Rhabdomyosarcoma laboratory findings
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Laboratory Findings
When rhabdomyosarcoma is suspected, tests will be run for blood, muscle, and marrow.
Immunohistochemical marker
- Diagnosis of rhabdomyosarcoma depends on recognition of differentiation toward skeletal muscle cells.
- The protein myo D1 is a immature protein normally found in developing skeletal muscle cells which disappears after the muscle matures and becomes innervated by a nerve.
- Thus, myo D1 is not found in normal skeletal muscle and serves as a useful immunohistochemical marker of rhabdomyosarcoma.