A nurse is preparing for a skin care certification course and needs to correctly identify various lesions that may be seen on the skin. Which definitions are correct?

a. A papule is an elevated palpable solid mass.
b. A wheal is an elevated round, solid mass under the skin.
c. A vesicle is an elevated, round lesion filled with serum.
d. A cyst is an elevated, circumscribed lesion filled with fluid.
e. A nodule is an elevated solid mass.