Reddy E Rajendra, Kumar M Suresh, Aduri Rajesh, Sreelakshmi N
Department of Pedodontics & Preventive Dentistry, Kamineni Institute of Dental Sciences, Narketpally, Nizamabad, Andhra Pradesh, India.
Department of Oral and Maxillofacial Surgery, Meghna Institute of Dental Sciences, Nizamabad, Andhra Pradesh, India.
Contemp Clin Dent. 2013 Oct;4(4):559-62. doi: 10.4103/0976-237X.123091.
Melanotic neuroectodermal tumor of infancy (MNTI) is a relatively uncommon osteolytic-pigmented neoplasm that primarily affects the jaws of infants. The early onset and its rapid disfiguring spread necessitate early diagnosis. A 4-month-old male child reported with the complaint of swelling in the right back tooth region of the upper jaw, which rapidly increased in size causing disfigurement of the face. Radiographic examination showed a diffuse osteolytic radiolucent lesion in the right maxilla and displacement and dysmorphic changes in the developing primary tooth buds. Wide surgical excision was performed under general anesthesia. Histopathological report revealed characteristic large pigmented epitheloid cells (melanocyte like cells). The biphasic tumor cell population arranged in a background of fibrous connective tissue stroma is suggestive of MNTI involving the cancellous bone. Early diagnosis and management of such aggressive tumors precludes significant morbidity of the patient.
婴儿黑色素神经外胚层肿瘤(MNTI)是一种相对罕见的溶骨性色素性肿瘤,主要累及婴儿的颌骨。其发病早且迅速致面容毁损性扩散,因此需要早期诊断。一名4个月大的男童因上颌右侧后牙区肿胀前来就诊,肿胀迅速增大导致面部畸形。影像学检查显示右上颌有弥漫性溶骨性透射区,正在发育的乳牙牙胚移位且形态异常。在全身麻醉下进行了广泛的手术切除。组织病理学报告显示有特征性的大色素上皮样细胞(黑素细胞样细胞)。在纤维结缔组织基质背景中排列的双相肿瘤细胞群提示MNTI累及松质骨。对这类侵袭性肿瘤进行早期诊断和治疗可避免患者出现严重的发病情况。