Report of two cases of fluorodeoxyglucose positron emission tomography/computed tomography appearance of hibernoma: A rare benign tumor
Here we describe a case of a 50-year-old male patient a diagnosed case of supraglottic cancer underwent a PET/CT scan to look for distant metastasis. He was clinically staged as T4N0M0. His PET/CT scan revealed a large hypermetabolic mass in the right supraglottis involving the right aryepiglottic fold, arytenoids, right true and false cord and eroding the thyroid cartilage. A hypermetabolic right retropharyngeal node was also noted. Apart from this, a hypermetabolic lesion was seen in the medial aspect of the right thigh [, MIP]. The axial images revealed a hypermetabolic (maxSUV 32.6), well-circumscribed ovoid mass with mild and heterogeneous enhancement in the right gracilis muscle, in the medial right thigh. The mass was predominantly of fat density (a little higher than subcutaneous fat) and showed prominent branching vessels within [Figure -]. On the clinical examination a painless, mobile mass was felt in the right medial thigh and the patient gave a history of this being present since many years (20 years). These findings and the history led to the diagnosis of a benign lipomatous tumor (hibernoma).