Hello, Basically, there is tissue present that is not giving a normal reaction to the MRI. The words subtle and superficial indicate less of a change or less invasion rather than a dense mass or extensive area showing change. You indicate ulcerated tissue present which is inflamed or abnormal tissue. There are lymph nodes, less than one centimeter in size, that are showing a change. The location is identified around and behind the submandibular glands in the neck with level IB and II noted. Identification of lymphatic drainage or metastases can help locate a tumor. The study indicates the location to be on side of your tongue. More information concerning the tissue requires a pathological study such as a biopsy. Tumors when removed are further evaluated with pathological studies. This will identify malignant and non-malignant tumors of the oral cavity. MRI study for the evaluation of squamous cell carcinoma is the primary concern. Other lesions to include in a possible diagnosis include lymphoma, adenoma, sarcoma, salivary gland tumor, abnormal adenoidal tissue or floor of the mouth tissue. Thank you for your inquiry. Your doctor will review your MRI study and clinical evaluation to advise you on your treatment.