TY  - JOUR
PY  - 1995//
TI  - Acquired coccygeal nodule due to repeated stimulation by a bicycle saddle
JO  - Journal of dermatology
A1  - Nakamura, A.
A1  - Inoue, Y.
A1  - Ishihara, T.
A1  - Matsunaga, W.
A1  - Ono, T.
SP  - 365
EP  - 369
VL  - 22
IS  - 5
N2  - Four Japanese male students, aged 14, 16, 18 and 19, were found to have a nodule in their coccygeal regions. The typical lesion was a rugby-ball-shaped, normal-colored or slightly erythematous nodule measuring 5 to 6 cm in its long axis. Histopathologically, it showed hyperplasia of collagen fibers and slight acanthosis. All four students rode to school by bicycle over long distances and long periods; three of them developed the nodule after they started bicycle riding to school. We found that the nodule shape corresponded to the saddle of the bicycle. X-ray abnormalities included bending or anterior dislocation of the coccyx in all cases and spina bifida in two cases. These nodules may have developed as a result of irritation of this region by the saddle of the bicycle.<p /> <p>Language: en</p>
LA  - en
SN  - 0385-2407
UR  - http://dx.doi.org/
ID  - ref1
ER  -