Background: Mucosal Schwann cell hamartoma is a newly recognized disease entity that describes lesions which share some features but are distinct from schwannomas and neurofibromas. This mesenchymal lesion, consisting of a proliferation of Schwann cells in the lamina propria and a strong positivity for the S-100 protein, should be differentiated from other similar lesions because it exists sole...

We report a case of proliferative retinopathy complicated with retinal hamartoma in a tuberous sclerosis patient. This study involved a 16-year-old female patient who was diagnosed as having tuberous sclerosis at birth. Ophthalmic examination revealed retinal hamartoma surrounding the optic disc in both eyes. Vitreous surgery involving a vitrectomy and resection of the proliferative membranes w...

Pulmonary hamartomas are more common than expected because they are usually asymptomatic and are either discovered on routine chest radiography or when they are noted incidentally in approximately 0.25 % of autopsies. In contrast, pulmonary fibroleiomyomatous hamartoma, which consists of interlacing bundles of smooth muscle cells admixed with fibrous tissue and numerous tubular or cleft-like ep...

Neuromuscular and vascular hamartoma has been described as a specific, if rare, stricturing condition of the small intestine. In this paper four cases with very similar macroscopic and histological features to those described as 'neuromuscular and vascular hamartoma' are presented. In three of the patients there was an earlier histologically proven diagnosis of Crohn's disease of the small inte...

Brunner's gland hamartoma is a rare benign small bowel neoplasm and most lesions are small and asymptomatic. However, large hamartoma-related obstructive symptoms and hemorrhage related to tumor ulceration manifest as hematemesis or melena. The exact pathogenesis if these lesions is not well known, but they are thought to be frequently associated with Helicobacter pylori infections and chronic ...

A 17-month-old boy was evaluated for a midline mass on his chin. The mass was anchored to the mentalis muscle with a stalk-like structure. The pathological diagnosis of the mass was rhabdomyomatous mesenchymal hamartoma. This is the first report of rhabdomyomatous mesenchymal hamartoma presenting as a midline chin mass in Korean pediatric patients.

Chest wall hamartoma of infancy is a rare lesion, usually presenting in the first year of life. Recent literature has recommended conservative management of asymptomatic children, yet most continue to undergo surgical resection irrespective of their symptom status. We report a case of spontaneous regression of a chest wall hamartoma of infancy, supporting recommendations for conservative manage...

A case of respiratory epithelial adenomatoid hamartoma of the maxillary sinus is reported. Glandular hamartomas involving the sinonasal tract have received only limited documentation in the literature. The differential diagnosis of adenomatoid hamartoma includes schneiderian papilloma of the inverted type and adenocarcinoma. Limited but complete surgical resection is the treatment of choice.

A renal myoepithelial hamartoma presented as a lucent filling defect with gross hematuria in an adult female. Preoperative studies caused conflicting impressions. The predominance of smooth muscle and incorporated tubuloepithelial elements characterize the tumor as a hamartoma of myoepithelial type. Pertinent review of the literature confirms the rarity of this lesion in adults.

Lingual hamartoma is a rare tongue mass, primarily diagnosed in childhood. In most cases in the literature, the masses were surgically removed without preoperative imaging. There are only 3 cases reported in the clinical literature that describe preoperative imaging findings. We report the clinical and imaging findings in an infant with lingual hamartoma and review the literature.