Ovarian Leydig Cell Tumor Associated with Recurrent Torsion and Virilization in an Adolescent Patient

Ovarian tumors are rare in children; however, their incidence increases with age. Of these ovarian tumors, Leydig cell tumors are some of the rarest, accounting for less than 0.1% of all ovarian tumors across all ages. Leydig cell tumors predominantly occur in postmenopausal women and are characterized by nodular proliferation of Leydig cells in the ovarian hilum with intracytoplasmic Reinke crystals. These tumors secrete androgens, which can disrupt ovarian function, clinically presenting with abnormal uterine bleeding and virilization. Although they are generally benign, current recommendations are for treatment with a unilateral salpingo-oophorectomy. In adolescents, hyperandrogenism is most commonly caused by polycystic ovarian syndrome (PCOS); however, the differential for hyperandrogenism is broad. We present a case of a 15-year-old girl with a history of primary amenorrhea who presented with a Leydig cell tumor associated with recurrent ovarian torsion and virilization. This case reviews the challenges with diagnosis, management, and future implications of a rare androgen-secreting tumor in young patients.

Organ Boundary Circuits Regulate Sox9+ Alveolar Tuft Cells During Post-Pneumonectomy Lung Regeneration

Tissue homeostasis is controlled by cellular circuits governing cell growth, organization, and differentation. In this study we identify previously undescribed cell-to-cell communication that mediates information flow from mechanosensitive pleural mesothelial cells to alveolar-resident stem-like tuft cells in the lung. We find mesothelial cells to express a combination of mechanotransduction genes and lineage-restricted ligands which makes them uniquely capable of responding to tissue tension and producing paracrine cues acting on parenchymal populations. In parallel, we describe a large population of stem-like alveolar tuft cells that express the endodermal stem cell markers Sox9 and Lgr5 and a receptor profile making them uniquely sensitive to cues produced by pleural Mesothelium. We hypothesized that crosstalk from mesothelial cells to alveolar tuft cells might be central to the regulation of post-penumonectomy lung regeneration. Following pneumonectomy, we find that mesothelial cells display radically altered phenotype and ligand expression, in a pattern that closely tracks with parenchymal epithelial proliferation and alveolar tissue growth. During an initial pro-inflammatory stage of tissue regeneration, Mesothelium promotes epithelial proliferation via WNT ligand secretion, orchestrates an increase in microvascular permeability, and encourages immune extravasation via chemokine secretion. This stage is followed first by a tissue remodeling period, characterized by angiogenesis and BMP pathway sensitization, and then a stable return to homeostasis. Coupled with key changes in parenchymal structure and matrix production, the cumulative effect is a now larger organ including newly-grown, fully-functional tissue parenchyma. This study paints Mesothelial cells as a key orchestrating cell type that defines the boundary of the lung and exerts critical influence over the tissue-level signaling state regulating resident stem cell populations. The cellular circuits unearthed here suggest that human lung regeneration might be inducible through well-engineered approaches targeting the induction of tissue regeneration and safe return to homeostasis.

Firework-related injuries treated at emergency departments in the United States during the COVID-19 pandemic in 2020 compared to 2018-2019

Background

Despite a national decrease in emergency department visits in the United States during the first 10 months of the pandemic, preliminary Consumer Product Safety Commission data indicate increased firework-related injuries. We hypothesized an increase in firework-related injuries during 2020 compared to years prior related to a corresponding increase in consumer firework sales.

Methods

The National Electronic Injury Surveillance System (NEISS) was queried from 2018 to 2020 for cases with product codes 1313 (firework injury) and narratives containing “fireworks”. Population-based national estimates were calculated using US Census data, then compared across the three years of study inclusion. Patient demographic and available injury information was also tracked and compared across the three years. Firework sales data obtained from the American Pyrotechnics Association were determined for the same time period to examine trends in consumption.

Results

There were 935 firework-related injuries reported to the NEISS from 2018 to 2020, 47% of which occurred during 2020. National estimates for monthly injuries per million were 1.6 times greater in 2020 compared to 2019 (p < 0.0001) with no difference between 2018 and 2019 (p = 0.38). The same results were found when the month of July was excluded. Firework consumption in 2020 was 1.5 times greater than 2019 or 2018, with a 55% increase in consumer fireworks and 22% decrease in professional fireworks sales.

Conclusions

Firework-related injures saw a substantial increase in 2020 compared to the two years prior, corroborated by a proportional increase in consumer firework sales. Increased incidence of firework-related injuries was detected even with the exclusion of the month of July, suggesting that the COVID-19 pandemic may have impacted firework epidemiology more broadly than US Independence Day celebrations.

The parental journey of fetal care: a systematic review and metasynthesis

OBJECTIVE

This study aimed to synthesize the qualitative literature on parental experiences of fetal care to reflect events that happened across the continuum of care and to better understand parents' positive and negative experiences with care delivery.

DATA SOURCES

Eligible studies published until June 2020 were retrieved from MEDLINE, Embase, Cochrane Central Register of Controlled Trials, EBSCO CINAHL, Web of Science, and ProQuest.

STUDY ELIGIBILITY CRITERIA

Studies must have been: (1) published in English in a peer-reviewed journal or in ProQuest, (2) available in full text, (3) contained a qualitative component, and (4) focused on expectant parents' experiences of tertiary, coordinated, multidisciplinary prenatal diagnosis and care related to a fetal anomaly.

STUDY APPRAISAL AND SYNTHESIS METHODS

Researchers used the Joanna Briggs Institute Critical Appraisal Checklist for Qualitative Research. A metastudy and an interpretive description approach was taken to synthesize the events that happened across the continuum of care and the themes associated with a positive care experience.

RESULTS

The metasynthesis included 13 studies and 217 patients from 11 different multidisciplinary fetal diagnosis and intervention practices across North America and Europe. We identified key events that influenced parental experience of fetal care across the continuum. The themes associated with a positive care experience are parents (1) gaining understanding and feeling understood, (2) realizing agency and control, and (3) finding hope and meaning. We identified aspects of healthcare delivery that served as barriers or facilitators to these positive experiences.

CONCLUSION

Understanding the commonalities of the parental experience of fetal care across diverse settings creates a foundation for improving care and better meeting the needs of parents undergoing a painful and life-defining event. Although health outcomes are not always positive, a positive experience of care is possible and can assist parents to cope with their grief, manage their expectations, and engage in their care. The findings of this study illustrate the ways in which healthcare delivery can facilitate or obstruct a positive care experience.

Multicenter retrospective comparison of spontaneous intestinal perforation outcomes between primary peritoneal drain and primary laparotomy

PURPOSE

The purpose of our study was to compare outcomes of infants with spontaneous intestinal perforation (SIP) treated with primary peritoneal drain versus primary laparotomy.

METHODS

We performed a multi-institution retrospective review of infants with diagnosis of SIP from 2012 to 2016. Clinical characteristics and outcomes were compared between infants treated with primary peritoneal drain vs infants treated with laparotomy.

RESULTS

We identified 171 patients treated for SIP (drain n = 110 vs. laparotomy n = 61). There were no differences in maternal or prenatal characteristics. There were no clinically significant differences in vital signs, white blood cell or platelet measures, up to 48 h after intervention. Patients who were treated primarily with a drain were more premature (24.9 vs. 27.2 weeks, p < 0.001) and had lower median birth weight (710 g vs. 896 g, p < 0.001). No significant differences were found in complications, time to full feeds, length of stay (LOS) or mortality between the groups. Primary laparotomy group had more procedures (median number 1 vs. 2, p = 0.002). There were 32 (29%) primary drain failures whereby a laparotomy was ultimately needed.

CONCLUSIONS

SIP treated with primary drain is successful in the majority of patients with no significant differences in outcomes when compared to laparotomy with stoma.

THE LEVEL OF EVIDENCE

III.

The in-utero diagnosis of choledochal cyst: can postnatal imaging predict benefit from early surgical intervention?

Background: Infants prenatally suspected of having a choledochal cyst (CDC) typically undergo ultrasound imaging shortly after birth. This study sought to evaluate features on the initial postnatal ultrasound (IPU) that could identify newborns at risk for early complications.Methods: Following IRB approval, patients from four US fetal centers with prenatal suspicion for CDC and postnatal imaging from 2000 to 2017 were reviewed. Imaging and clinical courses were assessed.Results: Forty-two patients had prenatal ultrasounds suspicious for CDC. Nineteen (45.2%) were excluded due to diagnostic revision (n = 9), cyst resolution (n = 5), lack of IPU measurements (n = 3), or lack of follow-up (n = 2). The 23 remaining patients were included in the study. Of these, five (21.7%) developed symptoms at a median age of 16.5 days (IQR 16-19 days), and 18 (78.3%) remained asymptomatic throughout the first year after birth. Five patients (21.7%) had cysts ≥ 4.5 cm on IPU (Symptomatic: n = 3; Asymptomatic: n = 2). Eighteen patients (78.3%) had cysts < 4.5 cm on IPU (Symptomatic: n = 2; Asymptomatic: n = 16). An IPU cyst size ≥ 4.5 cm was associated with neonatal symptom manifestation (p = 0.048), with 88.9% specificity (95% CI 65.3-98.6%) and 60% sensitivity (95% CI 14.7-94.7%).Conclusions: In newborns with prenatally diagnosed CDC, a cyst size ≥ 4.5 cm on IPU is associated with symptom development during the first month after birth and therefore early cyst excision is recommended.

Egr-1 mediates extracellular matrix-driven transcription of membrane type 1 matrix metalloproteinase in endothelium

Matrix metalloproteinase activity is instrumental in processes of cellular invasion. The interstitial invasion of endothelial cells during angiogenesis is accompanied by up-regulation of several matrix metalloproteinases, including membrane type 1 matrix metalloproteinase (MT1-MMP). In this study, we show that endothelial cells stimulated to undergo angiogenesis by a three-dimensional extracellular matrix environment increase production of the transcription factor Egr-1. Increased binding of Egr-1 to the MT1-MMP promoter correlates with enhanced transcriptional activity, whereas mutations in the Egr-1 binding site abrogate the increased transcription of MT1-MMP in the stimulated cells. These data identify Egr-1-mediated transcription of MT1-MMP as a mechanism by which endothelial cells can initiate an invasive phenotype in response to an alteration in extracellular matrix environment, thus functionally associating MT1-MMP with a growing number of proteins known to be up-regulated by Egr-1 in response to tissue injury or mechanical stress.