A closed, abnormally developed sac containing fluids or morbid matter is called a what?

A closed, abnormally developed sac containing fluids or morbid matter is called a what?

• A. Crust
• B. Keloid
• C. Cyst
• D. Fissure

Answer: (C)

A cyst is defined by being a closed sac that is abnormally developed and contains fluids or other material. That “closed sac” feature is what distinguishes it from other skin findings. A crust is dried residue on the surface of the skin, not a sac. A fissure is a crack or split in the skin. A keloid is an overgrowth of scar tissue. Because this description emphasizes a closed sac with fluid or material inside, the term that fits best is cyst.

A cyst is defined by being a closed sac that is abnormally developed and contains fluids or other material. That “closed sac” feature is what distinguishes it from other skin findings. A crust is dried residue on the surface of the skin, not a sac. A fissure is a crack or split in the skin. A keloid is an overgrowth of scar tissue. Because this description emphasizes a closed sac with fluid or material inside, the term that fits best is cyst.