This book was prepared as a continuity of our previous book (Otorhinolaryngology, Head and Neck Surgery: Board preparation), as a means of teaching and learning by inquiring-self testing carried out conscientiously is an effective way of acquiring knowledge. A mistake or wrongly responded question should encourage the board candidate to return to his textbooks to determine the correct answer.We hope the book will be of advantage to an interested undergraduates and for the board prepared students in otolaryngologyas well as house officers training in this field. We hope also that it may help general- practitioner trainees, for whom otolaryngology presents a significant workload.We advise the above personnel to not be dependent on these types of books, because we know that this book must be harmonizing to standard textbooks but our aspirations remain that the student will gain even greater benefit from his efforts by spending some time in self-assessment.