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.

RATIONALE Collision tumor is a rare disease that represents the coexistence of two histologically distinct neoplasms in the same area without histological admixture or an intermediate cell population zone. To our best knowledge, 13 cases besides our 2 cases have been reported till now, and our report represents the first publication regarding a collision tumor composed of growth hormone (GH)-se...

BACKGROUND Ectopic pituitary adenoma was first described by Erdheim in 1909, about 100 cases have been reported in literature, to the best of our knowledge, an ectopic pituitary adenoma located in the parapharyngeal space has not been reported thus far. METHOD A 59-year-old woman presenting with a neck lump, which was painlessness and growing, was without any neurological disorders or endocri...