What causes a hamartoma?

Hamartomas result from the abnormal formation of normal tissue and sometimes occur sporadically and a few times as a part of a syndrome. Hamartoma is most likely due to a developmental error and may appear in several sites. It grows at the same rate as of the original tissue.

Are all hamartomas benign?

Hamartomas are noncancerous growths that can appear anywhere on the body. While seen as harmless, these benign tumors can grow to large sizes and cause pressure on surrounding tissues. Depending on where they grow externally or internally, hamartomas can cause life-threatening symptoms.

How fast do hamartomas grow?

The nodular shadow increased in size from 12 × 15 mm to 15 × 20 mm within five months. The calculated tumor doubling time (TDT) in our case was approximately 132.2 days. A malignant tumor was strongly suspected based on the rapid growth, and tumorectomy was thus performed.

What is a Leiomyomatous hamartoma?

Abstract Hamartoma is a tumour-like malformation appearing as a focal overgrowth of normal cells. Leiomyomatous hamartomas (LHs) are rare in the oral cavity and commonly seen in the Japanese and less than 40 cases have been reported in the Japanese and English literature.

What is a hamartoma in the oral cavity?

Hamartoma is a tumour-like malformation appearing as a focal overgrowth of normal cells. Leiomyomatous hamartomas (LHs) are rare in the oral cavity and commonly seen in the Japanese and less than 40 cases have been reported in the Japanese and English literature.

What is the pathophysiology of Japanese hamartoma?

In this type of hamartoma the presence of smooth muscle tissue dominates over other possible components. The original cases were reported in the Japanese literature and for that reason it is believed that this hamartoma is observed with greater frequency in Japan.

What is rhabdomyomatous (mesenchymal) hamartoma?

Rhabdomyomatous (mesenchymal) hamartoma presenting as haemangioma on the upper lip: A case report with immunohistochemical analysis and treatment with high-power lasers. Case Rep Dent 2013. 2013943953. [PMC free article][PubMed] [Google Scholar] 28. Rodrigues FA, Cysneiros MA, Rodrigues Jr R, Sugita DM.