A Rare Case of Pituicytoma During Pregnancy.

Pituicytomas are rare benign sellar tumors that originate in the neurohypophysis. We report the first case of a pituicytoma during pregnancy, causing headaches and bilateral temporal visual field defects. A 32-year-old woman at 16 weeks of gestation was admitted to our hospital for headaches and progressively worsening visual impairment. Cranial magnetic resonance imaging (MRI) revealed a sellar lesion that was resected via a neuroendoscopic endonasal-transsphenoid approach. Pathology revealed a pituicytoma with positive progesterone receptor expression. After cerebrospinal fluid (CSF) leakage repair and anti-infective therapy, the patient recovered well and finally gave birth to a healthy child. This is the first case of pituicytoma during pregnancy reported. Pregnancy may have a contributing effect on the progression of progesterone receptor-positive pituicytomas. Surgical intervention, when performed with appropriate perioperative management, can effectively alleviate mass effects caused by pituicytomas in pregnant women while maintaining the safety of the fetus.