2 Histopathologically, lesions are composed of loose fibrous connective tissue stroma having stellate-shaped fibroblasts with areas of myxoid degeneration resembling dental papilla covered by peripheral columnar epithelium which itself resembles inner enamel epithelium (covering of columnar epithelium is absent in odontogenic myxomas
and odontogenic fibromas).
Selected myxoid tumors: myxoma
(A), cellular myxoma
(B), nodular fasciitis (C), schwannoma (D), low-grade myxofibrosarcoma (E), and high-grade myxofibrosarcoma (F) (hematoxylin-eosin, original magnification X100 [A through F]).
The odontogenic nature of the myxomas
has been challenged by some authors because of the appearances, whilst consistent with odontogenic ectomesenchyme, could also represent a more primitive fibroblastic or undifferentiated tissue.
Symptoms from a cardiac myxoma
are more pronounced when the myxomas
are left-sided, racemosus, and over 5 cm in diameter .
is a locally aggressive, benign tumor with variable radiographic appearances.
are thought to derive from multipotential mesenchymal cells, and have a variable macroscopic appearance ranging from soft and friable to smooth and bosselated.
The short duration but moderate intensity of symptoms suggested atrial myxoma
- the commonest benign cardiac tumour2 while thymic tissue consistency and its involvement and compression of underlying structures hinted towards malignancy.
Central Nervous System Manifestations of Cardiac Myxoma
and angiomyxomas of the orbit: a clinicopathologic study of 6 cases.
Due to its nonexclusive histological features, this lesion is often confused with other entities, such as hyperplastic dental follicles, odontogenic myxomas
, and desmoplastic fibromas, which highliaght the importance of clinical pathological correlation in the diagnosis of odontogenic fibromas.
were the most prevalent heart tumor found during pathological studies.
are rare, benign neoplasms apparently arising from the mesenchymal portion of the tooth-forming unit known as the dental papillae/dental sac.
This tumor must be differentiated from other types of lesions including myxomas
, true cardiac lipomas, liposarcomas, parietal thrombi, metastatic tumors and amyloidosis that appear as septal tumor mass.
Experience in the surgical handling of heart myxomas
in Hospital Civil de Guadalajara, from 2004 to 2011
This systemic and lethal infection is characterized by a large myxoma
at the inoculation site, a leonine facies caused by edema, and numerous secondary myxomas