Disseminated bone marrow metastases of insular thyroid carcinoma detected by radioiodine whole-body scintigraphy.
case_report · Level V
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Abstract
We present 131I scintigraphic findings in a patient with insular carcinoma of the thyroid showing diffuse abnormal uptake throughout the skeleton. The scintigraphy closely resembled the pattern of [131I]MIBG distribution in children with bone marrow metastases of neuroblastoma. The extent of involvement was underestimated by bone scintigraphy and radiography. Insular carcinoma of the thyroid in the bone marrow was subsequently demonstrated by biopsy. The patient was treated with 242 mCi 131I given in two courses, which led to severe myelosuppression and died as a result of progressive disease and severe pancytopenia 10 mo after initial therapy.
Medical subject headings
- Bone Marrow Neoplasms
- Carcinoma
- Iodine Radioisotopes
- Thyroid Neoplasms