Biomedical subjects

O Arenas Britez

Publications and source records attributed to O Arenas Britez.

2 recordsLinked to original sources

PubMed2005

[Primitive neuroectodermal tumor/extraosseus Ewing sarcoma of the temporal bone].

The term primitive neuroectodermal tumor (PNET) should be included in the differential diagnosis of small round blue cell tumors, which come from the neural crest and explain their neuroectodermal character. This is one of the most indifferentiated histological types of malignant tumors. In the PNET family, we high light the Ewing's Sarcoma, that is frecuently located in bony sites and has a less frequent localization in soft tissues. We focus on one atypic case of PNET/Extraosseus Ewing's Sarcoma that involves the external auditory canal and infiltrates the temporal bone. Surgery followed by postoperative chemotherapy and radiation offers the best local control of the disease.

Adult↗

PubMed2004

[Malignant tumours of the external auditory canal and of the middle ear].

OBJECTIVES: To review our experience and results in the treatment of a low incidence pathology such as the malignant ear tumors. METHODS: The study reviewed 36 patients with malignant tumors of the EAC and middle ear treated between 1977 and 2000 in our hospital, excluding cancer of the pinna, metastatic tumours and sarcomas. It was used the staging system proposed by the M.D. Anderson. RESULTS: The most common histological type in our series is the squamous cell carcinoma, and the otorrhea and pain are the primary symptoms in 100% of patients. Surgery combined with radiotherapy obtained a 41% 5-year survival rate. CONCLUSIONS: The staging system is an important prognostic factor and it is important an early diagnosis to achieve a better therapeutical result.

Adult↗