The primary empty Sella: An endocrine study on 36 cases

Introduction: The term primary empty sella (PES) makes reference to the herniation of the subarachnoid space within the sella turcica in patients with no history of pituitary tumor, surgery or radiotherapy. Materials and Methods: We studied 36 patients; 27 females and 9 males. The mean age at diagnosis was 50, 4 years [21-80 years]. Most diagnoses were made by magnetic resonance imaging (n = 32). The anterior pituitary function was evaluated by basal hormonal measurements. Then, we had compared two groups of patients: G1(n=17), who had a pituitary disorder, and G2 (n=10), patients without hormonal disease, in order to determine risk factors for endocrine dysregulation in PES. Results: The reasons for ordering pituitary scans were: headaches (65%), visual disturbances (32%) and neurological symptoms in 8% of cases. Sixty-six point five per cent of women were multiparous. Diabetes, obesity and hypertension were found in 19.45 %, 11 % and 19.45 % of the studied population respectively. Hyperprolactinemia was present in 17.24 % of patients. Fifty-five percent of our patients had some degree of hypopituitarism. We didn’t find any correlation in our study, between pituitary insufficiency and age, gender, weight, parity nor post-partum hemorrhage. Failure of lactation was significantly associated with a hormonal disorder. On the other hand, headache was negatively correlated with hormonal effects in PES. Conclusion: PES was most commonly found in middle-aged multiparous women. In most patients, PES is a heterogeneous condition that ranges from hypopituitarism to various degrees of isolated GH deficiency, and which needs careful endocrine assessment, treatment and follow-up.

RARE-13. PRIMARY EMPTY SELLA SYNDROME AND PSEUDO-TUMOR CEREBERI: CORRELATION OF ASSOCIATION AND SURGICAL PLAN

Introduction Management of primary empty sella syndrome (ESS) is generally remaining a neurosurgical challenge due to lack of a well standardized approach. Pseudo-tumor cereberi (Benign or idiopathic intracranial hypertension) is commonly associated condition. In this study, we have demonstrated the relationship and surgical plan and outcome of such cases. Patients and Methods: We retrospectively studied 24 patients with primary empty sella syndrome (ESS) for two years who were diagnosed radiologically as ESS. Fundus and other ophthalmological examinations were done. Lumbar puncture and cerebrospinal fluid (CSF) manometer were evaluated in those with papilledema. All patients’ data were collected and analyzed. Results Basically, 24 patients (18 females and 6 males) were radiologically diagnosed as EES. 13 females and only one male were having symptoms of BIH. 17 patients (70.83%) had headache as the first presentation. Second most common presentation in our study was visual in 14 patients (58.3%). Two patients (8.3%) had pituitary hypersecretion namely; growth and prolactin hormones. In those (58.3%) confirmed to have BIH Theco-peritoneal shunts were inserted. Incidental cases (29.17%) without symptoms were followed up. Conclusion Although (ESS) is a well-known radiological hallmark for BIH, in our study not all patients had BIH. Interestingly, pituitary hyperfunction may be the first presentation in some rare cases. Generally, natural history of that entity was benign. Frequent follow-up by neurosurgeons and increased awareness of associations are advised. We believe a more prospective large number cohort is important to outline the natural history.

Pituitary volume in patients with Primary Empty Sella and clinical relevance to pituitary hormone secretion: A retrospective single center study

Background: According to neuroradiological findings, empty sella seems to be deprived of pituitary tissue in sella turcica. Changing size of the pituitary volume is closely related to the occurrence of primary empty sella. The aim of the study is to determine pituitary dysfunction in patients with partial or total primary empty sella and the significance of pituitary volume measurements in these patients. Methods: This study was designed retrospectively. 67 patients (55 females, 12 males) diagnosed with primary empty sella syndrome between the years of 2015-2019 were included in the study. Patients were divided into two groups: partial (PES) and total (TES) empty sella by magnetic resonance imaging (MRI). Basal anterior pituitary and its hormones were assessed. We also included 26 healthy control subjects (19 females, 7 males) to compare the differences in pituitary volumes. Volumes were measured by using Osirix Dicom Viewer ( Pixmeo SARL, Geneve, Swiss) in 3.0 Tesla scanner MRI. Results: 82.1% (n=55) of all patients were PES and the others were (n=12) TES. Hypopituitarism, known as one or more pituitary hormones deficiency, was found in 12 patients (17.9%). While 9 of them had total PES, the others had partial PES. Secondary adrenal insufficiency and gonadotropin deficiency were more prevalent in patients with TES. Mean volume measurements of patients with TES, PES and healthy subjects were 0.23±0.17, 0.35±0.15, 0.54±0.17 cm3, respectively. Except for IGF1 values (p=0.026), there was not any significant correlation found between the anterior pituitary hormones and volume measurements. Conclusion: Although volume measurement has helped in the diagnosis of pituitary empty sella (partial or total), it does not seem to have any significant correlation with pituitary secretory function.

PES Syndrome Presenting as Severe Hyponatremia in an Asymptomatic Septuagenarian

Background. Hyponatremia is commonly seen in hospitalized patients. In euvolemic individuals, syndrome of inappropriate antidiuretic hormone secretion (SIADH) is a common differential. However, before establishing a diagnosis of SIADH, it is imperative to evaluate for hypocortisolism and hypothyroidism. The finding of endocrine abnormalities determined to be of pituitary origin should prompt evaluation by brain MRI. Furthermore, primary empty sella (PES) is commonly seen as an incidental neuroradiological finding. However, PES in association with endocrine abnormalities is recognized as a separate entity called primary empty sella syndrome (PESS). Case Presentation. We report the case of a 71-year-old male sans neurological symptoms who presented to us with severe hyponatremia in whom we used a stepwise approach which led us to the diagnosis of PESS. This methodical approach was crucial for timely correction of the endocrine abnormalities which in turn rectified hyponatremia. Intriguingly, the presence of an ectopic pituitary which is a very rare entity and the sudden manifestation of his underlying endocrine deficiencies in the 8th decade of life make this clinical scenario highly unusual. Conclusion. Clinicians should be aware that absence of an orderly approach to workup presumed SIADH or an assumption of PES (instead of PESS) could both lead to serious consequences in the face of missed endocrine deficiencies.