A. Multiple myeloma is a malignant, clonal disorder of plasma cells that originates in the bone marrow. Itâs a relatively common disorder, accounting for 1% of all malignancies and 10% of all hematologic malignancies in adults.
torsion, n 1. , motion or state of torque in which one end of an anatomical component is twisted about its longitudinal axis as the opposite end is either immobile or moves in the opposite direction.
Testicular torsion is more common in newborns and after puberty. Torsion can also occur in the testicular appendage, a small piece of basically functionless tissue that is left over from development of the embryo. Like testicular torsion, the twisting of the testicular appendage can block blood flow, causing pain. Torsion of the testicular appendage is more common among boys aged 7 to 14. Epididymitis (see Epididymitis and Epididymo-orchitis ) is inflammation of the coiled tube on top of the testis in which sperm mature.