Context: Lymphocytic anterior @entity4611 in association with a @entity977 was reported previously. In rare instance, inflammatory infiltration was confined to @entity652 tissue itself, excluding anterior pituitary. Case: The @entity1 - a 27-year-old male - presented with @entity227 . Further examination revealed a pituitary mass with suprasellar extension. Hormonal evaluation indicated mild @entity4089 (42 ng/ml, normal < 19). After transsphenoidal resection, a @entity977 showing cytoplasmic immunoreactivity to prolactin was identified. Dense and @entity2617 was seen within the @entity5 . At 15th month, a second transsphenoidal operation was necessary because of rapid development of @entity227 and @entity10 . Excised surgical specimen consistent with previously resected @entity652 showed @entity2617 composed of B and T cells within the @entity652 tissue again. Conclusion: Presence of dense, @entity4611 -like lymphocytic infiltration within @entity977 tissue obtained by two consecutive operations may reflect an host-mediated immune reaction to @entity5 . This rare finding could be challenging in terms of differential diagnosis and follow-up course.

@entity4611 with persisting dense lymphocytic infiltration in a young male XXXX .

@entity1 :: ('9606', 'Species') :: ['patient'] @entity4089 :: ('MESH:D006966', 'Disease') :: ['hyperprolactinemia'] @entity227 :: ('MESH:D014786', 'Disease') :: ['visual compromise', 'visual field defect'] @entity2617 :: ('MESH:D017254', 'Disease') :: ['diffuse lymphocytic infiltration'] @entity5 :: ('MESH:D009369', 'Disease') :: ['tumor'] @entity4611 :: ('MESH:D010900', 'Disease') :: ['hypophysitis'] @entity10 :: ('MESH:D006261', 'Disease') :: ['headache'] @entity977 :: ('MESH:D010911', 'Disease') :: ['pituitary adenoma'] @entity652 :: ('MESH:D000236', 'Disease') :: ['adenoma']
@entity1 :: (9606,Species) :: ['patient']
