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Arch Otolaryngol Head Neck Surg. 2006;132:110.

	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

Diagnosis: Metastatic osteosarcoma of the external auditory canal

Our patient had a history of osteosarcoma of the proximal tibia that presented with painful swelling of the left lower leg area. There was no evidence of tumor recurrence or distant metastases until a mass inside the external auditory canal was found 1 year after the patient completed the treatment course.

Examples of metastatic tumors to the temporal bone presenting in the external auditory canal are extremely rare in the English-language literature. In a review of 165 cases of metastatic tumors involving the temporal bone, the most common sources were the breasts (29%), lungs (11%), prostate gland (8%), unknown primary origin (8%), and kidneys (6%).^1-2 Other sites, such as the esophagus, stomach, rectum, thyroid, cervix, vagina, urinary bladder, and larynx, have also been reported.^1-5 Metastatic tumors to the external auditory canal are even rarer. The incidence, therefore, remains unknown, perhaps owing to the lack of routine postmortem study of temporal . . . [Full Text of this Article]

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Arch Otolaryngol Head Neck Surg. 2006;132(1):109.
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