- CONCLUSIONS: Although congenital smooth muscle hamartomas of the conjunctiva have been rarely reported in the literature, this is the first described case of a smooth muscle hamartoma presenting in adolescence in the bulbar conjunctiva. (bvsalud.org)
- Our final diagnosis was simple congenital hamartoma of RPE. (bvsalud.org)
- Choristomas, a form of heterotopia, are masses of normal tissues found in abnormal locations. (wikipedia.org)
- The two can be differentiated as follows: a hamartoma is disorganized overgrowth of tissues in their normal location (e.g. (wikipedia.org)
- A hamartoma (from Greek hamartia, meaning "fault, defect," and -oma, denoting a tumor or neoplasm) is a benign (noncancerous) tumorlike malformation made up of an abnormal mixture of cells and tissues found in areas of the body where growth occurs. (medscape.com)
- A choristoma is simply a collection of microscopically normal cells or tissues in an abnormal location. (radiopaedia.org)
- This is different to a hamartoma which is derived only from local tissues. (radiopaedia.org)
- Hamartomas are malformations of mucosa, consisting of disorganized normal tissues. (czytelniamedyczna.pl)
- The term of hamartoma corresponds to a non-neoplastic tumour, consisting of disorganized normal tissues and characteristic of the site of manifestation of the tumour. (czytelniamedyczna.pl)
- RESULTS: Histopathologic examination disclosed morphologically benign smooth muscle bundles within the substantia propria that stained positively for smooth muscle actin, vimentin, and desmin consistent with the diagnosis of a smooth muscle hamartoma. (bvsalud.org)
- BACKGROUND: Rhabdomyomatous mesenchymal hamartomas (RMHs), also termed striated muscle hamartomas, are rare benign tumors of skin and subcutis, which mostly occur at birth with a predilection for the head and neck. (bvsalud.org)
- Peutz-Jeghers polyps), while a choristoma is normal tissue growth in an abnormal location (e.g., osseous choristoma, gastric tissue located in distal ileum in Meckel diverticulum). (wikipedia.org)
- The manifestation of hamartomatous polyps is characteristic of juvenile polyposis syndrome, Peutz-Jeghers' syndrome, hereditary mixed polyposis syndrome and PTEN hamartoma tumour syndrome. (czytelniamedyczna.pl)
- The following are hamartomatous diseases: juvenile polyposis syndrome (JPS), Peutz-Jeghers syndrome (PJS), Hereditary Mixed Polyposis Syndrome (HMPS) and the syndrome of hamartomatous tumours linked to the PTEN gene mutations (PTEN hamartoma tumour syndrome - PHTS). (czytelniamedyczna.pl)
- Uncomplicated hamartomas have no tendency to grow, except as determined by the normal growth controls of the body. (medscape.com)
- PURPOSE: The aim of this study was to describe a novel presentation of conjunctival smooth muscle hamartoma and review the histopathologic findings of this entity. (bvsalud.org)
- Overproduction of growth hormone-releasing hormone (GHRH) by certain hypothalamic tumors (hamartomas, choristomas, gliomas, and gangliocytomas) can cause acromegaly by inducing hyperplasia of GH-secreting pituitary cells. (medscape.com)
- Hypothalamic hamartomas, ganglioneuromas, and choristoma can cause excessive production of growth hormone-releasing hormone (GHRH) , leading to acromegaly. (mdbriefcase.com)
- 1. THE "-OMAS" and "-OPIAS": Targeted and Philosophical Considerations Regarding Hamartomas, Choristomas, Teratomas, Ectopias, and Heterotopias in Pediatric Otorhinolaryngologic Pathology. (nih.gov)
- Peutz-Jeghers polyps), while a choristoma is normal tissue growth in an abnormal location (e.g., osseous choristoma, gastric tissue located in distal ileum in Meckel diverticulum). (wikipedia.org)
- [1] Choristomas are histologically normal tissue found at an abnormal location, in contrast to hamartomas which are benign (not cancer) growths made up of an abnormal mixture of cells and tissues normally found in the body where the growth occurs. (eyewiki.org)
- [3] As choristomas, they are normal tissue and do not harbor malignant potential. (eyewiki.org)
- Epidermal nevi have also been classified as "hamartomas", a rather vague and ambiguous term for benign tumor-like malformations that can affect any area of the body. (skincarehealthcenter.com)
- 7. Malformations, choristomas, and hamartomas of the gastrointestinal tract and pancreas. (nih.gov)
- 18. Hamartomas and other tumor-like malformations of the lungs and heart. (nih.gov)
- 6. Hamartomas of skin and soft tissue. (nih.gov)
- Hamartomas" are composed of mature cells and tissue normally found in the affected area. (skincarehealthcenter.com)
- 10. Epithelial choristomas and teratomas of the tongue. (nih.gov)
- 11. Cystic and glial mixed hamartoma of the tongue. (nih.gov)
- Uncomplicated hamartomas have no tendency to grow, except as determined by the normal growth controls of the body. (medscape.com)
- 4. Hamartoma of the Oral Cavity with Ectopic Meningothelial Elements in Infants: A Rare Entity with Report of Two Cases. (nih.gov)