Quantitative recurrence indicators are defined by measuring the first entrance time of the orbit of a point x in a decreasing sequence of neighborhoods of another point y. It is proved that these recurrence indicators are a.e. greater or equal to the local dimension at y, then these recurrence indicators can be used to have a numerical upper bound on the local dimension of an invariant measure.

calcifying epithelial odontogenic tumor (ceot) is a rare benign, but locally infiltrating odontogenic neoplasm. it accounts for less than 1% of all odontogenic tumors. this is a case report of recurrent ceot in the maxilla. a 35-year-old patient reported after three years of surgical excision of the lesion, with a recurrence. it is of particular concern because of its anatomic location in the m...

Pleomorphic adenoma is the most common neoplasm of the parotid gland. It is associated with the risk of recurrence and malignant transformation. Tumor spillage, incomplete excision, and violation of the tumor pseudocapsule are considered the only proven factors contributing to recurrent disease. The upward spread of recurrent pleomorphic adenoma along the fallopian canal via the stylomastoid fo...

Odontogenic keratocyst has been renamed as by world health organization in 2005. It is a benign intraooseous neoplasm of the jaw. They develop from the dental lamina remenants in the mandible and maxilla.Odontogenic keratocyst is of particular interest because of its recurrence rate and aggressive behavior. We present a case in a middle aged lady patient.

Meningiomas are the most common neoplasm of central nervous system. Usually benign and generally discovered incidentally at imaging, meningiomas can also be responsible for severe neurological symptoms deficits, with potentially high morbidity non-negligible mortality. Therefore, neuroimaging plays a crucial role in diagnosis, therapeutic planning, long-term surveillance, early detection both r...

Melanotic neuroectodermal tumour of infancy is a rare neoplasm of neural crest origin, predominantly affecting the anterior maxilla of infants. Treatment generally consists of surgical excision. Long-term follow-up is important since recurrence and malignant transformation have been reported. The literature about melanotic neuroectodermal tumour of infancy is reviewed and a case occurring in a ...

Ewing's sarcoma (ES) is a malignant, small-round-cell neoplasm that normally affects the long bones of the limbs or the pelvis. Primary orbital ES of the skull has been considered extremely rare. We describe the case of a 19-year-old female patient with primary ES originating from the inferior orbital rime and, shortly after tumor resection, local recurrence to the maxillary sinus.

Carcinoma ex pleomorphic adenoma is an exceedingly rare neoplasm of the minor salivary gland. Prognostic parameters are recurrence, capsular invasion, and metastasis. We present a case of carcinoma ex pleomorphic adenoma with pulmonary metastasis to emphasize that patients treated for this condition should be investigated for distant metastasis.

Calcifying epithelial odontogenic tumor (Pindborg tumor), is a rare benign odontogenic neoplasm representing about 0.4-3% of all odontogenic tumors. This tumor more frequently affects adults in the age range of 20-60 years, with a peak incidence in the 5th decade of life. Calcifying epithelial odontogenic tumour has a much lower recurrence rate than ameloblastoma and malignant transformation, a...

Extramedullary plasmacytoma is a rare neoplasm characterized by monoclonal proliferation of plasma cells and accounts for about 3 - 5% all cell neoplasms including bone extramedullary tumors. Plasmacytomas are more predominant in males who the 5th – 6th decade. It most often located head neck region. usually affects upper respiratory tract 80% cases 15% spread to cervical lymph nodes. They pres...