Attention and working memory in patients with prolactinomas: a case-control study

Area of Science:

• Neuroendocrinology
• Cognitive Neuroscience
• Clinical Psychology

Background:

• Prolactinomas are the most common pituitary tumors, secreting excess prolactin.
• Elevated prolactin levels are linked to cognitive impairment, but specific attention deficits remain under-researched.
• Existing research lacks detailed neuropsychological evaluations of attention in prolactinoma patients.

Purpose of the Study:

• To investigate specific attention and working memory deficits in patients with prolactinoma.
• To assess the relationship between prolactin levels, tumor size, and cognitive performance.
• To determine the necessity of comprehensive neuropsychological testing in prolactinoma diagnosis.

Main Methods:

• A case-control study involving 27 patients with prolactinoma and 27 healthy controls.
• Utilized a comprehensive neuropsychological assessment battery for attention and working memory.
• Included tests such as the d2 Test of Attention, Color Trails Test (CTT-2), Tests of Everyday Attention, Digit Span, and Symbol Span.

Main Results:

• Prolactinoma patients exhibited slower information processing and reduced attention-switching abilities.
• Significant working memory disturbances were identified in patients compared to controls.
• Prolactin levels negatively correlated with attentional switching, spatial screening, and working memory scores, independent of tumor size.

Conclusions:

• Patients with prolactinoma demonstrate significant impairments in attention and working memory.
• Neuropsychological assessment should be integrated into the routine diagnostic process for prolactinoma.
• Cognitive deficits are linked to prolactin levels rather than tumor size in this patient group.