A 24 year-old, 36 week pregnant woman presents to your pregnancy care center for the first time in her pregnancy. On examination,she is disproportionately tall, and the arm span exceeds height; has high palate, joint hypermobility, scoliosis and pectus excavatum. On further questioning, she reports she has an autosomal dominant connective tissue disorder due to a mutation in the fibrillin protein on chromosome 15. Of the following, which is the condition she most likely has?
