gallium-ga-68-dotatate and Soft-Tissue-Neoplasms

A 64-year-old man with a history of metastatic clear cell renal cell cancer was referred for progress Ga-DOTATATE PET/CT imaging. Ga-DOTATATE PET/CT imaging demonstrated increased DOTATATE uptake (SUVmax 13.8) in the left thigh localized to a soft tissue lesion. Cytopathology of the resected lesion was in keeping with a clear cell renal cell cancer metastasis. This case illustrates that Ga-DOTATATE accumulation in a soft tissue lesion can be due to a clear cell renal cell cancer metastasis.

Topics: Biological Transport; Carcinoma, Renal Cell; Humans; Kidney Neoplasms; Male; Middle Aged; Organometallic Compounds; Positron Emission Tomography Computed Tomography; Soft Tissue Neoplasms

Sixty six-year-old woman status post ileocecal resection for well-differentiated neuroendocrine tumor in the terminal ileum 7 years ago, who is on octreotide therapy for liver metastases. Ga DOTATATE PET/CT showed soft tissue masses with mildly increased radiotracer uptake in the bilateral subscapular/infrascapular regions. In retrospective image review, these soft tissue masses were first noted 7 years prior and have gradually increased in size over the years. Given the characteristic location and imaging findings, these masses are consistent with benign elastofibroma dorsi instead of metastasis.

Topics: Aged; Diagnosis, Differential; Female; Fibroma; Humans; Neuroendocrine Tumors; Organometallic Compounds; Positron Emission Tomography Computed Tomography; Radiopharmaceuticals; Soft Tissue Neoplasms

Topics: Abdominal Neoplasms; Feasibility Studies; Humans; Male; Middle Aged; Neoplasm Recurrence, Local; Organometallic Compounds; Paraganglioma; Positron-Emission Tomography; Radiopharmaceuticals; Soft Tissue Neoplasms