Croup usually develops suddenly and the child, well on gtyng to bed, might wake during the night with the typical croupy cough — a hard “brassy” sound — and have difficulty in breathing. The larynx is swollen and there is marked difficulty in breathing in. In asthma, by contrast, there is difficulty in breathing out. [...] pillwatch.com

When cancer cells lodge in lymph nodes or other parts of the body, they don’t always immediately start multiplying to form an obvious secondary growth. Cancer cells have the ability to lie dormant, sometimes for many years. You could think of them as seeds which are waiting for the right conditions before they start growing. [...]