PURPOSE Orbital invasion of pituitary tumors is rare and usually accompanied by optic nerve head pallor and visual loss. We describe a case of unilateral massive orbital invasion by a recurrent pituitary tumor with preserved visual acuity and normal optic nerve appearance. METHODS Case report. RESULTS Progressive proptosis developed 15 years after transphenoidal removal of a pituitary tumor...

PURPOSE This study was conducted to evaluate the role of tumor volume in excision of pituitary adenomas. MATERIALS AND METHODS A total of 20 patients with pituitary adenoma underwent surgical excision of the tumor by endonasal transsphenoidal approach. RESULTS A preoperative tumor volume of more than 5 mL is associated with a 90.90% probability of residual tumor (P < .05, statistically sign...

BACKGROUND AND IMPORTANCE Collision tumors are the simultaneous occurrence of more than one type of neoplasm within an anatomic space. In the pituitary sella, collision tumors are exceedingly rare, and not much is known about their etiology and prognosis. CLINICAL PRESENTATION A 74-year-old man presented with a concomitant primary pituitary lymphoma (diffuse large B-cell non-Hodgkin's lymphom...

We report a case of pituitary adenoma with normal hormone levels in 34-year-old female. She presented to OP headache, milky discharge from nipples and secondary amenorrhea transient loss vision. Patient had hyperprolactinemia all other hormones. MRI revealed space occupying lesion sellar suprasellar region. Neurological consultation suggested Rathke’s cyst/ craniopharyngioma/ macroadenoma. Exci...

pathological hormone secretion, the clinical presentation is determined by localization of tumor. Common symptoms include headache and visual field defects. This review addresses pathology aspects diagnosis, conservative treatment, methods radiation therapy. Drug therapy endocrine-inactive adenomas based on presence receptors for somatostatin dopamine in pituitary adenoma cells. Data stereotact...

BACKGROUND Pituitary adenoma is one of the most common intracranial neoplasms, and its primary treatment is endoscopic endonasal transsphenoidal tumorectomy. Postoperative hypokalemia in these patients is a common complication, and is associated with morbidity and mortality. This study aimed to analyze the etiopathology of postoperative hypokalemia in pituitary adenomas after endoscopic transsp...

Pituitary adenomas account for approximately 10% of intracranial tumors and 5% are locally invasive. Cavernous sinus invasion by pituitary tumors presents mostly with cranial nerve palsies, especially involving the third, fourth and sixth cranial nerves, which is well documented in the literature. However, an isolated complaint of trigeminal neuralgia due to pituitary adenoma is an extremely ra...

Although cases of pituitary adenomas containing amyloid deposits have been described in the literature, to our knowledge this is the first report to describe MR imaging characteristics of a pituitary adenoma containing almost entirely amyloid tissue.