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MRI Negative for MIA Comparison in IPBR in Patients in Whom IPSS Test Was Done and Was Positive vs Negativea,b
| MRI Negative | IPBR | Total | |
|---|---|---|---|
| No | Yes | ||
| IPSS positive | 1 (6.25) | 15 (93.75) | 16 |
| IPSS negative | 3 (100) | 0 (0) | 3 |
| Total | 4 | 15 | 19 |
IPBR, immediate postoperative biochemical remission; IPSS, inferior petrosal sinus sampling; MIA, microadenoma.
Patients with a negative MRI had a significantly greater incidence of IPBR when the IPSS test was positive, P = .004.
