Non-Hodgkin's lymphoma of the thyroid gland occurring after treated Hodgkin's lymphoma.

Objective: To present a case report of the occurrence of non-Hodgkin's lymphoma in the thyroid gland of a patient who had previously undergone successful treatment of Hodgkin's lymphoma.

Methods: We describe pertinent historical features and current symptoms and laboratory findings in a 62-year-old man who had had successful treatment of Hodgkin's lymphoma 10 years previously and had been free of disease for a decade. We also review the related medical literature on the course of patients after therapy for Hodgkin's lymphoma.

Use of iodine-123 as a diagnostic tracer for neck and whole-body scanning in patients with well-differentiated thyroid cancer.

Objective: To determine whether 123 I can be used as a safe and effective alternative tracer to 131 I for imaging remnant tissue and for searching for metastatic lesions of well-differentiated thyroid cancer.

Methods: We studied a series of 16 patients (10 women and 6 men; 29 to 73 years of age) who had well-differentiated thyroid cancer and had undergone thyroidectomy and subsequent radioiodine treatment. Diagnostic 10 mCi (either preablation or postablation) were compared with the 5- to 7-day 131 I posttherapy scans (doses, 75 to 200 mCi).