Spontaneous regression of osteochondromas.
Spontaneous regression of an osteochondroma is an infrequent event. In this report, two cases with spontaneous regression of osteochondromas are presented. The first case was a solitary osteochondroma of the pedunculated type involving the right proximal humerus in a 7-year-old boy. This lesion resolved over 15 months of observation. The second case was a 3-year-old girl with multiple osteochondromatosis, in whom sessile osteochondromas of the right tibia and left fibula regressed over 33 months. The mechanism of this phenomenon is discussed with a review of previous reports. Regarding treatment, careful observation may be acceptable for typical osteochondromas, especially in young children.
Hoshi
Manabu
M
Department of Orthopaedic Surgery, Yodogawa Christian Hospital, 2-9-26 Awaji, Higashi-Yodogawa-Ku, Osaka, 533-0032, Japan. hoshi@med.osaka-cu.ac.jp
Takami
Masatsugu
M
Hashimoto
Ryouji
R
Okamoto
Takashi
T
Yanagida
Ikuhisa
I
Matsumura
Akira
A
Noguchi
Kazuko
K
D001859:Bone Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology*; D002648:Child; D002675:Child, Preschool; D005260:Female; D005360:Fibula / Q000473:pathology; D006801:Humans; D006811:Humerus / Q000473:pathology; D008297:Male; D015831:Osteochondroma / Q000000981:diagnostic imaging / Q000473:pathology*; D018216:Osteochondromatosis / Q000000981:diagnostic imaging / Q000473:pathology*; D012075:Remission, Spontaneous; D013977:Tibia / Q000473:pathology; D014057:Tomography, X-Ray Computed