Multicystic dysplastic kidney

The Role of Prenatal Ultrasound Examination in Predicting the Outcomes of Ovarian Fetal Cysts: A Pictorial Essay

Objectives: The aim of this study was to evaluate prenatal ultrasound features, fetal postnatal outcomes, and the need for postnatal surgery in the suspicion of ovarian torsion. Methods: We included patients with a singleton pregnancy with a suspicion of ovarian fetal cyst referred to our center. Data derived from prenatal ultrasound evaluations, delivery, and postnatal follow-up were then extracted from the hospital registers. Results: The ultrasound features of 32 fetal ovarian cysts and related neonatal outcomes were analyzed. The mean gestational age at diagnosis was 32 weeks (28-36), while the mean diameter of the cyst diagnosis was 34.8 ± 13.2 mm. In 78.1% of cases, the cysts did not change their characteristics during pregnancy, while in 9.4%, they increased their dimensions, and in 12.5%, they reduced their size. In 78.1% of cases, the diagnosis was confirmed postnatally, and in 40% of cases, a spontaneous regression occurred during follow-up. Surgery was performed in 60% of cases, and most of the time (66.7%), an adnexectomy was required. Conclusions: An unfavorable outcome was associated with cystic dimensions and ultrasound feature modifications during pregnancy. However, our study demonstrated that a hemorrhagic content is not always indicative of adnexal torsion, and spontaneous resolution may occur. In addition, only a few of the simple anechoic cysts managed surgically presented with necrosis at histopathological examination; therefore, a conservative approach might be proposed in those cases.

Multicystic dysplastic kidney in adults: A case report of unilateral presentation in an adult sudanese female

Multicystic dysplastic kidney is a congenital anomaly typically diagnosed in infancy, rare in adults, in our case of a 25-year-old Sudanese female presented with left flank pain. Imaging showed the left kidney replaced by cysts, consistent with MCDK, and ovarian cyst. She underwent a successful open simple nephrectomy; and histopathology confirmed MCDK. Our case highlights diagnostic and management challenges of MCDK in adults. Conservative management is increasing, especially for asymptomatic patients with normal contralateral kidney function. Healthcare barriers in Sudan, including limited awareness and political unrest, complicate timely diagnosis and treatment. Multidisciplinary care and improved healthcare access are essential.

Single-Center Experience of Pediatric Cystic Kidney Disease and Literature Review

INTRODUCTION

Pediatric cystic kidney disease (CyKD) includes conditions characterized by renal cysts. Despite extensive research in this field, there are no reliable genetics or other biomarkers to estimate the phenotypic consequences. Therefore, CyKD in children heavily relies on clinical and diagnostic testing to predict the long-term outcomes.

AIM

A retrospective study aimed to provide a concise overview of this condition and analyze real-life data from a single-center pediatric CyKD cohort followed during a 12-year period.

METHODS AND MATERIALS

Medical records were reviewed for extensive clinical, laboratory, and radiological data, treatment approaches, and long-term outcomes.

RESULTS

During the study period, 112 patients received a diagnosis of pediatric CyKD. Male patients were more involved than female (1:0.93). Fifty-six patients had a multicystic dysplastic kidney; twenty-one of them had an autosomal dominant disorder; fifteen had an isolated renal cyst; ten had been diagnosed with autosomal recessive polycystic kidney disease; three had the tuberous sclerosis complex; two patients each had Bardet-Biedl, Joubert syndrome, and nephronophthisis; and one had been diagnosed with the trisomy 13 condition. Genetic testing was performed in 17.9% of the patients, revealing disease-causing mutations in three-quarters (75.0%) of the tested patients. The most commonly presenting symptoms were abdominal distension (21.4%), abdominal pain (15.2%), and oligohydramnios (12.5%). Recurrent urinary tract infections (UTI) were documented in one-quarter of the patients, while 20.5% of them developed hypertension during the long-term follow-up. Antibiotic prophylaxis and antihypertensive treatment were the most employed therapeutic modalities. Seventeen patients progressed to chronic kidney disease (CKD), with thirteen of them eventually reaching end-stage renal disease (ESRD). The time from the initial detection of cysts on an ultrasound (US) to the onset of CKD across the entire cohort was 59.0 (7.0-31124.0) months, whereas the duration from the detection of cysts on an US to the onset of ESRD across the whole cohort was 127.0 (33.0-141.0) months. The median follow-up duration in the cohort was 3.0 (1.0-7.0) years. The patients who progressed to ESRD had clinical symptoms at the time of initial clinical presentation.

CONCLUSION

This study is the first large cohort of patients reported from Croatia. The most common CyKD was the multicystic dysplastic kidney disease. The most common clinical presentation was abdominal distention, abdominal pain, and oliguria. The most common long-term complications were recurrent UTIs, hypertension, CKD, and ESRD.

The Pathophysiology of Inherited Renal Cystic Diseases

Renal cystic diseases (RCDs) can arise from utero to early adulthood and present with a variety of symptoms including renal, hepatic, and cardiovascular manifestations. It is well known that common RCDs such as autosomal polycystic kidney disease and autosomal recessive kidney disease are linked to genes such as PKD1 and PKHD1, respectively. However, it is important to investigate the genetic pathophysiology of how these gene mutations lead to clinical symptoms and include some of the less-studied RCDs, such as autosomal dominant tubulointerstitial kidney disease, multicystic dysplastic kidney, Zellweger syndrome, calyceal diverticula, and more. We plan to take a thorough look into the genetic involvement and clinical sequalae of a number of RCDs with the goal of helping to guide diagnosis, counseling, and treatment.

Antenatal imaging: A pictorial review

Today, in parallel with the use of imaging modalities increases in all fields, the use of imaging methods in pregnant women is increasing. Imaging has become an integral component of routine pregnancy follow-up. Imaging provides parents with an early opportunity to learn about the current situation, including prenatal detection of anomalies or diseases, etiology, prognosis, and the availability of prenatal or postnatal treatments. Various imaging modalities, especially ultrasonography, are frequently used for imaging both maternal and fetal imaging. The goal of this review was to address imaging modalities in terms of usefulness and safety, as well as to provide demonstrative examples for disorders. And this review provides current information on selecting a safe imaging modality to evaluate the pregnant and the fetus, the safety of contrast medium use, and summarizes major pathological situations with demonstrative sonographic images to assist radiologists and obstetricians in everyday practice.

Cystic Kidney Diseases That Require a Differential Diagnosis from Autosomal Dominant Polycystic Kidney Disease (ADPKD)

Autosomal dominant polycystic kidney disease (ADPKD) is the most common hereditary cystic kidney disease, with patients often having a positive family history that is characterized by a similar phenotype. However, in atypical cases, particularly those in which family history is unclear, a differential diagnosis between ADPKD and other cystic kidney diseases is important. When diagnosing ADPKD, cystic kidney diseases that can easily be excluded using clinical information include: multiple simple renal cysts, acquired cystic kidney disease (ACKD), multilocular renal cyst/multilocular cystic nephroma/polycystic nephroma, multicystic kidney/multicystic dysplastic kidney (MCDK), and unilateral renal cystic disease (URCD). However, there are other cystic kidney diseases that usually require genetic testing, or another means of supplementing clinical information to enable a differential diagnosis of ADPKD. These include autosomal recessive polycystic kidney disease (ARPKD), autosomal dominant tubulointerstitial kidney disease (ADTKD), nephronophthisis (NPH), oral-facial-digital (OFD) syndrome type 1, and neoplastic cystic kidney disease, such as tuberous sclerosis (TSC) and Von Hippel-Lindau (VHL) syndrome. To help physicians evaluate cystic kidney diseases, this article provides a review of cystic kidney diseases for which a differential diagnosis is required for ADPKD.

Sonographic Detection of Multicystic Dysplastic Kidneys

Multicystic dysplastic kidney (MCDK) is a common nonhereditary cystic dysplasia that can be detected antenatally. This disorder commonly manifests in utero and presents unilaterally; however, this patient’s case demonstrates bilateral MCDKs. The use of sonography is essential in diagnosing this disorder both antenatally and following birth. Bilateral MCDKs present as large anechoic cysts overtaking renal parenchyma and halting all normal renal physiologic functions. This case study demonstrates the importance of early detection, the progression of this disorder, as well as the large part sonographic imaging plays in visualizing the MCDK.