Intraocular lacrimal gland tissue is an extremely rare choristoma. A newborn girl was seen with a fleshy, vascular tumor arising from the peripheral iris and the anterior chamber angle. The tumor was treated with topical steroids on suspicion of a juvenile xanthogranuloma; later, it grew slightly and a secondary glaucoma developed. Histopathological examination of the resected tumor showed lacr...

Epidermal choristoma is a rare, congenital lesion in which islands of ectopic skin are found within the oral cavity. They present as pigmented macules or papules on tongue. Histologic appearances characteristic and benign. We three cases review current literature recommend observation rather than complete excision should be considered reasonable management option.

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.

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 ...