Romanian Journal of Medical Practice (Dec 2020)
When neurosurgery is not an option…
Abstract
Introduction. As opposed to secreting tumours, non-functioning pituitary adenomas are usually diagnosed at a later stage, when they are large enough to cause symptoms due to mass effect rather than because their associated endocrine dysfunction. We aim to introduce a case report with limited therapy options. Case presentation. We present the case of a 69 year-old male patient with a history of stroke, atrial fibrillation and type 2 diabetes, who was initially admitted to the neurology department three years ago for frontal headaches and visual disturbances. The MRI (magnetic resonance imaging) exam revealed a 15.4/26.7/19.5 mm sellar mass, with suprasellar and parasellar extension, minimal optic chiasm compression and pituitary stalk deviation. Initial pituitary hormone profile showed central hypogonadism and mild hyperprolactinemia. The patient underwent neurosurgery evaluation but at that point transsphenoidal surgery was contraindicated due to severe cardiovascular comorbidities and the patient was referred to the endocrinology department for further follow-up, where he presented a year later, after worsening of symptoms. The MRI revealed tumour enlargement (18.5/28/24.6 mm) and stationary hormonal profile. The diagnosis of nonfunctioning pituitary macroadenoma was once again confirmed, cabergoline was initiated as adjuvant therapy since surgery was still contraindicated because high cardiovascular risk. Stereotactic radiation was not an option due to tumour proximity to the optic chiasm, therefore the patient underwent conventional radiotherapy. Evaluation after 3 months showed stationary clinical picture while MRI scan 3 months revealed a mild tumour growth (4 mm in all diameters). Further cabergoline therapy 2 mg/week was prescribed and the patient needs carefull monitorization for worsening of symptoms and hypopituitarism. Conclusion. Surgery is the mainstay of therapy in case of large nonfunctioning pituitary macroadenomas. If contraindicated, the available options include radiotherapy and medical therapy like cabergoline, with varying results, mostly suboptimal.
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