Reconversion of bone marrow in Gaucher disease treated with enzyme therapy documented by MR

Pediatric Radiology
J W AllisonJ M Bell

Abstract

Skeletal complications are responsible for significant morbidity in Gaucher patients. Plain radiographs have been unreliable in assessing bone marrow infiltration and activity. A way to assess bone marrow improvement is needed during enzyme therapy. The purpose of this paper is to assess the usefulness of MR in following improvement of abnormal bone marrow in Gaucher patients on enzyme therapy. Three patients aged 2, 7, and 24 years underwent serial MR scans of the lower extremities before and during treatment with Alglucerase (two patients) and Imiglucerase (one patient). T1-weighted, T2-weighted, STIR and FSE T2-weighted images were utilized. Two patients were imaged after 16 months of therapy, and one patient was imaged after 6 months of therapy. All patients had improvement in marrow signal consistent with partial reconversion to fatty marrow during treatment. The findings were more marked after prolonged therapy. T1-weighted images demonstrated findings most clearly. MR consistently showed improvement in marrow signal in Gaucher patients on enzyme therapy. As smaller doses of enzyme therapy are the trend, MR can be utilized to determine if therapy is effecting a change in the bone marrow.

Citations

Jan 2, 2003·Genetics in Medicine : Official Journal of the American College of Medical Genetics·Karen A GrinzaidLouis J Elsas
May 31, 2002·The British Journal of Radiology·B BembiR J Wenstrup
May 31, 2002·The British Journal of Radiology·L W PollN J Weinreb
Jul 21, 2004·Clinical Radiology·K FosterK Johnson
Mar 18, 2006·Clinical Genetics·H J MankinG M Pastores
Mar 15, 2005·Acta Orthopaedica Scandinavica·Menachem ItzchakiDeborah Elstein

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