Abstract:
INTRODUCTION:Clinical presentations of prolactinomas are quite different between genders. In comparison with women's prolactinoma, those in men showed predominance of large tumors with high prolactin (PRL) levels. This preponderance could be attributed to a greater proliferative potential of the tumors. Differences in magnetic resonance imaging (MRI) signal at diagnosis have not been yet clearly evaluated. METHODS:We conduct a retrospective study comparing MRI signal intensity (SI) on T2-weighted images (T2-WI) between 41 men and 41 women to investigate whether or not men prolactinoma present specific features. RESULTS:In addition to the size of the adenoma and PRL levels (P < 0001), prolactinomas in men also exhibit differences from those in women in signal on T2-WI on MRI (P < 0001). Women's prolactinomas are mostly of high SI on T2-WI while men's prolactinomas exhibit a more heterogeneous pattern of SI on T2-WI. Prolactinomas presenting with low SI on T2-WI are almost exclusively encountered in men. CONCLUSIONS:Presence of T2-WI hypointensities in pituitary adenoma can be predictive of a different subtype of prolactinoma almost encountered in men and possibly translate the presence of spherical amyloid deposits, in agreement with the literature.
journal_name
Neuroradiologyjournal_title
Neuroradiologyauthors
Kreutz J,Vroonen L,Cattin F,Petrossians P,Thiry A,Rostomyan L,Tshibanda L,Beckers A,Bonneville JFdoi
10.1007/s00234-015-1519-3subject
Has Abstractpub_date
2015-07-01 00:00:00pages
679-84issue
7eissn
0028-3940issn
1432-1920journal_volume
57pub_type
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