Abdul Sater et al., who reported a case of a 38-year-old male with succinate dehydrogenase subunit D (SDHD) gene mutation, suggested Gallium-DOTATATE positron emission tomography (PET) as an essential follow-up investigation for any patients with hereditary paragangliomas, as the gallbladder paraganglioma in this male lacked F-fluorodeoxyglucose (F-FDG) avidity but was intensely avid with Gallium-DOTATATE [6]. The gene discussed is SDHD; the disease is paraganglioma.