Friday, September 12, 2014

Parietal Bone Metastasis of Rectal Adenocarcinoma as an Initial Diagnosis of Recurrence: Case Report

Colorectal cancer (CRC) is a most common and lethal disease of the gastrointestinal tract [1]. CRC can usually spread by lymphatic and hematogenous routes. The most common metastatic sites are the regional lymph nodes, liver, lungs, and peritoneum [1]. Uncommon metastasis of CRC were described such as skin, muscles, skull and thyroid [2-6]. Involvement of unusual sites with metastasis frequently occurs in the presence disseminated disease. Thus, the patient presented with widespread metastasis had poor prognosis [4]. Although all types of tumors lead to metastasis to skull hematogenous route, breast cancer and lung cancers are associated with the highest rate, skull metastases of CRC are quite rare [5]. Parietal bone metastasis without vertebral bone metastasis from CRC is an unexpected situation. The most common presenting symptom of skull metastases is a visible, localized swelling of skull produced by growing tumor [7]. Herein, we report a case of patient with a visible, localized swelling of skull.

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