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[Transient hypophosphatemia associated with hairy-cell leukemia]
Y Bar-Khayim1, N Haran, S Gurwicz
1Division of Nephrology, Kaplan Hospital, Rehovot.
Harefuah
|January 15, 1990
Summary
Severe hypophosphatemia in a hairy-cell leukemia patient resolved after splenectomy. This suggests rapidly dividing leukemic cells in the spleen excessively consumed phosphorus, causing low serum levels.
Area of Science:
- Hematology
- Oncology
- Biochemistry
Background:
- Hairy-cell leukemia is a rare B-cell malignancy often associated with splenomegaly.
- Hypophosphatemia can occur in various hematologic malignancies but its specific cause requires investigation.
- Splenomegaly in hairy-cell leukemia can lead to significant hematologic alterations.
Observation:
- A 43-year-old male patient presented with hairy-cell leukemia and pronounced splenomegaly.
- The patient developed severe hypophosphatemia.
- Serum phosphorus levels normalized immediately following a splenectomy.
Findings:
- Splenic tissue phosphorus levels were found to be significantly elevated.
- The resolution of hypophosphatemia post-splenectomy strongly correlated with the removal of the enlarged spleen.
- It is postulated that excessive phosphorus uptake by rapidly proliferating leukemic cells within the spleen caused the observed hypophosphatemia.
Implications:
- This case highlights a potential mechanism for hypophosphatemia in hairy-cell leukemia.
- Splenectomy may be considered in managing severe hypophosphatemia associated with splenomegaly in this condition.
- Further research into phosphorus metabolism in leukemic cells could offer novel therapeutic targets.