Cui Yingqiu, Mao Zhe, Liao Chunhui
Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, Guangdong 510120, P.R. China.
Oncol Lett. 2015 Jan;9(1):29-34. doi: 10.3892/ol.2014.2665. Epub 2014 Nov 4.
Melanotic neuroectodermal tumor of infancy (MNTI) is a rare, fast-growing, benign tumor originating from the neural crest. The tumor most often occurs during the first year of life. The predilection site of MNTI is the anterior maxilla, whereas lesions of the mandible are uncommon and account for only 6% of all cases. At present, the most common treatment for MNTI is surgical resection, however, tumor recurrence arises in 10-60% of cases. The optimal extent of surgical resection is a matter of debate; rapid growth and the possibilities of malignant transformation and metastasis indicate aggressive surgical resection. However, extensive resection may interfere with post-operative growth and development. The procedure should therefore preserve as much of the surrounding tissue as possible. The present case study examines a rare case of right-sided mandibular MNTI in a two-month-old female. The association between the tumor and the surrounding sclerotin, affected dental germ and the condition of the inferior alveolar nerve, were observed during the operative and post-operative periods. In addition, previous cases of MNTI were reviewed to evaluate the optimal scope of surgical resection.
婴儿黑色素神经外胚层肿瘤(MNTI)是一种罕见的、生长迅速的良性肿瘤,起源于神经嵴。该肿瘤最常发生在生命的第一年。MNTI的好发部位是上颌前部,而下颌骨病变不常见,仅占所有病例的6%。目前,MNTI最常见的治疗方法是手术切除,然而,10%-60%的病例会出现肿瘤复发。手术切除的最佳范围存在争议;肿瘤的快速生长以及恶变和转移的可能性表明需要进行积极的手术切除。然而,广泛切除可能会干扰术后的生长发育。因此,手术应尽可能保留周围组织。本病例研究考察了一名两个月大女性右侧下颌骨MNTI的罕见病例。在手术和术后期间观察了肿瘤与周围硬骨、受影响的牙胚以及下牙槽神经的状况。此外,回顾了既往MNTI病例以评估手术切除的最佳范围。