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Spontaneous cerebrospinal fluid (CSF) rhinorrhea associated with untreated prolactinomas is rare, which is in contrast to medical treatment-induced CSF rhinorrhea. Previous studies have suggested that cessation of drug administration should be the first line of treatment for prolactinoma with medically induced CSF rhinorrhea. On the other hand, there is no standard treatment strategy for prolactinoma with the development of spontaneous CSF rhinorrhea, because of its complicated pathology. Here, we report a case of giant invasive macroprolactinoma with spontaneous CSF rhinorrhea, and discuss the treatment strategy for this complicated condition with a review of the relevant literature. A previously healthy 39-year-old man presented with 1-year history of intermittent clear fluid nasal discharge with headache and vomiting. Magnetic resonance imaging showed a large parasellar mass with destruction of the skull base. This tumor was diagnosed as prolactinoma with hypopituitarism based on the results of hormone examinations. Tumor resection with skull base reconstruction in the endoscopic endonasal approach was performed because CSF rhinorrhea was aggravated by bromocriptine loading test and administration of dopamine agonist. Life-threatening bacterial meningitis occurred after surgery, which was cured with antibiotics along with resolution the CSF rhinorrhea. Careful consideration is necessary before applying standard first-line protocols with dopamine agonist administration in patients with prolactinoma, especially in cases with spontaneous CSF rhinorrhea. An appropriate treatment strategy should be planned according to the individual case, including factors such age, sex, pituitary function, tumor mass size, prolactin concentration, and condition of CSF leakage. Copyright © 2020 Elsevier Inc. All rights reserved.

Citation

Daishiro Abe, Toshihiro Ogiwara, Takuya Nakamura, Shunsuke Ichinose, Yu Fujii, Yoshiki Hanaoka, Kiyoshi Ito, Tetsuyoshi Horiuchi. Treatment Strategy for Giant Invasive Macroprolactinoma with Spontaneous Cerebrospinal Fluid Rhinorrhea: A Case Report and Literature Review. World neurosurgery. 2020 Dec;144:19-23

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PMID: 32853764

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