Final answer:
Recurrent respiratory infections such as chronic sinusitis and bronchiectasis, along with situs inversus and infertility, are symptoms of Primary Ciliary Dyskinesia, a rare genetic disorder affecting the function of cilia.
Step-by-step explanation:
Recurrent respiratory infections such as chronic sinusitis and bronchiectasis, situs inversus with dextrocardia, and infertility are characteristic symptoms of a disease known as Primary Ciliary Dyskinesia (PCD). PCD is a rare genetic disorder caused by defects in the action of cilia lining the respiratory tract, the structure of which is vital for moving mucus towards the mouth to be expelled or swallowed. Persons with PCD have cilia that either do not function properly or are structurally abnormal, which leads to a build-up of mucus and bacteria in the lungs, sinuses, and ears, causing chronic infections. The symptom of situs inversus occurs in approximately 50% of individuals with PCD, where their internal organs are reversed or mirrored from their normal positions. In terms of infertility, the same defects that impair ciliary function in the respiratory system can affect the motility of sperm in males and the ability to move the egg through the fallopian tubes in females.