A 3-year-old boy is brought to your clinic by his father for a general well-child examination. Upon physical examination, you note that the height of the boy is in the third percentile, whereas the weight of the child is in the first percentile. There are no abnormalities in the child. However, you notice that the boy is coughing continuously.

During a short chat with father, he tells you that since infancy, the boy has been treated several times due to pneumonia and sinus infections. Upon asking further about his health, the father tells you that the boy’s stools are greasy, loose, and mucousy. *This case is from the Editorial team of Docplexus and is meant for educative purposes only.