Sodium-glucose cotranspor ter 2 (SGLT2) inhibitors in nephrolithiasis: should we "gliflozin" patients with kidney stone disease? / Inibidores de cotransportadores sódio-glicose-2 (SGLT2) na nefrolitíase - devemos "gliflozinar" os litiásicos?

ABSTRACT The prevalence of nephrolithiasis is increasing worldwide. Despite advances in understanding the pathogenesis of lithiasis, few studies have demonstrated that specific clinical interventions reduce the recurrence of nephrolithiasis. The aim of this review is to analyze the current data and potential effects of iSGLT2 in lithogenesis and try to answer the question: Should we also "gliflozin" our patients with kidney stone disease?

RESUMO A prevalência da nefrolitíase está aumentando em todo o mundo. Apesar dos avanços na compreensão da patogênese da doença litiásica, poucos estudos demonstraram que intervenções clínicas específicas diminuem a recorrência da nefrolitíase. O objetivo desta revisão é analisar os dados atuais e efeitos potenciais dos iSGLT2 na doença litiásica e tentar responder à pergunta: devemos também "gliflozinar" os litiásicos?

Safety and efficacy of vacuum-assisted mini-percutaneous nephrolithotomy for the treatment of renal stone disease: an analysis of stone free status and postoperative infectious complications.

PURPOSE: Vacuum-assisted mini-percutaneous nephrolithotomy (vmPCNL) is being increasingly adopted due to its faster operating times and lower incidence of postoperative infectious complications (IC), however, studies have been limited by small sample sizes. We hypothesize that vmPCNL is an efficacious treatment for renal stone disease with acceptable stone-free rates (SFR) and low incidence of IC. The objectives of this study were to measure SFR three months after surgery, determine the factors influencing SFR, and determine the rates of postoperative IC after vmPCNL. MATERIALS AND METHODS: Seven hundred and sixty seven patients underwent vmPCNL for the treatment of renal stones > 20 mm at a single institution. Patients underwent postoperative computed tomography at three months to assess SFR. Postoperative fever and SIRS/Sepsis were recorded for individual patients. Multivariate logistics regression was performed to assess predictors of SFR. RESULTS: The SFR was found to be 73.7% at three months. Stone burden (OR 0.39, 95% CI [0.33-0.46]) and age (OR 1.03, 95% CI [1.01-1.04]) emerged as statistically significant predictors of SFR on multivariate analysis. 5.5% of patients experienced postoperative fever, while 2.9% experienced SIRS/Sepsis. CONCLUSIONS: This is the largest continuous cohort of patients to undergo vmPCNL for stone disease and demonstrates that vmPCNL is safe and efficacious, with an SFR of 74% at three months. The incidence of postoperative fever and SIRS/Sepsis is 5.5% and 2.9% respectively. Further randomized studies with large sample sizes are required to ascertain the rates of these complications in comparison to conventional approaches.

Acute kidney injury and hypercalcemia associated with veterinary supplements applications in adult man / Injúria renal aguda e hipercalcemia associadas a aplicações de suplementos veterinários em homem adulto

The compound "ADE" is an injectable oil for veterinary use which contains large amounts of vitamins A, D and E. The parenteral application in humans leads to a granuloma reaction which triggers hypercalcemia. A 42-year-old man was admitted with lower limb pain, nephrolithiasis and nephrocalcinosis. Laboratory tests revealed creatinine 4.59 mg/dl, calcium 13.3 mg/dl and parathormone 13.8 pg/ml. He underwent an ureterolithotripsy, stent placement, intravenous crystalloid fluids, and corticosteroid. He improved symptoms, kidney function and normalized serum calcium. The "ADE"-induced hypercalcemia diagnosis can be challenging. The early diagnosis may avoid negative outcomes.

O composto "ADE'' é um óleo veterinário injetável que contém grandes quantidades de vitaminas A, D e E. A aplicação parenteral causa reação granulomatosa e hipercalcemia. Um homem de 42 anos foi admitido com dor no membro inferior, nódulos musculares endurecidos, nefrolitíase e nefrocalcinose. O laboratório revelou creatinina 4,59 mg/dl, cálcio 13,3 mg/dl e paratormônio 13,8 pg/ml. Foi tratado com ureterolitotripsia, cateter duplo-J, cristaloide intravenoso e corticoterapia. Ele apresentou melhora dos sintomas, função renal e normalizou cálcio. O diagnóstico da hipercalcemia pelo "ADE'' pode ser desafiador. O diagnóstico precoce pode evitar desfechos negativos.

Simulators in urology resident's training in retrograde intrarenal surgery

ABSTRACT Purpose: To evaluate the impact of simulators on the training of urology residents in retrograde intrarenal surgery (RIRS). Methods: The study involved training eight urology residents, using two artificial simulators; one developed by the Universidade Estadual do Pará, using three-dimensional printing technology, and the other one patented by the medical equipment manufacturer Boston Scientific The qualification of residents took place through a training course, consisting of an adaptation phase (S0), followed by three training sessions, with weekly breaks between them (S1, S2 and S3). Study members should carry out a RIRS in a standardized way, with step-by-step supervision by the evaluator using a checklist. The participants' individual performance was verified through a theoretical assessment, before and after training (pre- and post-training), as well as by the score achieved in each session on a scale called global psychomotor skill score. In S3, residents performed an analysis of the performance and quality of the simulation, by completing the scale of student satisfaction and self confidence in learning (SSSCL). Results: At the end of the course, everyone was able to perform the procedure in accordance with the standard. The training provided a learning gain and a considerable improvement in skills and competencies in RIRS, with p < 0.05. SSSCL demonstrated positive feedback, with an overall approval rating of 96%. Conclusions: Artificial simulators proved to be excellent auxiliary tools in the training of urology residents in RIRS.

Urolitiasis en lactantes: un reto diagnóstico y terapéutico. Reporte de un caso

La litiasis urinaria en niños obedece a cambios nutricionales, ambientales, climáticos, predisposición genética, infecciones del tracto urinario, anomalías metabólicas y/o anatómicas subyacentes, su incidencia es de 1-3%, la cual se ha incrementado en la última década. Se presenta lactante masculino de 22 meses, con presencia de cálculos a nivel uretral con proceso infeccioso asociado, quien requirió procedimiento invasivo para la extracción de un cálculo y documentaron hiperuricosuria, hipomagneseuria e hipercalciuria, sin antecedente familiar de litiasis renal. La urolitiasis en lactantes es relevante dado el papel que puede tener en la etiología de la infección urinaria y en el deterioro progresivo de la función renal, abarca un manejo integral multidisciplinario debido a su carácter recurrente y que aún no existe un tratamiento curativo, es importante establecer los factores de riesgo, definir estrategias para el diagnóstico temprano y acciones para su prevención y procedimientos menos invasivos para la extracción de los cálculos.

Urinary lithiasis in children are due to nutritional, environmental, climatic changes, genetic predisposition, urinary tract infections, underlying metabolic and/or anatomical anomalies. Its incidence is 1-3%, which has increased in the last decade. We present the case of a 22-month-old male infant, who presented with stones at the urethral level with an associated infectious process, and who required an invasive procedure for the extraction of a stone. The patient had documented hyperuricosuria, hypomagneseuria and hypercalciuria, without a family history of kidney stones. Urolithiasis in infants is relevant given the role it can play in the etiology of urinary infection and the progressive deterioration of kidney function. Its treatment encompasses comprehensive multidisciplinary management due to its recurrent nature and the fact that there is still no curative treatment. It is important to identify risk factors, define strategies for early diagnosis, preventive measures and less invasive procedures for stone extraction.

Determination of homeodomain interacting protein kinase 2 polymorphisms rs2058265, rs6464214, and rs7456421 in patients with kidney stone.

OBJECTIVE: This study aimed to investigate whether homeodomain interacting protein kinase 2 (HIPK2) polymorphism is associated with renal stone formation in a Turkish population. MATERIALS AND METHODS: A total of 129 patients with calcium nephrolithiasis and 67 sex- and age-matched healthy controls were enrolled in the study. Blood samples were collected into EDTA tubes. The DNA of patients was extracted using a QIAsymphony® automated DNA isolation system. The Chi-square test was applied in the comparisons between the patient and control groups in respect of the differences in the genotype and allele frequencies. RESULTS: No statistically significant difference was found between the groups in terms of single nucleotide polymorphism (SNP) incidence in single allele and double alleles in the rs2058265 and rs6464214 regions (p = 0.13 and 0.37, respectively). The SNP incidence in double alleles in nephrolithiasis patients at rs7456421 was statistically significantly lower than in the control group (p = 0.001). CONCLUSION: Distributions of the genotype and allele of the three polymorphisms (rs2058265, rs6464214, and rs745642 in HIPK2) were not associated with an increased risk of kidney stone in this Turkish population.

OBJETIVO: Investigar si el polimorfismo de la proteína cinasa 2 que interactúa con el homeodominio (HIPK2) está asociado con la formación de cálculos renales en una población turca. MÉTODO: Se inscribieron en el estudio 129 pacientes con nefrolitiasis cálcica y 67 sujetos control sanos, emparejados por sexo y edad. Las muestras de sangre se recogieron en tubos con EDTA. El ADN de los pacientes se extrajo mediante un sistema de aislamiento de ADN automatizado QIAsymphony®. Se aplicó la prueba χ2 en las comparaciones entre los grupos de pacientes y control con respecto a las diferencias de las frecuencias genotípicas y alélicas. RESULTADOS: No se encontraron diferencias estadísticamente significativas entre los grupos en términos de incidencia de polimorfismo de nucleótido simple (PNS) en alelo simple y alelo doble en las regiones rs2058265 y rs6464214 (p = 0.13 y 0.37, respectivamente). La incidencia de PNS en alelos dobles en pacientes con nefrolitiasis en rs7456421 fue menor que en el grupo control, con una diferencia estadísticamente significativa (p = 0.001). CONCLUSIONES: Las distribuciones de genotipo y alelo de los tres polimorfismos (rs2058265, rs6464214 y rs745642 en HIPK2) no se asociaron con un mayor riesgo de cálculos renales en esta población turca.

Nefrolitotomía Endoscópica ex vivo del injerto renal de donante vivo con instrumento flexible / Living-donor kidney graft ex vivo endoscopic nephrolithotomy with flexible instrument

INTRODUCTION: The finding of an asymptomatic stone in the study of a living kidney donor does not necessarily contraindicate donation, however, there is no consensus on the management of these cases. The use of a graft with lithiasis may represent a risk of recurrence in the remaining kidney in the donor and eventual obstructive complications in the transplanted kidney. The objective of this work is to present the usefulness of ureteroscopy (URS) to resolve lithiasis ex vivo before transplantation. MATERIAL AND METHODS: Donors with a small, asymptomatic kidney stone and with an analysis of lithogenic factors without relevant findings were considered to continue in the donation process. The kidney unit with stone was selected for nephrectomy. RESULTS: Four donor kidneys underwent flexible URS after nephrectomy under hypothermic preservation conditions during bench preparation. The average time of the procedure was 35 minutes and the stone was extracted in all cases without incident. The transplant was carried out in the usual way and the evolution of the recipients was without complications and with excellent renal function. During follow-up, no recurrence of lithiasis was observed in donors or recipients. CONCLUSIONS: In this experience, the URS of the donor kidney was a feasible procedure and was not associated with adverse consequences for the graft. The main advantage of this procedure is to avoid the potential risk to the recipient of an obstructive graft complication.

Bone density, microarchitecture and estimated strength in stone formers: a cross-sectional HR-pQCT study.

BACKGROUND: Low areal bone mineral density (BMD), increased fracture risk and altered bone remodeling have been described among stone formers (SFs), but the magnitude of these findings differs by age, sex, menopausal status and urinary calcium (uCa). This study aimed to investigate volumetric BMD (vBMD), bone microarchitecture and biomechanical properties by high-resolution peripheral quantitative computed tomography (HR-pQCT) and finite element analysis (FEA) in young SFs, irrespective of calciuria, further distinguishing trabecular from cortical compartments. METHODS: HR-pQCT/FEA was performed at the distal tibia (DT) and distal radius (DR) in 106 SFs (57 males and 49 premenopausal females; median age 37 years) and compared with 106 non-SFs (NSFs) retrieved from an existing database, matched for age, sex and body mass index (BMI). Biochemical/hormonal serum and urinary parameters were obtained from SFs. RESULTS: SFs exhibited significantly lower trabecular number (TbN) and higher trabecular separation (TbSp) than NSFs at both anatomical sites and lower cortical porosity in the DR. In a subgroup analysis separated by sex, female SFs presented significantly lower TbvBMD, relative bone volume fraction (BV/TV) and TbN and higher TbSp than NSFs at both sites, while male SFs showed significantly lower stiffness and failure load. Multivariate analysis showed TbN to be independently associated with sex and BMI at both sites and with uCa at the DR. CONCLUSIONS: The present findings suggest that bone disease represents an early event among SFs, associated at least in part with calcium excretion and mainly characterized by trabecular bone microarchitecture impairment, especially among women, but with reduced bone strength parameters in men.

Protocolo de manejo metabólico multidisciplinario de la litiasis urinaria

La enfermedad de cálculos renales, (nefrolitiasis) es un problema común en la atención en salud. Entre algunos de los factores que ayudan a la prevalencia de litiasis se encuentra la obesidad, altas temperaturas ambientales, y los climas secos. La frecuencia de las diferentes composiciones de los cálculos es: Oxalato de calcio entre el 70-80 %, fosfato calcico el 15 % (la apatita es más común y la brushita es menos común), Ácido úrico el 8%, cistina entre el 1-2 %, Estruvita -1%, Varios - <1 %3.No existen muchos datos sobre la recurrencia de los mismos, pero se sabe que la tasa de recurrencia de litiasis urinaria es del 10 al 30% a los 5 años en pacientes que tienen cálculos de oxalato de calcio idiopáticos. Se plantea elaborar un protocolo de manejo metabólico multidisciplinario de la litiasis urinaria en base a la bibliografía actual tomando en cuanto los puntos de vistas de las especialidades destinadas al manejo del paciente con litiasis urinaria. Nuestro objetivo es establecer un protocolo de manejo capaz de identificar y establecer una terapia que pueda prevenir los cálculos urinarios de forma eficiente y económica, mejorando el pronóstico y minimizando las complicaciones.

Kidney stone disease is a common problem in health care. Among the factors that contribute to the prevalence of lithiasis are obesity, high environmental temperatures, and dry climates. The frequency of the different stone compositions is: Calcium Oxalate 70-80%, Calcium Phosphate -15% (Apatite is more common and Brushite is less common), Uric Acid 8%, Cystine - 1-2%, Struvite -1%, Various - <1%3. There are not many data on their recurrence, but it is known that the recurrence rate of urinary lithiasis is 10 to 30% at 5 years in patients with idiopathic calcium oxalate stones. It is proposed to develop a multidisciplinary metabolic management protocol for urinary lithiasis based on the current bibliography, taking the point of specialties dedicated to the management of patients with urinary lithiasis. Our goal is to establish a management protocol capable of identifying and establishing a therapy that can efficiently and economically prevent urinary stones, improving prognosis and minimizing complications.

Use of artificial intelligence for sepsis risk prediction after flexible ureteroscopy: a systematic review / Uso da inteligência artificial na predição do risco de sepse pós-ureteroscopia flexível: uma revisão sistemática

ABSTRACT Introduction: flexible ureteroscopy is a minimally invasive surgical technique used for the treatment of renal lithiasis. Postoperative urosepsis is a rare but potentially fatal complication. Traditional models used to predict the risk of this condition have limited accuracy, while models based on artificial intelligence are more promising. The objective of this study is to carry out a systematic review regarding the use of artificial intelligence to detect the risk of sepsis in patients with renal lithiasis undergoing flexible ureteroscopy. Methods: the literature review is in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA). The keyword search was performed in MEDLINE, Embase, Web of Science and Scopus and resulted in a total of 2,496 articles, of which 2 met the inclusion criteria. Results: both studies used artificial intelligence models to predict the risk of sepsis after flexible uteroscopy. The first had a sample of 114 patients and was based on clinical and laboratory parameters. The second had an initial sample of 132 patients and was based on preoperative computed tomography images. Both obtained good measurements of Area Under the Curve (AUC), sensitivity and specificity, demonstrating good performance. Conclusion: artificial intelligence provides multiple effective strategies for sepsis risk stratification in patients undergoing urological procedures for renal lithiasis, although further studies are needed.

RESUMO Introdução: a ureteroscopia flexível é uma técnica cirúrgica minimamente invasiva utilizada para o tratamento de litíase renal. A urosepse pós-operatória é uma complicação rara, mas potencialmente fatal. Os modelos tradicionais utilizados para prever o risco dessa condição apresentam precisão limitada, enquanto modelos baseados em inteligência artificial são mais promissores. O objetivo desse estudo é realizar uma revisão sistemática a respeito do uso de inteligência artificial para detecção do risco de sepse em pacientes com litíase renal submetidos à ureteroscopia flexível. Métodos: a revisão de literatura está de acordo com o Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA). A busca com palavras-chave foi realizada no MEDLINE, Embase, Web of Science e Scopus e resultou no total de 2.496 artigos, dos quais 2 se enquadraram nos critérios de inclusão. Resultados: os dois estudos utilizaram modelos de inteligência artificial para predizer o risco de sepse após utereroscopia flexível. O primeiro teve uma amostra de 114 pacientes e foi baseado em parâmetros clínicos e laboratoriais. O segundo teve uma amostra inicial de 132 pacientes e foi baseado em imagens de tomografia computadorizada no pré-operatório. Ambos obtiveram boas medidas de Area Under the Curve (AUC), sensibilidade e especificidade, demonstrando boa performance. Conclusão: a inteligência artificial fornece múltiplas estratégias eficazes para estratificação do risco de sepse em pacientes submetidos a procedimentos urológicos para litíase renal, ainda que mais estudos sejam necessários.

Curcumin alleviated oxidation stress injury by mediating osteopontin in nephrolithiasis rats

Purpose: To explore the role and mechanism of curcumin (Cur) in reducing oxidative stress damage in rats with nephrolithiasis induced by ethylene glycol (EG). Methods: Thirty male rats were divided into normal control, model, positive (10% potassium citrate), Cur-10 (10 mg/kg curcumin) and Cur-20 (20 mg/kg curcumin) groups. Results: The results of kidney tissue section stained by hematoxylin-eosin and von Kossa showed that curcumin treatment can inhibit the formation of kidney stones. The biochemical test results showed that the urea (Ur), creatinine (Cr), uric acid (UA), inorganic phosphorus and Ca2+ concentrations in urine decreased after being treated with curcumin. There were significant differences between different doses of curcumin (P < 0.05). Compared with the Cur-10 group, Cur-20 had a more significant inhibitory effect on malondialdehyde (MDA) (P < 0.05). In addition, reverse transcription polymerase chain reaction (PCR) detection and immunohistochemical results indicated that the osteopontin (OPN) in the kidney was significantly reduced after curcumin treatment. Conclusion: Curcumin could reduce the oxidative stress damage caused by EG-induced kidney stones.

Hiperaldosteronismo primario asociado a neoplasia adrenal. Reporte de caso

Se describe el caso de un varón de 68 años con antecedente de hipertensión arterial no tratada, diagnosticada un año antes, que ingresó con un cuadro de anasarca, debilidad muscular y disnea al reposo. Los primeros exámenes realizados mostraron hipopotasemia severa, alcalosis metabólica, litiasis renal y vesical y enfermedad renal crónica. La tomografía abdominal reveló una tumoración suprarrenal derecha, hidronefrosis bilateral y litiasis renal y vesical. Con la sospecha de hiperaldosteronismo primario se completó el estudio, con la determinación de relación aldosterona/concentración de renina directa, que resultó alta. El estudio metabólico arrojó hipercalciuria e hiperuricosuria y la gradiente transtubular de potasio mayor de 7. El paciente fue sometido a tratamiento quirúrgico con nefrectomía derecha, sin embargo, falleció en el postoperatorio inmediato, por shock hipovolémico e insuficiencia respiratoria.

SUMMARY We report the case of a 68-year-old male with a history of non-treated arterial hypertension diagnosed the previous year that was admitted with anasarca, muscle weakness and dyspnea at rest. The first laboratory exams showed severe hypopotassemia, metabolic alkalosis, renal and gallbladder lithiasis and chronic renal disease. The abdominal tomography revealed a right suprarenal tumor, bilateral hydronephrosis and renal and gallbladder lithiasis. Under the suspicion of primary hyperaldosteronism, the diagnosis was confirmed with the determination of the relationship between aldosterone/direct renin concentration, which was high. The metabolic study showed hypercalciuria and hyperuricosuria and the potassium trans tubular gradient was above 7. The patient underwent right nephrectomy, nonetheless, died at the immediate post-operatory period due to a hypovolemic shock and respiratory failure.

Complicaciones frecuentes en pacientes con nefrolitotomía percutánea / Common complications in patients with percutaneous nephrolithotomy

RESUMEN La nefrolitotomía percutánea es un procedimiento estandarizado para el tratamiento de la litiasis renal. El objetivo de esta comunicación fue describir las complicaciones que más incidieron en los pacientes que fueron atendidos en el Hospital Universitario Clínico-Quirúrgico «Arnaldo Milián Castro¼, en el servicio de Urología, de enero de 2015 a diciembre de 2019, a los cuales se les realizó nefrolitotomía percutánea, así como el tratamiento que recibieron y su evolución. Este estudio mostró bajo índice de complicaciones, lo que guarda relación con el poco tiempo utilizado para realizar esta técnica. Esto resultó beneficioso ya que contribuyó a la corta estadía hospitalaria y disminuyó el consumo de materiales e insumos médicos. También representa un gran logro para los médicos y sobre todo para el paciente, el cual puede recuperarse en un menor período de tiempo y vincularse rápidamente a su vida diaria.

ABSTRACT Percutaneous nephrolithotomy is a standardized procedure for the treatment of kidney stones. The objective of this communication was to describe complications, treatment and evolution of patients who underwent a percutaneous nephrolithotomy in the Urology service at "Arnaldo Milián Castro" Clinical and Surgical University Hospital from January 2015 to December 2019. This study showed a low rate of complications, which is related to the short time used to perform this technique. This was beneficial since it contributed to the short hospital stay and decreased the consumption of medical materials and supplies. It also represents a great achievement for doctors and above all for the patients, who can recover in a shorter period of time and be quickly returned to their daily life.

Hypoparathyroidism: update of guidelines from the 2022 International Task Force.

The 2022 International Task Force guidelines for chronic hypoparathyroidism will be published within several months in the Journal of Bone and Mineral Research. These guidelines update the original guidelines published in 2016, and include new information from literature published since then. Chronic postsurgical hypoparathyroidism is now defined as lasting for at least 12 months after surgery, rather than 6 months. Chronic postsurgical hypoparathyroidism may be predicted by serum PTH <10 pg/mL in the first 12-24 hours after surgery. The most common symptoms and complications of chronic hypoparathyroidism based on the literature are summarized in detail. How to monitor and manage patients with hypoparathyroidism is described in detail where recommendations can be given. These guidelines are intended to frame the diagnosis and care of patients with chronic hypoparathyroidism for at least the next five years.

Skeletal and nonskeletal consequences of hypoparathyroidism.

Hypoparathyroidism, despite the conventional therapy with calcium and active vitamin D, can lead to skeletal and nonskeletal abnormalities. Chronic hypoparathyroidism is associated with a significant reduction in bone remodeling, increases in areal and volumetric bone density, and improvement in trabecular microarchitecture and in trabecular bone score. Regardless of these advantages in bone mass and microarchitecture, recent data suggest an increased vertebral fracture risk in patients with nonsurgical hypoparathyroidism. Moreover, chronic hypoparathyroidism can lead to abnormalities in multiple organ systems, including the neurological, cardiovascular, renal, neuropsychiatric, ocular, and immune systems. Nephrocalcinosis, nephrolithiasis, and renal insufficiency, as well as decreased quality of life and cataracts, are common in patients with hypoparathyroidism. An increased incidence of hospitalization due to infections and a greater risk of cardiovascular diseases are observed in patients with hypoparathyroidism, particularly in those with nonsurgical disease. All these abnormalities may be because of the disease itself or complications of therapy. We herein reviewed the skeletal and nonskeletal consequences of hypoparathyroidism in patients conventionally managed with calcium and active vitamin D.

Normocalcemic primary hyperparathyroidism.

Normocalcemic primary hyperparathyroidism (PHPT) is a newer phenotype of PHPT defined by elevated PTH concentrations in the setting of normal serum calcium levels. It is increasingly being diagnosed in the setting of evaluation for nephrolithiasis or metabolic bone diseases. It is important to demonstrate that PTH values remain consistently elevated and to measure ionized calcium levels to make the diagnosis. A diagnosis of normocalcemic disease is one of exclusion of secondary forms of hyperparathyroidism, including vitamin D deficiency, renal failure, medications, malabsorption, and hypercalciuria. Lack of rigorous diagnostic criteria and selection bias of the studied populations may explain the different rates of bone and renal complications. The natural history still remains unknown. Caution should be used in recommending surgery, unless clearly indicated. Here we will review the diagnostic features, epidemiology, clinical presentation, natural history, medical and surgical management of normocalcemic PHPT.

Serratia fonticola and its role as a single pathogen causing emphysematous pyelonephritis in a non-diabetic patient: A case report.

BACKGROUND: Diagnosis of emphysematous pyelonephritis has been described around the world for some decades, frequently associated with Escherichia coli and other anaerobic, gas-forming bacteria and mostly in patients living with diabetes. We present a case report of emphysematous pyelonephritis in a non-diabetic patient caused by Serratia fonticola as well as a brief literature review to draw attention to this rare pathogen as a cause of pyelonephritis. CASE SUMMARY: A 38-year-old female presented with fever, severe pain in the right flank and changes in urinary habits. She was admitted, and emphysematous pyelonephritis was confirmed by an abdominal computerized tomography and urine cultures; the latter showed Serratia fonticola as a single pathogen. After 3 d of being treated with piperacillin/tazobactam and percutaneous drainage she became afebrile, and the gas presence reduced. CONCLUSION: Emphysematous pyelonephritis infections in non-diabetic patients are rare but can be severe and life-threatening. This case suggests that Serratia fonticola infection can occur in patients undergoing invasive or instrumented procedures.

Hypoparathyroidism: update of guidelines from the 2022 International Task Force

ABSTRACT The 2022 International Task Force guidelines for chronic hypoparathyroidism will be published within several months in the Journal of Bone and Mineral Research. These guidelines update the original guidelines published in 2016, and include new information from literature published since then. Chronic postsurgical hypoparathyroidism is now defined as lasting for at least 12 months after surgery, rather than 6 months. Chronic postsurgical hypoparathyroidism may be predicted by serum PTH <10 pg/mL in the first 12-24 hours after surgery. The most common symptoms and complications of chronic hypoparathyroidism based on the literature are summarized in detail. How to monitor and manage patients with hypoparathyroidism is described in detail where recommendations can be given. These guidelines are intended to frame the diagnosis and care of patients with chronic hypoparathyroidism for at least the next five years.

Skeletal and nonskeletal consequences of hypoparathyroidism

ABSTRACT Hypoparathyroidism, despite the conventional therapy with calcium and active vitamin D, can lead to skeletal and nonskeletal abnormalities. Chronic hypoparathyroidism is associated with a significant reduction in bone remodeling, increases in areal and volumetric bone density, and improvement in trabecular microarchitecture and in trabecular bone score. Regardless of these advantages in bone mass and microarchitecture, recent data suggest an increased vertebral fracture risk in patients with nonsurgical hypoparathyroidism. Moreover, chronic hypoparathyroidism can lead to abnormalities in multiple organ systems, including the neurological, cardiovascular, renal, neuropsychiatric, ocular, and immune systems. Nephrocalcinosis, nephrolithiasis, and renal insufficiency, as well as decreased quality of life and cataracts, are common in patients with hypoparathyroidism. An increased incidence of hospitalization due to infections and a greater risk of cardiovascular diseases are observed in patients with hypoparathyroidism, particularly in those with nonsurgical disease. All these abnormalities may be because of the disease itself or complications of therapy. We herein reviewed the skeletal and nonskeletal consequences of hypoparathyroidism in patients conventionally managed with calcium and active vitamin D.

Normocalcemic primary hyperparathyroidism

ABSTRACT Normocalcemic primary hyperparathyroidism (PHPT) is a newer phenotype of PHPT defined by elevated PTH concentrations in the setting of normal serum calcium levels. It is increasingly being diagnosed in the setting of evaluation for nephrolithiasis or metabolic bone diseases. It is important to demonstrate that PTH values remain consistently elevated and to measure ionized calcium levels to make the diagnosis. A diagnosis of normocalcemic disease is one of exclusion of secondary forms of hyperparathyroidism, including vitamin D deficiency, renal failure, medications, malabsorption, and hypercalciuria. Lack of rigorous diagnostic criteria and selection bias of the studied populations may explain the different rates of bone and renal complications. The natural history still remains unknown. Caution should be used in recommending surgery, unless clearly indicated. Here we will review the diagnostic features, epidemiology, clinical presentation, natural history, medical and surgical management of normocalcemic PHPT.