which measures up to approximately 5 cm. There are small fluid collections more inferiorly along the margins of the graft. Patchy areas of enhancement along the margins of the surgical bed are likely treatment-related and enhancement of the left masticator muscles is likely related to denervation. There is left tympanomastoid fluid. There is scattered inflammation of the right mastoid air cells, as well. There is no definite cervical lymphadenopathy. The paranasal sinuses are unremarkable.Brain: There are no intraparenchymal brain metastases. Please refer to the recent non-contrast brain MRI for additional details.
1. Postoperative findings related to left oral cavity region tumor resection with graft reconstruction with perineural tumor in the left infratemporal fossa and into the left cavernous sinus, as well as perhaps to a small extent into the inferior left Meckel cave and posterior portion of the foramen rotundum. 2. Fluid collection along the margins of the graft may represent seromas, infection, or fat necrosis, for example. 