Acupuncture therapy has been widely performed by staffs of
oriental medicine in
Korea, and intramuscular stimulation (IMS)
therapy has been introduced recently and used for controlling myofascial
pain in the field of
orthopedics,
rehabilitation, and
pain clinics. To penetrate
human tissues, relatively long
needles are used in both
procedures and these these may have some
risks to
puncture blood vessels. However, there were few
reports about sequelae or
complications after such
procedures in Korean
literatures. Recently, we experienced two cases of perirenal
hematoma in
patients without
blood coagulation abnormalities (one case induced by
acupuncture in
oriental medicine clinic, and the other case induced by IMS in orthopedic clinic and was also accompanied by perirenal
abscess).