A Comprehensive Review of Empty Sella and Empty Sella Syndrome.

OBJECTIVE: Incidental radiographic findings of an empty sella are prevalent in up to 35% of the general population. While empty sella was initially considered clinically insignificant, a subset of patients exhibits endocrine or neuro-ophthalmologic manifestations which are diagnostic of empty sella syndrome (ESS). Recent studies suggest that more patients are affected by ESS than previously recognized, necessitating a deeper understanding of this condition. This comprehensive review describes a practical approach to evaluating and managing ESS. METHODS: Literature review was conducted on etiologies and risk factors associated with primary and secondary empty sella, the radiologic features that differentiate empty sella from other sellar lesions, and the role of clinical history and hormone testing in identifying patients with ESS, as well as treatment modalities. RESULTS: Pituitary function testing for somatotroph, lactotroph, gonadotroph, corticotroph, and thyrotroph abnormalities is necessary when suspecting ESS. While an isolated empty sella finding does not require treatment, ESS may require pharmacologic or surgical interventions to address hormone deficits or intracranial hypertension. Targeted hormone replacement as directed by the endocrinologist should align with guidelines and patient-specific needs. Treatment may involve a multidisciplinary collaboration with neurology, neurosurgery, or ophthalmology to address patient symptoms. CONCLUSION: This review underscores the evolving understanding of ESS, stressing the significance of accurate diagnosis and tailored management to mitigate potential neurologic and endocrine complications in affected individuals.

Inpatient glycemic management in noncritically ill patients: Updated guidelines.

Hyperglycemia is common in hospitalized patients and is traditionally managed with scheduled and correctional doses of insulin. The authors present an overview of the latest (2022) guidelines from the Endocrine Society on inpatient hyperglycemia management in noncritically ill patients, which includes a role for newer diabetes technologies and nontraditional insulin and noninsulin therapies.

Surgical Management of Giant Prolactinomas: A Descriptive Study.

Introduction: Giant prolactinoma (GP) is a rare pituitary lactotropic cell tumor larger than 4 cm in its widest dimension, and is less likely than a smaller prolactinoma to achieve prolactin normalization on dopamine agonist (DA) monotherapy. There is a paucity of data on the circumstances and outcomes of second-line management of GP with surgery. Herein, our institution's experience with the surgical management of GPs is described. Methods: A single-center retrospective analysis was conducted of patients who underwent surgery for giant prolactinoma from 2003 to 2018. A chart review was conducted for demographic data, clinical features, laboratory and radiographic findings, operative and pathology reports, perioperative management, and clinical outcomes in follow-up. Descriptive statistics were used. Results: Of 79 prolactinoma cases, 8 patients had GP with a median age of 38 years (range 20-53), 75% (6/8) were male, with a median largest tumor dimension of 6 cm (range 4.6-7.7), and a median prolactin level of 2,500 µg/L (range 100->13,000). Six patients had transsphenoidal surgery for dopamine agonist (DA) resistance or intolerance. Two patients had a craniotomy for a missed diagnosis; one was due to the hook effect. No tumor resections were complete by either surgical approach; all had persistent hyperprolactinemia requiring postoperative DA therapy, and two patients had an additional craniotomy procedure for further tumor debulking. There was no recovery of pituitary axes and postoperative deficits were common. Remission as defined by prolactin normalization occurred in 63% (5/8) at a median time of 36 months (range 14-63 months) on DA therapy after surgery with a follow-up of 3-13 years. Conclusions: GPs infrequently require surgical resection, which is generally incomplete and requires adjuvant therapy. Given the rarity of surgery for GPs, multi-institutional or registry studies would yield clearer guidance on optimal management.

Paraganglioma in pregnancy, a mimic of preeclampsia: a case report.

BACKGROUND: The new presentation of pheochromocytoma or paraganglioma in pregnancy is very rare and can be life-threatening for mother and child. CASE PRESENTATION: We present the case of a 26-year-old gravida 3 para 2 otherwise healthy Caucasian woman at 34 weeks gestation who presented with new onset hypertension associated with headaches, dry heaves, diaphoresis, and palpitations. She was initially diagnosed with preeclampsia and treated with labetalol and an urgent cesarean section, delivering a healthy baby girl. The diagnosis of preeclampsia came into question when, 6 weeks postpartum, she continued to have hypertension with atypical features. Testing revealed metastatic paraganglioma associated with a succinate dehydrogenase B gene mutation. The patient was then started on alpha-adrenergic blockade and has had close blood pressure monitoring while discussion of advances therapies is ongoing. CONCLUSION: This case demonstrates how paraganglioma/pheochromocytoma can be misdiagnosed as preeclampsia due to the overlapping features of new-onset hypertension late in pregnancy accompanied by headache and proteinuria. It is impractical to routinely screen for paraganglioma/pheochromocytoma in all pregnant patients diagnosed with preeclampsia due to the rarity of these tumors and the harm from high false-positive rates. Therefore, it is incumbent on the provider to have a high degree of suspicion for paraganglioma/pheochromocytoma when clinical features are unusual for preeclampsia, such as intermittent palpitations, diaphoresis, orthostatic hypotension, or hyperglycemia. Early detection of paraganglioma/pheochromocytoma with interventions to mitigate the risk of hypertensive crisis greatly reduce maternal and fetal mortality. Fortunately, our patient delivered a healthy baby and did not have any additional pregnancy complications despite the delay in her diagnosis.

Prevalence and clinical determinants of non-alcoholic fatty liver disease by liver scores in adults with type 1 diabetes.

AIMS: To investigate the prevalence and clinical risk factors for non-alcoholic fatty liver disease (NAFLD) in type 1 diabetes (T1DM) by liver scores. METHODS: A retrospective, unicenter, cross-sectional analysis was performed of adults with T1DM from 2015 to 2018. Steatosis scores (hepatic steatosis index-HSI, Framingham steatosis index-FSI) and fibrosis scores (FIB-4 index, AST-to-platelet ratio index-APRI) were associated with clinical parameters. RESULTS: We identified 447 patients, 38 ± 14.5 yrs, 54 % female, BMI 28 ± 5.9 kg/m2. Liver steatosis was prevalent at 61 % by HSI ≥ 36 and 52 % by FSI ≥ 23. A majority of these individuals had normal liver transaminase levels. The presence of advanced fibrosis was 4 % by APRI > 0.7 and 4 % by FIB-4 > 2.67. BMI ≥ 25 kg/m2 correlated with steatosis scores (P < 0.001) but not fibrosis scores. Older age (≥40 yrs), hypertension, dyslipidemia, and history of cardiovascular disease were associated with steatosis markers. Only 21 % had any abdominal imaging, 2 % had hepatology referral and 1 % had a liver biopsy. Glucagon-like peptide-1 agonist was prescribed in 5 % and thiazolidinedione in 4 %. CONCLUSION: Liver scores indicating steatosis but not fibrosis is common in adults with T1DM with obesity and/or metabolic syndrome, and is associated with older age, hypertension, and dyslipidemia. NAFLD is under-diagnosed and under-investigated; a minority of patients have had any liver evaluation or treatment.

A medical escape room to build intern workplace social capital in an internal medicine residency program.

PURPOSE: Trainee well-being is a growing focus in graduate medical education. One emerging area in occupational literature is the psychosocial environment of the workplace, of which a large component is workplace social capital (WSC). WSC encompasses how well a group connects to one another. Medical escape rooms (MERs) recently have been studied in various healthcare settings and are one proposed intervention to increase WSC. METHODS: This is a single-center before-and-after survey study at the Loyola University Medical Center in 2021 to measure the effect of a MER on WSC amongst interns. Our Chief Resident created a 1-hour MER. WSC scores were measured using a modified version of a validated WSC scale. Scores were analyzed with paired t-test analysis and chi-square analysis. Open-ended feedback was also collected. RESULTS: Of 52 eligible intern residents, 51 (98%) participated in the MER, and 41 (80%) completed the pre- and post-activity survey. All six survey statements had a greater percentage of positive responses following the MER. The average score across all participants and questions was 4.66 out of 5 on the pre-survey, and 4.90 on the post-survey (p < 0.001). CONCLUSIONS: The MER significantly improved intern resident WSC scores, and proved a valuable addition to our curriculum.

SARS-CoV-2 (COVID-19) and the Endocrine System.

As SARS-CoV-2 (COVID-19) overtakes the world, causing moderate to severe disease in about 15% of infected patients, COVID-19 is also found to have widespread effects throughout the body with a myriad of clinical manifestations including the endocrine system. This manuscript reviews what is known about the impact of COVID-19 on the pathophysiology and management of diabetes (both outpatient and inpatient) as well as pituitary, adrenal, thyroid, bone, and gonadal function. Findings in this area are evolving, and long-term effects of infection remain an active area of further research.

Dasatinib-induced hypoglycemia in a patient with acute lymphoblastic leukemia.

Tyrosine kinase inhibitors can cause significant hypoglycemia in patients with diabetes on other antihyperglycemic medications. These patients should be monitored, and their medications adjusted accordingly.

Applications and pitfalls of hemoglobin A1C and alternative methods of glycemic monitoring.

INTRODUCTION: Intensive glycemic control minimizes the risks of microvascular complications in diabetes. A1C is a convenient estimate of mean blood glucose, but is not the only marker available. The practical use and limitations of alternative markers and continuous glucose monitors are the focus of this review. METHODS: PubMed and the Cochrane Library were searched for studies concerning applications or limitations of A1C, fructosamine, glycated albumin, 1,5-anhydroglucitol, skin autofluorescence, and continuous glucose monitoring. Papers reporting on strengths, limitations, or comparisons of these methods were reviewed for inclusion. RESULTS: A1C reflects three months of glycemic control and is not an ideal marker in all patient populations. Fructosamine and glycated albumin reflect mean blood glucose over three weeks. 1,5-Anhydroglucitol can measure hyperglycemic excursions in days to weeks. Continuous glucose monitors provide immediate feedback for timely intervention to reduce glycemic excursions and can assess glycemic variability. Current barriers to continuous glucose monitor use include inexperience, cost, discomfort, and medication interference. CONCLUSIONS: Many promising alternative glycemic markers exist. The main limitations for all alternative methods of glycemic monitoring are a lack of standardization for clinically useful cut-offs or guidelines, and a lack of long-term data on their association with complications, particularly in varied patient populations.

Thyrotoxicosis-induced cardiomyopathy treated with venoarterial extracorporeal membrane oxygenation.

A 37-year-old woman with no past medical history presented with longstanding untreated hyperthyroidism and consequentially developed thyrotoxicosis-induced cardiomyopathy. Upon admission, she was noted with a heart rate of 172 beats per minute and an EKG consistent with supraventricular tachycardia which was unresponsive to adenosine. Shortly after the initiation of a non-cardioselective beta-blocker for the treatment of persistent tachycardia, she developed profound cardiogenic shock refractory to vasopressors and inotropes. She was diagnosed with thyroid storm, which was ultimately attributed to Graves' Disease and controlled with propylthiouracil, potassium iodide drops, and hydrocortisone. Extracorporeal membrane oxygenation (ECMO) was successfully used as a temporizing measure while her thyroid hormone level normalized and cardiac function recovered. Patients with longstanding untreated hyperthyroidism may be dependent on the induced hyperadrenergic state to compensate for low-output cardiac failure, therefore it is important to exercise caution when initiating beta-adrenergic blockade. Given the expected disease time-course in cases of acute decompensation, ECMO remains a viable option for short-term mechanical circulatory support.

Seronegative Adult Autoimmune Enteropathy in a Patient With Rheumatoid Arthritis.

Autoimmune enteropathy is a rare disorder of the immune system. We present a 75-year-old woman with rheumatoid arthritis who presented with 4 months of intractable vomiting, diarrhea, and unexplained weight loss. Initial workup was negative for infection and celiac disease, but her symptoms progressed. Repeat esophagogastroduodenoscopy showed duodenal scalloping and friability. Biopsies of the duodenum and terminal ileum showed glandular destruction, epithelial apoptosis, and goblet cell depletion. Colonoscopic examination was normal, and random colon biopsies did not show evidence of microscopic colitis. She was diagnosed with autoimmune enteropathy, and treatment consisted of an extended corticosteroid taper, with the resolution of symptoms.

Wake-Up Stroke Is Associated With Greater Nocturnal Mean Arterial Pressure Variability.

BACKGROUND AND PURPOSE: Wake-up strokes (WUS) account for ≈20% to 30% of ischemic strokes. Studies have shown that increased autonomic instability as measured by blood pressure variability (BPV) is greater in stroke patients than nonstroke patients, but no studies have compared BPV in WUS versus non-WUS patients. METHODS: From a single-center prospective registry, we identified consecutive ischemic stroke patients. BPV was calculated as the coefficient of variation of the mean arterial pressure during the first 24 hours after hospitalization. We assessed 24-hour BPV as a continuous measure and in quartiles in WUS versus non-WUS patients using univariable and multivariable statistics. RESULTS: Among 369 patients (64.9±16.5 years; 50.1% male; 64.7% white), 78 were WUS (21.1%). Clinical characteristics and medical history were not different between WUS and non-WUS patients except WUS patients were older (69.0 versus 63.8 years; P=0.015) and more frequently had previous ischemic stroke (29.5% versus 17.2%; P=0.012). Initial 24-hour BPV (11.77 versus 10.76; P=0.098) was similar between groups. However, WUS patients had greater nocturnal BPV (10.50 versus 8.95; P=0.030), whereas daytime BPV was similar between groups (10.96 versus 10.47, P=0.459). In multivariate analysis, the highest quartile (≥11.48 mm Hg) of nocturnal BPV was independently associated with WUS (adjusted odds ratio, 1.95; confidence interval, 1.13-3.39; P=0.017). CONCLUSIONS: In this single-center study, we observed that greater nocturnal BPV during the first 24 hours after hospitalization occurred in WUS than non-WUS patients. Nocturnal autonomic instability warrants further study as a potential mechanism of WUS.

Stereoselectivity in Asymmetric Catalysis: The Case of Ruthenium-Catalyzed Ketone Hydrogenation.

The ruthenium-catalyzed asymmetric hydrogenation of simple ketones to generate enantiopure alcohols is an important process widely used in the fine chemical, pharmaceutical, fragrance, and flavor industries. Chiral diphosphine-RuCl2-1,2-diamine complexes are effective catalysts for the reaction giving high chemo- and enantioselectivity. However, no diphosphine-RuCl2-1,2-diamine complex has yet been discovered that is universal for all kinds of ketone substrates, and the ligands must be carefully chosen for each substrate. The procedure of finding the best ligands for a specific substrate can be facilitated by using virtual screening as a complement to the traditional experimental screening of catalyst libraries. We have generated a transition state force field (TSFF) for the ruthenium-catalyzed asymmetric hydrogenation of simple ketones using an improved Q2MM method. The developed TSFF can predict the enantioselectivity for 13 catalytic systems taken from the literature, with a mean unsigned error of 2.7 kJ/mol.