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 56,091 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

We report a case of a culture-proven intrasellar Candida albicans abscess. A 36-year-old woman presented with a history of headaches, menstrual irregularities, and mild symptoms of diabetes insipidus. She was neurologically intact at the time of a transsphenoidal surgery for a presumed pituitary adenoma. An extensive work-up revealed that although the patient was seronegative for human immunodeficiency virus, she was immunocompromised with a T-cell dysfunction. Fungal abscesses of the pituitary gland have rarely been reported. This is the first documented case of a patient who is seronegative for human immunodeficiency virus who becomes infected by an ordinarily innocuous fungus, Candida albicans.
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PMID:Candidal pituitary abscess: case report. 779 64

A retrospective analysis was performed to study the fluid and sodium status of patients undergoing transsphenoidal surgery (TS) for Cushing's disease. We evaluated the time of onset, duration, and relative incidence of isolated hyponatremia and identified possible factors associated with it. Of 58 patients that underwent TS over 1 yr, 52 without postoperative diabetes insipidus or volume depletion were studied. Isolated hyponatremia after TS for Cushing's disease occurred in 21%, and symptomatic hyponatremia (plasma sodium, < or = 125 mmol/L) with new onset headache, nausea, and emesis occurred in 7.0% of all operated. These later patients escaped monitoring and intervention for 24 h. The development of hyponatremia began early in the postoperative period and progressed slowly over 7 days. Maximum antidiuresis occurred on postoperative day 7. Vasopressin levels measured in two patients while hypoosmolar suggested that unregulated vasopressin release contributed to the hyponatremia. Cortisol levels, glucocorticoid replacement, and pituitary adenoma size were similar in normonatremic and hyponatremic patients. Patients combining a history of an estrogenic milieu and documented posterior pituitary trauma at surgery experienced lower nadir plasma sodium. All hyponatremic patients were fluid restricted, and none developed progressive neurological symptoms, morbidity, or mortality. We speculate that the mild degree and slow rate of development of hyponatremia and/or active monitoring and intervention contributed to the good outcome.
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PMID:Isolated hyponatremia after transsphenoidal pituitary surgery. 782 44

Anterior pituitary tumors account for nearly 18% of all intracranial tumors. Pituitary adenomas that cause hypersecretion of growth hormone lead to acromegaly in adults. Patients with acromegaly may present unique problems for the anesthetist because of the overgrowth of airway soft tissues; a difficult mask ventilation and challenging intubation can be expected. A careful preoperative assessment of the patient's airway is essential, and an awake oral or fiberoptic bronchoscopy may be necessary. Postoperatively, these patients are at risk for developing airway problems and diabetes insipidus; therefore, they warrant careful observation. A 42-year-old, 75-kg, ASA physical status III, white male presented 8 months after suffering a head injury in which he was knocked unconscious for approximately 3 minutes. He began experiencing severe headaches, visual changes, and a marked increase in the size of his hands and feet. Four months before admission, he underwent bilateral carpal tunnel repairs. The patient was diagnosed with acromegaly after an extensive endocrine and neurosurgical evaluation. This is a case report of a patient with acromegaly who underwent an elective transsphenoidal hypophysectomy.
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PMID:Acromegaly and transsphenoidal hypophysectomy: a case report. 808 20

Nine cases of symptomatic Rathke's cleft cyst are reported. Their most frequent signs and symptoms included headache, chiasmal syndrome and hypopituitarism, while one of the cases developed a sudden onset of headache and vomiting following diabetes insipidus. Endocrinological findings showed a decreased ACTH, gonadotropin and growth hormone more frequently while there were 2 cases of hyperprolactinemia and 1 case of diabetes insipidus. In a neuroradiological examination, a plain skull X-ray showed 5 cases of ballooning of the sella turcica, and a CT scan demonstrated a low to high density of the cyst and 2 cases of marginal enhancement of the cyst. MRI mostly demonstrated a well delineated mass at the sella extending mostly into the suprasellar region and a low to high intensity of the cyst in the T1-weighted image. Two cases were marginally enhanced after gadolinium DTPA administration. The pathological examination, done on 6 cases, showed either single or multiple layers of the epithelium which were mostly ciliated. The epithelium was positive in PAS and Alcian blue in all cases and a histochemical examination showed 3 cases to be positive in EMA and 2 cases positive in CEA. A resection of the cyst wall and an opening of the cyst is thus recommended in symptomatic cases. Therefore, the transsphenoidal approach should be the choice of treatment in an intra- and suprasellar extension of the cysts with sellar enlargement.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:[Symptomatic Rathke's cleft cyst: a clinicopathologic study of 9 cases]. 816 47

A 60-year-old woman was admitted to our hospital for surgical treatment of the left inguinal hernia. She had suffered from diabetes insipidus for ten years, and hormonal study revealed low plasma level of vasopressin. She has been taking nasally desmopressin acetate 5 micrograms twice a day and urinary output has been well controlled around 1200-1400 ml.day-1. CT-scan showed empty sella without any pituitary tumors. There were no evidences of increased intracranial pressure and neurological deficit. Following nasal instillation of desmopressin acetate 5 micrograms one hour before anesthesia, spinal anesthesia was performed with tetracaine 10 mg. Cephalad sensory block assessed by pinprick spread to T6 within 10 minutes. Systolic blood pressure gradually decreased from 120 to 90 mmHg, although no vasoconstrictors were needed. Arterial blood pressure was stable during the surgery. The operation lasted 80 minutes with 650 ml of fluid replacement, blood loss of 50 g and urinary output of 25 ml. She had no postspinal headache nor neurological deficit after surgery. Empty sella syndrome associated with diabetes insipidus is rare. Low spinal anesthesia can be performed safely whenever there is no evidence of increased intracranial pressure, although care should be taken for perioperative fluid and circulatory management.
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PMID:[Spinal anesthesia for empty sella syndrome associated with diabetes insipidus--a case report]. 823 Jul 30

Rathke's cleft cyst is one of many kinds of pituitary non-adenomatous tumors. Rathke's cleft cysts were evidenced by surgery in 7 cases from 7 to 87 years old. After the era of CT scan and MRI some cases were found incidentally after the head injury. Symptoms and signs of cases with Rathke's cleft cyst were headache, visual disturbances and/or diabetes insipidus. The lesion was high density on plain CT images and showed no-enhancement. The lesion on 2/3 cases showed high intensity on T1 weighted images and the others low. The lesion in half showed iso-intensity on T2 weighted images and in other half high intensity. The stalk was deviated to lateral side in a case. Half lesion was in the sella and half was in supra-sellar region. The cyst was present in both intra-sellar and supra-sellar region in a case and showed a dumb-bell type. There are three approaches for removal of Rathke's cleft cyst. Hardy's transnasal approach was used on intrasellar type. The trans-Sylvian or anterior trans-interhemispheric approach was used on supra-sellar type. Content in the cyst was evacuated totally, and the cyst wall was removed as much as possible. However, the stalk should be protected from damage.
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PMID:[Pituitary non adenomatous tumor (Rathke's cleft cyst)]. 825 44

A case of sinus thrombosis occurring during combination chemotherapy with CDDP and VP-16 (PE) for a suprasellar germ-cell tumor is presented. A 5-year-old girl developed polyuria, polydipsia and headache in April, 1991 and became unconscious on May 10, 1991, when MRI and CT demonstrated a suprasellar tumor and marked hydrocephalus. After a ventriculo-peritoneal shunt operation, radiotherapy and two courses of PE therapy were carried out. During the second course of PE therapy, diabetes insipidus became quite difficult to control and severe hypovolemic hypernatremia developed. While it was being treated, the patient developed a clonic convulsion of her left extremities and visual disturbance. CT scan demonstrated a right parietal hemorrhagic infarction and IV-DSA suggested thrombosis of the superior sagittal sinus. Laboratory data disclosed DIC. The main cause of sinus thrombosis in this patient was considered severe dehydration. It is also possible that cisplatin and steroid played a role. In addition to these, dysfunction of hypothalamus, which is one of the regulatory centers of the plasma concentration of factor VIII, may have contributed to the acceleration of blood coagulation. This case re-emphasized the importance of preventing dehydration and monitoring the blood coagulation fibrinolytic system during PE therapy in patients with a suprasellar germ-cell tumor accompanied with diabetes insipidus.
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PMID:[Sinus thrombosis during CDDP and VP-16 (PE) therapy for suprasellar germ-cell tumor: case report]. 825 77

Rathke's cleft cysts (RCCs) are considered to arise from the remnants of Rathke's pouch, an invagination of the stomodeum. They are classically described as benign epithelium lined intrasellar cysts containing mucoid material, and also found in 2-33% of routine autopsy series. The most common presenting symptoms are visual impairment, hypothalamic dysfunction, hypopituitarism and headache. Diabetes insipidus has been described in patients with RCC. Very few cases presented with only diabetes insipidus in adults. To our knowledge, our patient is the first case of RCC presenting with only diabetes insipidus in childhood. A 9-year-old girl presented with diabetes insipidus. The physical, neurological and endocrinological examinations were normal, except for diabetes insipidus. Magnetic resonance imaging scan revealed a hyperintense lesion with supra sellar extension in the posterior pituitary both on T1 and T2 weighted images. Subtotal excision of RCC was performed via transsphenoidal surgery. However, diabetes insipidus persisted after the surgery.
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PMID:A case of Rathke's cleft cyst presenting with diabetes insipidus. 859 99

A 16-year-old male complained of a headache and a high fever followed by polyuria. The endocrinological studies showed he had hypopituitarism and central diabetes insipidus, and magnetic resonance imaging (MRI) revealed a pituitary mass. Diabetes insipidus gradually improved and hydrocortisone treatment was begun at three months after onset, but a month later painless thyroiditis developed. An MRI demonstrated a spontaneous shrinkage of the pituitary mass nine months after onset. Lymphocytic hypophysitis followed by painless thyroiditis was the most probable diagnosis, although it is very uncommon especially among men.
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PMID:Hypopituitarism associated with transient diabetes insipidus followed by an episode of painless thyroiditis in a young man. 868 Jan 2

Desmopressin is a commonly used, well-tolerated agent for the treatment of primary nocturnal enuresis and central diabetes insipidus. Intranasal desmopressin provides symptomatic relief with few serious complications. A 29-year-old woman with a long history of primary nocturnal enuresis began treatment with intranasal desmopressin. Although the enuresis ceased, she developed throbbing headaches, nausea, vomiting, paresthesia, lethargy, fatigue, and altered mental status over the next 7 days. When she came to the emergency room her sodium concentration was 127 mmol/L. The history of desmopressin use was not obtained at that time. She was treated with intravenous fluids and discharged. The symptoms returned and worsened over the next 4 days, and she returned to the emergency room stuporous. A repeat sodium was 124 mmol/L, and she was admitted. The history of desmopressin use was still not available. Medical evaluations included computerized tomography, lumbar puncture, complete blood counts, serum chemistries, and serologies. The next morning the woman was improved and informed clinicians of her desmopressin use. Without other causes for the hyponatremia, she was diagnosed with the syndrome of inappropriate antidiuretic hormone, presumably caused by desmopressin. Within 24 hours of fluid restriction and cessation of desmopressin, her symptoms and hyponatremia resolved. A review of the literature found 11 children and 2 adults in whom intranasal desmopressin was associated with hyponatremia, all of whom experienced seizures or altered mental status. Our patient illustrates the importance of early recognition and treatment of hyponatremia before the onset of seizures. When vague symptoms develop during desmopressin therapy, hyponatremia must be considered as part of the differential diagnosis. It may also be prudent to screen for electrolyte abnormalities in patients taking this agent to prevent serious iatrogenic complications.
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PMID:Intranasal desmopressin-induced hyponatremia. 888 98


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