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作者提出主要由颗粒细胞组成的口腔肿瘤和瘤样病变不多见。先天性牙龈瘤是一个良性软组织瘤样肿物,常在出生时附着于切牙区的牙槽粘膜,女多于男,绝大多数见于上颌。颗粒细胞肌母细胞瘤最常发生在舌。造釉细胞瘤和造釉细胞纤维瘤偶尔也含有颗粒细胞。上述各种口腔病变颗粒细胞的来源不清楚,曾有很多理论提出如牙源性,纤维母细胞性,组织细胞性,肌母细胞性和神经性。最近,Rohrer&Young(1982)认为先天性龈瘤中的颗粒细胞是由小血管周围细胞来的。作者描述了在一个死婴中看到的,
The authors suggest that oral tumors and tumor-like lesions, consisting mainly of granulosa cells, are rare. Congenital gingival tumor is a benign soft tissue tumor-like mass, often attached to the alveolar mucosa of the incisor area at birth, with more women than men, most of whom are found in the upper jaw. Granulosa cell myoblastoma occurs most often in the tongue. Ameloblastomas and ameloblastomas occasionally contain granulosa cells. The origin of the various dental lesion granulosa cells mentioned above is unclear, and there have been many theories such as odontogenic, fibroblastic, histiocytic, myoblastic, and neurogenic. Recently, Rohrer & Young (1982) thought that the granulosa cells in congenital tumors were derived from the cells around the small blood vessels. The author described what he saw in a dead baby.