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Transcervical thymic biopsy in children with immunodeficiency

To more fully characterize immunodeficiency states, thymic biopsies add useful information. The transcervical technique is simple and does not require a sternal-splitting procedure. The thymus was much larger than anticipated in 12 of 12 cases so far biopsied, including six cases of severe combined immunodeficiency. A sample of 2-3 gm was readily removed. A slight wound infection was encountered in only one instance; no generalized septic episode resulted.

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