Pediatric adrenocortical tumor - review and management update

Adrenocortical neoplasm in a 2-year-old child: Clinical approach and diagnostic imaging

Adrenocortical tumors in children and adolescents are rare and aggressive, accounting for only 0.2% of pediatric cancers, with most cases associated with Li-Fraumeni syndrome. The most common manifestation is virilization due to androgen excess. Imaging techniques are crucial in the diagnosis and management of pediatric adrenocortical carcinoma. CT and MRI are essential for differentiating between benign and malignant lesions and assessing tumor characteristics and extent. Correlating imaging findings with clinical and histopathological data is vital for optimal diagnosis and treatment, underscoring the need for a multidisciplinary approach to managing these rare but aggressive neoplasms. This report presents the case of a previously healthy 2-year-old boy who exhibited virilization symptoms and was diagnosed with adrenocortical carcinoma.

Identifying prognostic hub genes and key pathways in pediatric adrenocortical tumors through RNA sequencing and Co-expression analysis

Pediatric adrenocortical tumors (ACTs), rare conditions with uncertain prognoses, have high incidence in southern and southeastern Brazil. Pediatric ACTs are highly heterogeneous, so establishing prognostic markers for these tumors is challenging. We have conducted transcriptomic analysis on 14 pediatric ACT samples and compared cases with favorable and unfavorable clinical outcomes to identify prognostically significant genes. This comparison showed 1257 differentially expressed genes in favorable and unfavorable cases. Among these genes, 15 out of 60 hub genes were significantly associated with five-year event-free survival (EFS), and 10 had significant diagnostic value for predicting ACT outcomes in an independent microarray dataset of pediatric adrenocortical carcinomas (GSE76019). Overexpression of N4BP2, HSPB6, JUN, APBB1IP, STK17B, CSNK1D, and KDM3A was associated with poorer EFS, whereas lower expression of ISCU, PTPR, PRKAB2, CD48, PRF1, ITGAL, KLK15, and HIST1H3J was associated with worse outcomes. Collectively, these findings underscore the prognostic significance of these hub genes and suggest that they play a potential role in pediatric ACT progression and are useful predictors of clinical outcomes.

Adrenocortical tumor manifesting as virilizing in a female child: Adenoma or carcinoma? A rare case report

INTRODUCTION

Adrenocortical tumors (ACTs) are rare endocrine neoplasms in children, with functional ACTs being more prevalent than non-functional types. Clinical manifestations typically include virilization, Cushing's syndrome, and hyperaldosteronism. Surgical intervention is the primary treatment for ACTs, with a significant risk of recurrence in adrenocortical carcinoma even after complete resection.

PRESENTATION OF CASE

This case presentation describes a 3.5-year-old female with generalized hirsutism and clitoral hypertrophy, leading to the discovery of a left adrenal tumor. The child underwent adrenalectomy, revealing a benign adrenal cortical adenoma. Unfortunately, due to loss of follow-up, the child later presented with pulmonary metastases and passed away, preventing further investigation into the source of metastases.

DISCUSSION

Adrenocortical tumors are uncommon in children, with the classification of ACTs into adenomas and carcinomas. To our knowledge, this is the third case of an adrenocortical tumor in a child in Syria. We highlight the challenges in managing pediatric ACTs and emphasize the importance of timely intervention and close monitoring to improve outcomes. Regular follow-up is crucial to detect complications early and optimize treatment strategies, especially considering the unpredictable behavior of these tumors.

CONCLUSION

This case confirms that distinguishing between adrenocortical adenoma and carcinoma can be challenging even histologically. Therefore, it is necessary to follow up after treating each case of adenoma in a child to prevent major complications.

Presentation and Care for Children with Peripheral Precocious Puberty

Peripheral precocious puberty (PPP) refers to the early onset of sexual maturation that is independent of central nervous system control. The extensive differential diagnosis includes congenital and acquired causes. Presenting features depend on which class of sex steroids is involved, and diagnosis rests on hormonal and, if indicated, imaging and/or genetic studies. Effective treatment exists for nearly all causes of PPP. Ongoing research will advance our therapeutic armamentarium and understanding of the pathophysiologic basis of these conditions.

Adrenocortical carcinoma in a 10-month-old infant: A literature review and a rare case report

Adrenocortical carcinoma (ACC) in children is a rare condition. The annual incidence of ACC is extremely low, with only 0.2-0.3 cases per million children. The clinical presentations of ACC are numerous, such as terminal hair appearance, pubertal progress, hypercortisolism, enlarged clitoris, acne, systemic arterial hypertension, weight gain, and voice change.

Case presentation

A 10-month-old female infant presented by her parents to the Department of Endocrinology with a mass on the right adrenal gland and Cushing's syndrome symptoms. Surgery was performed. The death occurred after two times resuscitation due to sudden cardiac arrest.

Clinical discussion

The adrenal gland consists of two distinct parts. Different types of tumors arise from each part of the adrenal gland. The most common tumor in adrenomedullary tumors was neuroblastoma which accounted for 60.4% of adrenal tumors. ACC in children is a rare condition. The etiology of ACTs is unclear.

Conclusion

This case emphasizes that early diagnosis has a considerable role in preventing major complications. Also to advise considering ACC as a differential diagnosis when similar symptoms are found in an infant.

Adrenocortical carcinoma and a sporadic MEN1 mutation in a 3-year-old girl: a case report

Childhood adrenocortical carcinoma (ACC) is a rare disease that is mostly linked to familial cancer syndrome. Although the prevalence of ACC is extremely low in children, it is clinically important to diagnose ACC early because age and tumor stage are closely related to prognosis. From this perspective, understanding the underlying genetics and possible symptoms of ACC is crucial in managing ACC with familial cancer syndromes. In this report, we present the case of a 3-year-old girl who initially presented with symptoms of precocious puberty and was later found to have ACC by imaging analysis. On genetic analysis, the patient was found to have a MEN1 gene mutation. MEN1 mutations are found in patients with multiple endocrine neoplasia type 1 (MEN1), usually precipitating multiple endocrine tumors, including pituitary adenoma, parathyroid hyperplasia, and adrenal tumors. Although MEN1 mutation is usually inherited in an autosomal dominant manner, neither of the patient's parents had the same mutation, making hers a case of sporadic MEN1 mutation with initial presentation of ACC. The clinical course and further investigations of this patient are discussed in detail in this report.

Retrospective Analysis of Prognostic Factors in Pediatric Patients with Adrenocortical Tumor from Unique Tertiary Center with Long-Term Follow-Up

Pediatric adrenocortical tumors (PACTs) represent rare causes of malignancies. However, the south/southeast regions of Brazil are known to have a high incidence of PACTs because of the founder effect associated with a germline pathogenic variant of tumor suppressor gene TP53. We aimed to retrospectively analyze the types of variables among hormone production, radiological imaging, tumor staging, histological and genetic features that were associated with the occurrence of malignancy in 95 patients (71% females) with PACTs from a unique center. The worst prognosis was associated with those aged > 3 years (p < 0.05), high serum levels of 11-desoxicortisol (p < 0.001), tumor weight ≥ 200 g (p < 0.001), tumor size ≥ 5 cm (p < 0.05), Weiss score ≥ 5 (p < 0.05), Wieneke index ≥ 3 (p < 0.001) and Ki67 ≥ 15% (p < 0.05). Furthermore, patients with MacFarlane stage IV had an overall survival rate almost two times shorter than patients with other stages (p < 0.001). Additionally, the subtractions of BUB1B-PINK1 (<6.95) expression (p < 0.05) and IGF-IR overexpression (p = 0.0001) were associated with malignant behavior. These results helped identify patients who are likely to have an aggressive course; further multicenter prospective studies are required to confirm our results. In conclusion, PACTs with these patterns of prognostic factors could be treated using an adjuvant approach that may improve the overall survival in such patients.

Construction and validation of a prognostic model for predicting overall survival of primary adrenal malignant tumor patients: A population-based study with 1,080 patients

Objective

Primary adrenal malignant tumor is rare. The factors affecting the prognosis remain poorly defined. This study targeted to construct and corroborate a model for predicting the overall survival of adrenal malignant tumor patients.

Methods

We investigated the SEER database for patients with primary adrenal malignant tumor. 1,080 patients were divided into a construction cohort (n = 756) and a validation cohort (n = 324), randomly. The prognostic factors for overall survival were evaluated using univariate and multivariate Cox analyses. The nomogram was constructed and then validated with C-index, calibration curve, time-dependent ROC curve, and decision curve analysis in both cohorts. Then we divided the patients into 3 different risk groups according to the total points of the nomogram and analyzed their survival status by Kaplan-Meier curve with log-rank test.

Results

The baseline characteristics of these two cohorts were not statistically different (P > 0.05). Using univariate and multivariate Cox analyses, 5 variables, including age, tumor size, histological type, tumor stage, and surgery of primary site, were distinguished as prognostic factors (P < 0.05). Based on these variables, we constructed a nomogram to predict the 3- year, 5- year, and 10-year overall survival. The C-indexes were 0.780 (0.760–0.800) in the construction cohort and 0.780 (0.751–0.809) in the validation cohort. In both cohorts, the AUC reached a fairly high level at all time points. The internal and external calibration curves and ROC analysis showed outstanding accuracy and discrimination. The decision curves indicated excellent clinical usefulness. The best cut-off values for the total points of the nomogram were 165.4 and 243.1, and the prognosis was significantly different for the three different risk groups (P < 0.001).

Conclusion

We successfully constructed a model to predict the overall survival of primary adrenal malignant tumor patients. This model was validated to perform brilliantly internally and externally, which can assist us in individualized clinical management.

MicroRNA-149-3p expression correlates with outcomes of adrenocortical tumor patients and affects proliferation and cell cycle progression of H295A adrenocortical cancer cell line

Pediatric adrenocortical tumor (ACT) is a rare and aggressive neoplasm, with incidence in southern and southeastern Brazil 10-15 times higher than worldwide. Although microRNAs (miRNAs) have been reported to act as tumor suppressors or oncogenes in several cancers, the role of miR-149-3p in ACT remains unknown. In this study, we evaluated the expression of miR-149-3p in 67 pediatric ACT samples and 19 non-neoplastic adrenal tissues. The overexpression of miR-149-3p was induced in H295A cell line, and cell viability, proliferation, colony formation, and cell cycle were assessed by in miR-149-3p mimic or mimic control. In silico analysis were used to predict miR-149-3p putative target genes. CDKN1A expression at the mRNA and protein levels was evaluated by qRT-PCR and western blot, respectively. Higher miR-149-3p expression was associated with unfavorable ACT outcomes. Compared to the mimic control, miR-149-3p overexpression increased cell viability and colony formation, and affected cell cycle progression. Also, we identified CDKN1A as a potential miR-149-3p target gene, with decreased expression at both the gene and protein levels in miR-149-3p mimic cells. Collectively, these findings suggest that miR-149-3p promotes H295A cell viability by downregulating CDKN1A and provide evidence that miR-149-3p may be useful as a novel therapeutic target for pediatric ACT.

Germline De Novo Mutations as a Cause of Childhood Cancer

Germline de novo mutations (DNMs) represent one of the important topics that need extensive attention from epidemiologists, geneticists, and other relevant stakeholders. Advances in next-generation sequencing technologies allowed examination of parent-offspring trios to ascertain the frequency of germline DNMs. Many epidemiological risk factors for childhood cancer are indicative of DNMs as a mechanism. The aim of this review was to give an overview of germline DNMs, their causes in general, and to discuss their relation to childhood cancer risk. In addition, we highlighted existing gaps in knowledge in many topics of germline DNMs in childhood cancer that need exploration and collaborative efforts.

Surgical outcomes and survival of adrenocortical carcinoma between children and adults

INTRODUCTION

Adrenocortical carcinoma (ACC) is associated with poor outcomes. We compared surgical outcomes between children and adult; and identified factors independently associated with survival.

METHODS

Using the National Cancer Database, children and adults with ACC who underwent surgery between 2004 and 2016 were identified. We compared outcomes and survival between groups. Cox regression analysis was performed to identify predictors of survival.

RESULTS

Of 2553 patients, 2.8% were children. A higher proportion of children were Hispanic (19.1%vs.6.6%) and covered by government insurance (45.1%vs.35.8%) than adults. More pediatric patients received lymphadenectomy and chemotherapy than adults. Pediatric patients had better survival at 1 -(91.4%; 95%CI: 81.2%-96.0% vs.79.6%; 95%CI: 77.9%-81.1%) and 5-years (60.6%; 95%CI:47.5%-71.3% vs.44.9%; 95%CI 42.7%- 47.0) (p = 0.0016). Age≥18 (HR: 2.21(1.50-3.27)), metastatic disease at diagnosis (HR: 3.51(3.04-4.04)), and receipt of lymphadenectomy (HR: 1.30(1.14-1.48)) were independently associated with worse survival.

CONCLUSIONS

Children with ACC had better survival than adults. Factors independently associated with worse survival included older age, metastatic disease, and receipt of lymph node surgery.

EDP-mitotane in children: reassuring evidence of reversible side-effects and neurotoxicity

Adrenocortical carcinoma affects one in 5 million children each year. Since prognosis for children older than 4 years is limited, clinicians often choose aggressive treatment with etoposide, doxorubicin, cisplatin (EDP) and mitotane after resection. However, little is known about the impact of EDP-mitotane in children. We provide an overview of case-reports and case series listing side-effects and neurotoxicity of EDP-mitotane in children. Fourteen studies were identified describing a range of gastro-intestinal, endocrine, developmental and neuropsychological side-effects. Neurotoxicity included motor- and speech delay, decreased concentration and lower school performance. These side-effects appear to be reversible after mitotane discontinuation. We have added our own experience with a 10 year old girl with advanced adrenocortical carcinoma treated with EDP and 2 years of mitotane after irradical resection. She developed an impactful, but reversible, decrease in cognitive development measured by a standardized neuropsychological assessment before, during and after mitotane therapy. This decrease was mostly measurable in terms of decreased processing speed and concentration and a significant drop in school performance. Combined with fatigue and insecurity, this caused problems in short-term memory and the need to change her school type. In conclusion, EDP-mitotane is associated with several side-effects including neurotoxicity in pediatric cases, all reversible after mitotane discontinuation.

Pediatric adrenocortical carcinoma

Adrenocortical carcinoma (ACC) is a rare endocrine malignancy of the adrenal gland with an unfavorable prognosis. It is rare in the pediatric population, with an incidence of 0.2-0.3 patients per million in patients under 20 years old. It is primarily associated with Li-Fraumeni and Beckwith-Wiedemann tumor predisposition syndromes in children. The incidence of pediatric ACC is 10-15fold higher in southern Brazil due to a higher prevalence of TP53 mutation associated with Li-Fraumeni syndrome in that population. Current treatment protocols are derived from adult ACC and consist of surgery and/or chemotherapy with etoposide, doxorubicin, and cisplatin (EDP) with mitotane. Limited research has been reported on other treatment modalities for pediatric ACC, including mitotane, pembrolizumab, cabozantinib, and chimeric antigen receptor autologous cell (CAR-T) therapy.

Genitourinary Tract Tumors in Children: An Update

BACKGROUND

Genitourinary tract tumors in children are less common than in adults. Most of these tumors have different genetic backgrounds, clinical presentation, and oncologic behavior than their adult counterpart. As a result of low prevalence in children, some of the treatment approaches and recommendations are based on treatment experience in adult patients. However, thanks to scientific and technological development, survival rates have risen considerably.

OBJECTIVE

This paper presents a review of the principal features of the tumors involving the genitourinary tract in children and an update in genetic background, diagnosis, and treatment.

METHODS

A narrative review was performed on published literature about genitourinary tract tumors in pediatric patients. Papers presented in English and Spanish literature were reviewed. PubMed, Science Direct, and SciELO databases were used to collect information and present this article.

RESULTS

Kidney tumors are the most common type of genitourinary tumors in children. Among those, Wilms tumor represents the majority of cases and shows the successful work of clinical trial groups studying this tumor type. Other tumors involving the genitourinary tract in children include Rhabdomyosarcoma, Transitional cell carcinoma, Testicular, and Adrenal tumors.

CONCLUSION

Genitourinary tract tumors in children represent significant morbidity and economic burden, so awareness in early diagnosis represents improvement in treatment, clinical, and oncological outcomes.

Adrenocortical Carcinoma in Childhood: A Systematic Review

Adrenocortical tumors are rare in children. This systematic review summarizes the published evidence on pediatric adrenocortical carcinoma (ACC) to provide a basis for a better understanding of the disease, investigate new molecular biomarkers and therapeutic targets, and define which patients may benefit from a more aggressive therapeutic approach. We included 137 studies with 3680 ACC patients (~65% female) in our analysis. We found no randomized controlled trials, so this review mainly reflects retrospective data. Due to a specific mutation in the TP53 gene in ~80% of Brazilian patients, that cohort was analyzed separately from series from other countries. Hormone analysis was described in 2569 of the 2874 patients (89%). Most patients were diagnosed with localized disease, whereas 23% had metastasis at primary diagnosis. Only 72% of the patients achieved complete resection. In 334 children (23%), recurrent disease was reported: 81%-local recurrence, 19% (n = 65)-distant metastases at relapse. Patients < 4 years old had a different distribution of tumor stages and hormone activity and better overall survival (p < 0.001). Although therapeutic approaches are typically multimodal, no consensus is available on effective standard treatments for advanced ACC. Thus, knowledge regarding pediatric ACC is still scarce and international prospective studies are needed to implement standardized clinical stratifications and risk-adapted therapeutic strategies.

Survival characteristics of localized pediatric adrenocortical carcinoma managed with adenectomy: A national cancer center database analysis

INTRODUCTION

Pediatric adrenocortical carcinoma (ACC) is a rare malignancy, encompassing less than 0.2% of all childhood malignancies. Due to the scarcity of this diagnosis, it is often managed according to guidelines established for adults, as there is a lack of reliable evidence regarding optimal adjuvant treatment options for pediatric patients. It is our aim to identify recent treatment trends as well as clinical and tumor characteristics and their impact on overall survival.

METHODS

Using the National Cancer Data Base (NCDB), this study identified 49 patients under 18 years old with localized ACC (M0) undergoing adrenalectomy from 2004 to 2017. Kaplan-Meier analysis was performed to determine overall survival (OS) from patient characteristics and treatments received. Comparison of survival was performed using the log rank test.

RESULTS

The median age of our cohort was 3 years old with a slight female predominance of 61%. The median tumor size was 9.4 cm, and patients older than 4 years were significantly (p = 0.03) more likely to present with larger tumors (11.33 cm vs 8.76 cm). Adjuvant treatment in the form of systemic therapy was administered in 20 of 49 (41%) patients and radiation therapy in 2 of 49 (4%) patients. Three-year OS for patients 4 years old and younger was 92.6% vs 61.8% for those older than 4 years (p = 0.002). Patients presenting with tumor size ≥9 cm had worse three-year OS compared to those with tumors <9 cm (95.24% vs 67.1% respectively, p = 0.02, Fig. 1). In patients with tumors ≥ 9 cm, younger children age 0-4 years had significantly (p = 0.04) higher OS rates than older children age 5-17 years.

CONCLUSIONS

ACC is a rare pediatric malignancy with a female predominance. Those older than 4 years and those with presenting tumor size ≥9 cm have decreased overall survival rates after adrenalectomy for localized disease. Additionally, children older than 4 have poorer prognosis, even after controlling for larger tumor size. This is the largest contemporary series of localized pediatric ACC to date. However, multi-institutional prospective cohort or randomized-controlled trials are necessary to better evaluate relevant prognostic factors and the role of adjuvant therapies following adrenalectomy.