Search

Presacral anastomotic sinus is recognized as a complication of anastomotic leakage in patients with rectal cancer. Active inflammation in the anastomotic sinus can masquerade as pelvic recurrence of rectal cancer. We present a case of progressive inflammation in anastomotic sinus demonstrated by serial FDG PET/CT scans. Despite its benign nature, increased FDG uptake in this nonnegligible condition, which could lead to further detrimental complications including secondary cancer, may have clinical implications.

Cerebral vascular lesions are integral to the diagnosis of vascular parkinsonism (VP). The VP, also referred to as lower body parkinsonism, is frequently caused by subcortical white matter lesions, but lesions at any levels of the nigro-striato-thalamo-cortical pathway can also cause VP, thus giving rise to various symptoms other than gait disturbance. Previous dopamine transporter imaging studies using SPECT showed heterogeneous patterns suggesting diverse contributing lesions to VP. Here we present 3 cases of VP demonstrated by F-FP-CIT PET/CT, visualizing vascular lesions at different levels between the midbrain and motor cortex. Distinctive clinical manifestations of them recapitulate the pathogenesis of VP.

We report F-18 FDG PET/CT images of biopsy-proven intramuscular metastasis from primary uterine cervix cancer. A 70-year-old woman was admitted because of a mass in the left axilla. She was diagnosed with uterine cervix cancer and underwent total abdominal hysterectomy, bilateral salpingo-oophorectomy, and pelvic node dissection and received adjuvant chemotherapy and radiation therapy 9 years ago. Magnetic resonance imaging showed a large soft tissue mass in the intramuscular region of the left axilla. The mass showed intense F-18 FDG uptake with a central necrotic portion on F-18 FDG PET/CT. Hypermetabolic lymph nodes were also noted in the left axilla, interpectoral, and left supraclavicular areas. Additionally, several hypermetabolic nodules were noted in both lungs. The lesion in the left axilla was excised and the pathologic results were consistent with metastasis from uterine cervix cancer.

Bisphosphonates inhibit bone resorption, and are used to treat patients who have low bone mineral density. This treatment results in the development of growth arrest lines, which typically appear parallel sclerotic lines to the growth plate on radiographs. We describe the case of a 14-year-old boy with steroid-induced osteoporosis, who was treated by pamidronate. This patient exhibited linearly increased bilateral uptake in the shafts of his femora, tibiae, radii, and ulnae that were parallel to the growth plates. A simple radiograph corresponding bone scan demonstrated linear sclerotic lines at the same sites.