Nakaso Soma, Ishii Nobuaki, Akimoto Masataka, Ogawa Rei
Department of Plastic Surgery, Nippon Medical School Chibahokusoh Hospital, Inzai, Japan.
Department of Plastic, Reconstructive and Aesthetic Surgery, Nippon Medical School, Tokyo, Japan.
Case Rep Dermatol. 2024 Dec 11;17(1):26-32. doi: 10.1159/000543125. eCollection 2025 Jan-Dec.
Osteoma cutis is a rare benign cutaneous nodule characterized by ectopic bone formation in the dermis or subcutaneous tissue. While most cases of osteoma cutes are secondary to inflammation, tumors, or scars, there are rare primary cases with no apparent preceding lesion. Primary osteoma cutis can be broadly classified into two categories: those associated with metabolic abnormalities, such as pseudohypoparathyroidism and Albright's hereditary osteodystrophy, and those without such underlying conditions in a more specific sense.
We present a case of primary osteoma cutis specifically located on the forehead in a young woman. Histopathological findings revealed a nodule of bone tissue within the dermis, along with some contiguous cartilage tissue. The patient underwent preoperative ultrasonography, computed tomography, and magnetic resonance imaging.
We report this case because there have been no reports of primary osteoma cutis with complete preoperative imaging findings to the best of our knowledge.
皮肤骨瘤是一种罕见的良性皮肤结节，其特征是在真皮或皮下组织中形成异位骨。虽然大多数皮肤骨瘤病例继发于炎症、肿瘤或瘢痕，但也有罕见的原发性病例，无前明显病变。原发性皮肤骨瘤可大致分为两类：一类与代谢异常相关，如假性甲状旁腺功能减退和奥尔布赖特遗传性骨营养不良，另一类在更特定意义上无此类潜在疾病。
我们报告一例原发性皮肤骨瘤，具体位于一名年轻女性的前额。组织病理学检查结果显示真皮内有一个骨组织结节，伴有一些相邻的软骨组织。患者术前行超声、计算机断层扫描和磁共振成像检查。
据我们所知，此前尚无原发性皮肤骨瘤术前完整影像学检查结果的报告，故我们报告此病例。
