BIPSSBangladesh Institute of Peace and Security Studies
BIPSSBilateral Inferior Petrosal Sinus Sampling
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False-negative results in BIPSS may be attributed to anatomical venous malformations such as an atrophic inferior petrosal sinus (19).
False-positive results may occur in BIPSS when the serum cortisol levels are not high enough to suppress the corticotroph cells in cases of cyclic or mild CS and periodic hormonogenesis from ectopic sources (22,23).
Although the patient had an adenoma on the right side of the pituitary on MRI, the BIPSS revealed lateralization to the left side of the pituitary.