The prevalence of Stafne bone cavity: A meta-analysis of 355,890 individuals

Background/purpose

A Stafne bone cavity (SBC) is an incidental depression in the lingual surface of the mandible. The aim of this study is to provide pooled estimates of the frequency of Stafne bone cavity and to correlate its presence with such variables as sex, laterality, diagnostic methods and population.

Materials and methods

Potential studies were searched through four electronic databases: Google Scholar, PubMed, Scopus, and Journal Storage. Titles, abstracts, and full texts of the articles were screened.

Results

A total of 54 studies relating to 355,890 subjects met the inclusion criteria for meta-analysis. A meta-analysis using the DerSimonian-Laird model revealed an overall prevalence of 0.17% (CI:0.14%-0.21%, I ² = 80.7%). SBC was four times more common in males than females (z = 6.94, P < 0.01), and was unilateral in almost all cases (z = 12.90, P < 0.01). Radiographic studies yielded a lower SBC prevalence at 0.12% (CI:0.09%-0.15%, I ² = 71.7%) than computed tomography studies, skeletal studies and excavation studies. Ancient populations had three times higher SBC prevalences (0.47%, CI:0.21%-0.73%, I ² = 89.5%) than the average populations today (z = 3.21, P < 0.01).

Conclusion

The prevalence of Stafne bone cavity is approximately 0.17%, and was four times more prevalent in males than females. This variant bone cavity was also present unilaterally in the majority of cases. Awareness of SBC is important for dentists, maxillofacial surgeons and other practitioners performing routine dental practices and interpreting panoramic radiographs.

Associations of CB1 cannabinoid receptor (CNR1) gene polymorphisms with risk for alcohol dependence: Evidence from meta-analyses of genetic and genome-wide association studies

OBJECTIVES

Reported associations of the cannabinoid receptor 1 (CNR1) single nucleotide polymorphisms (SNPs) with alcohol dependence (AD) have been inconsistent, prompting a meta-analysis to obtain more precise estimates.

METHODS

A Boolean search of 4 databases (PubMed, Scopus, Google Scholar, and Mednar) sought articles that evaluated the association between CNR1 polymorphisms and risk of AD. We selected the articles with sufficient genotype frequency data to enable calculation of odds ratios (ORs) and 95% confidence intervals (CIs). Using the Population Intervention Comparators Outcome elements, AD patients (P) were compared by genotype data between AD-participants (I) and non-AD-participants (C) in order to determine the risk of AD (O) attributed to the CNR1 SNPs. Analyzing 4 SNPs (rs1049353, rs1535255, rs2023239, and rs806379) using standard genetic models, we examined associations where multiple comparisons were Holm-Bonferroni corrected. The pooled ORs were assessed for aggregate statistical power and robustness (sensitivity analysis). Subgroups were Caucasians and African-Americans.

RESULTS

From 32 comparisons, 14 were significant indicating increased risk, from which 5 outcomes (P-value for association [Pa] = .003 to <.001) survived the Holm-Bonferroni-correction, which were deemed robust. In the rs1535255 outcomes, the codominant effect (OR = 1.43, 95% CIs = 1.24-1.65, Pa < .001) had greater statistical power than the dominant effect (OR = 1.30, 95% CI = 1.08-1.57, Pa = .006). In contrast, the rs2023239 codominant outcome was underpowered. Significance of both rs806379 Caucasian outcomes (ORs = 1.20-1.43, 95% CIs = 1.07-1.57, Pa = .003) contrasted with the null effects in African-Americans (ORs = 0.98-1.08, 95% CIs = 0.70-1.53).

CONCLUSIONS

Three CNR1 SNPs (rs1535255, rs2023239, and rs806379) were implicated in their associations with development of AD: based on aggregate statistical power, rs1535255 presented greater evidence for associations than rs2023239; rs806379 implicated the Caucasian subgroup. Multiple statistical and meta-analytical features (consistency, robustness, and high significance) underpinned the strengths of these outcomes. Our findings could render the CNR1 polymorphisms useful in the clinical genetics of AD.

Unravelling a pediatric enigma: coexisting retroesophageal right subclavian artery and congenital colonic stenosis masquerading as cow's milk protein allergy and ileus in a neonate

BACKGROUND

Double alimentary tract obstruction due to congenital anomalies is a rare clinical occurrence, with limited cases published in medical literature. This article presents a unique case of coexisting retroesophageal right subclavian artery (RRSA) and congenital colonic stenosis (CCS), conditions that have not been previously documented together in pediatric population.

CASE PRESENTATION

A Thai male newborn was born by cesarean section at gestational age of 41 weeks. One week before birth, intrauterine asphyxia and idiopathic bilateral intracerebral hemorrhage were diagnosed by prenatal ultrasonography. Despite postnatal interventions including a ventriculoperitoneal shunt and subsequent external ventricular drain, the intracerebral hemorrhage recurred and progressed. Concurrently, the patient experienced multiple episodes of post-feeding vomiting, intermittent abdominal distension, and regular defecation without constipation. Sepsis secondary to an infected shunt occurred, accompanied by marked abdominal distension. The physician clinically suspected non-IgE-mediated cow's milk protein allergy and ileus associated with sepsis. Tragically, the patient succumbed at seven months due to a brain abscess stemming from an infected external ventricular drain. Ultimately, postmortem examination unraveled double alimentary tract obstruction, consisting of RRSA and CCS. The RRSA, originating from proximal thoracic aorta, caused notable esophageal compression and functional stenosis which led to the frequent vomiting and reflux. The CCS involved the distal transverse colon, descending colon and proximal sigmoid colon, accounting for nearly 50% of the colon. The CCS was therefore the exact cause of intermittent abdominal distension. The stenotic colon contained submucosal and myenteric plexuses, excluding Hirschsprung disease.

CONCLUSION

This case highlights the diagnostic complexities of RRSA and CCS resulting in double gut obstruction and masquerading as non-IgE-mediated cow's milk protein allergy and sepsis-induced ileus. Awareness of these rare coexisting congenital anomalies can aid in early recognition, prevent misdiagnosis, enable timely management and improve outcomes for affected pediatric patients.