TO THE READERSHIP: An error appeared in the article by Law et al. (Law M, Wang R, Liu CSJ, et al: Value of pituitary gland MRI at 7 T in Cushing’s disease and relationship to inferior petrosal sinus sampling: case report. J Neurosurg [epub ahead of print March 23, 2018; DOI: 10.3171/2017.9.JNS171969]). The Disclosures section incorrectly stated that the authors reported no conflict of interest concerning the materials or methods used in their article or the findings specified in it. However, Dr. Law does have a conflict of interest to report. The updated disclosures are shown below. Dr. Law reports receiving research support and honoraria from Bracco Diagnostics. The article has been corrected online as of May 18, 2018.