No abstract

Abstract. We introduce a stochastic PDE based approach to sampling paths of SDEs, con ditional on observations. The SPDEs are derived by generalising the Langevin MCMC method to infinite dimensions. Various applications are described, including sampling paths subject to two endpoint conditions (bridges) and nonlinear filter/smoothers.

The age at diagnosis and the dose of anthracyclines appear to be strongly associated with the severity of dental defects, although few survivors reported high annual expenses for dental treatment. The increased risk of dental defects during adulthood should be communicated to ALL survivors.

Oral sequelae were frequently reported, and health care providers should be attentive to the presence and severity of these problems. Less than one-third of the patients remembered having received information about oral sequelae associated with chemotherapy. A continuous focus on how to diagnose, manage, and inform about oral cancer-related complications is advisable.

Purpose To investigate oral and dental late effects in survivors of childhood brain tumors medulloblastoma (MB) and central nervous system supratentorial primitive neuroectodermal tumor (CNS-PNET). Methods This cross-sectional study assessed oral and dental late effects in MB/CNS-PNET survivors treated before 20 years of age, and with a minimum of 2 years since treatment. Participants went through an oral and radiographic examination. We assessed oral status using the decayed-missing-filled index (DMFT), oral dryness, maximum mouth opening (MMO), fungal infection, and registration of dental developmental disturbances (DDD) in the form of hypodontia, microdontia, and enamel hypoplasia. Results The 46 participants’ mean age at enrolment was 27 ± 12.8 years and at treatment 8.5 ± 5.2 years, and the mean time since treatment was 18.9 ± 12 years. Over a third (35%) of survivors had reduced mouth opening (mean 29.3 ± 5.6 mm (range 16–35)). A significantly lower MMO was found in individuals treated ≤ 5 years compared to survivors treated > 5 years (p = 0.021). One or more DDD were registered in 30.4% of the survivors, with a significantly higher prevalence in individuals treated ≤ 5 years (p < 0.001). Hypodontia was the most prevalent type of DDD. There was no difference in DMFT score in relation to age at treatment. Oral dryness was not frequently reported or observed in these survivors. Conclusion Survivors of childhood MB/CNS-PNET are at risk of oral and dental late effects including reduced mouth opening and DDD. The risk is highest in survivors treated before the age of 5.