Primary tumors of the neurohypophysis and infundibulum are extremely rare. Two types are known: glioma, also known as pilocytic astrocytoma or pituicytoma; and granular cell tumor, also known as choristoma, myoblastoma, or granular cell myoblastoma. Several authors [1-7] suggest that they are a fairly common incidental finding at autopsy, but reports of masses large enough to cause symptoms are...

Neuromuscular Choristoma (NMC) is a rare, benign pseudo tumor that most commonly affects children in the first decade of life. NMC usually derives from a large nerve trunk, and is also known as neuromuscular hamartoma or neuromuscular rhabdomyoma or benign triton tumor [1]. It is composed of skeletal muscle and neural elements [1]. Due to its rarity, there is limited literature on this tumor ty...

The ectopic occurrence of skeletal muscles in skin is an unusual condition. These lesions are named rhabdomyomatous mesenchymal hamartoma now. More accurately speaking, this entity should be called “cutaneous rhabdomyomatous choristoma” because the skeletal muscle is not a normal element in skin. We described a case occurring in perineal region associated with amniotic band syndrome, imperforat...

The etiology and histogenesis of granular cell tumor are still debated. Granular cell tumor of the newborn is considered to be a different entity than the adult form of this lesion with different immunohistochemical features. We present a case of a rare gingival granular cell tumor in a newborn and review the literature. Gingival granular cell tumor must be clinically differentiated from terato...