Neuromuscular choristoma (NMC) is a rare benign tumor involving nests of myocytes and neural elements that primarily affects peripheral nerves, much less commonly can present intracranially, cranial nerves. It has previously been called hamartoma or triton tumor. Patients typically in the first two decades life with nerve palsies generalized neurologic symptoms.

developmental midline perinasal masses in children are rare lesions specifically in association with choristomas. we encountered a 3-year-old boy with epiphora, a striking mass on the nasal bridge and ipsilateral nasal hypoplasia. ct scan imaging showed multiple calcified areas within the tumor in addition to linear defect in frontal bone, hypoplastic left ethmoidal sinus and left nasal cavity,...

A six-year-old castrated male Maltese dog presented to a private animal clinic with a mass on the dog's lower lip without any other clinical signs. The mass (3 × 2 × 2 cm) was whitish and grossly well circumscribed, and a histopathological examination revealed that the mass was composed of normal cartilage tissue surrounded by fibrous connective tissues. Based on the gross findings, histopathol...

The ectopic liver (or choristoma) is a rare condition found during autopsy or abdominal exploration for various indications. The authors report two cases of ectopic liver found during laparoscopic cholecystectomy for acute cholestytis. The ectopic liver tissue has been reported to develop in several sites as thoracic cavity, gastrohepatic ligament, adrenal glands, pancreas, esophagus and, above...

Madam, The term “choristoma” is applied to microscopically normal tissues present in an abnormal location. Although it is not neoplastic but a “heterotropic” rest of cells, it produces a tumor like mass. In the upper aerodigestive tract, heterotropic islands of mature hyaline cartilage are mainly seen in the nose and nasopharynx. These ‘cartilaginous choristomas” are however , very rare in the ...

PURPOSE To establish a new scoring system for limbal dermoid, in order to unify the diagnostic criteria and assess the prognosis. METHODS A retrospective study was conducted on 261 patients with limbal dermoid. The basic information, clinical features, and pathology of dermoids were recorded, and the prognosis at 1 year after keratoplasty was assessed at follow-up. A new visual scoring system...