Bizarre Parosteal Osteochondromatous Proliferation of the Skull in a Young Male

Radu Baz, Cosmin Niscoveanu

Pozitron Medical Investigations, Constanta, Romania.

DOI: 10.4236/ojrad.2013.33022                

Abstract

Bizarre parosteal osteochondromatous proliferation (BPOP), as defined by Nora and colleagues in 1983 (also called Nora lesion), is a rare lesion. About 160 cases of BPOP have been presented in the literature to date. The lesion is an exophytic outgrowth from the cortical surface consisting of bone, cartilage and fibrous tissue. These types of lesions have been reported mostly in the hands and feet. Localization at the level of the skull is extremely rare. We report a case of a young man with multiple Nora’s lesions with atypical localization in the skull and mandible.

Keywords

BPOP; Nora; CT; Skull

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	F. E. Nora, D. C. Dahlin and J. W. Beabout, “Bizarre Parosteal Osteochondromatous Proliferation of the Hands and Feet,” The American Journal of Surgical Pathology, Vol. 7, No. 3, 1983, pp. 245-250. doi:10.1097/00000478-198304000-00003
[2]	M. F. Meneses, K. K. Unni and R. G. Swee, “Bizarre parosteal Osteochondromatous Proliferation of Bone (Nora’s Lesion),” The American Journal of Surgical Pathology, Vol. 17, No. 7, 1993, pp. 691-697. doi:10.1097/00000478-199307000-00006
[3]	L. Abramovici and G. C. Steiner, “Bizarre Parosteal Osteochondromatous Proliferation (Nora’s Lesion): A Retrospective Study of 12 Cases, 2 Arising in Long Bones,” Human Pathology, Vol. 33, No. 12, 2002, pp. 1205-1210. doi:10.1053/hupa.2002.130103
[4]	M. Boussouga, A. Harket, N. Bousselmame and K. Lazrak, “Bizarre Parosteal Osteochondromatous Proliferation (Nora’s Lesion) of the Forefoot,” Acta Orthopaedica Belgica, Vol. 74, No. 4, 2008, pp. 562-565.
[5]	H. M. Dashti, J. D. Reith, B. J. Schlott, E. L. Lewis, D. M. Cohen and I. Bhattacharyya, “Bizarre Parosteal Osteochondromatous Proliferation (Nora’s Lesion) of the Mandible. A Rare Bony Lesion,” Head and Neck Pathology, Vol. 6, No. 2, 2012, pp. 264-269. doi:10.1007/s12105-011-0311-x
[6]	J. Q. Ly, L. T. Bui-Mansfield and D. C. Taylor, “Radiologic Demonstration of Temporal Development of Bizarre Parosteal Osteochondromatous Proliferation,” Clinical Imaging, Vol. 28, No. 3, 2004, pp. 216-218. doi:10.1016/S0899-7071(03)00235-3
[7]	B. Moretti, A. DiGiovanni, F. Martino, L. Moretti, et al., “Nora’s Lesion. Clinical and Therapeutic Consideration,” La Chirurgia degli Organi di Movimento, Vol. 92, No. 1, 2008, pp. 45-49. doi:10.1007/s12306-008-0038-3
[8]	F. Garcia-Alvarez, A. F. Lacleriga, A. L. Bueno, T. Castiella and F. Seral, “Bizarre Parosteal Osteochondromatous Proliferation. Difficulty in Diagnosis,” La Chirurgia degli Organi di Movimento, Vol. 84, No. 2, 1999, pp. 179-182.
[9]	S. Bandiera, P. Bacchini and F. Bertoni, “Bizarre Parosteal Osteochondromatous Proliferation of Bone,” Skeletal Radiology, Vol. 27, No. 3, 1998, pp. 154-156. doi:10.1007/s002560050355
[10]	E. Dhondt, L. Oudenhoven, S. Khan, et al., “Nora’s Lesion, a Distinct Radiological Entity?” Skeletal Radiology, Vol. 35, No. 7, 2006, pp. 497-502. doi:10.1007/s00256-005-0041-9