metastatic lesions represent 1-8% of all malignant tumors of the mouth and jaws, which are regarded as rare sites of metastases from different primary tumors. metastases in mouth soft tissue are also rare, and within these it is on the gums where they more frequently occur. primary tumors which metastasize to the mouth are most commonly: lung, breast, and kidney. clear cell carcinoma is the mos...

background: ovarian cancer is the most common cause of cancer death worldwide. incidence of ovarian cancer is more common in postmenopausal women. premenopausal onset is rare and the present study described two cases of ovarian clear cell tumors in young women. case presentation: the patients presented with pelvic mass which was confirmed by sonography and laparotomy and final diagnosis was mad...

Hyalinizying clear cell carcinoma is a rare tumor which affects women more than men and is more common in minor salivary glands. The purpose of this paper was to describe a case of hyalinizing clear cell carcinoma of buccal vestibule in a 55-year-old woman. It is important to differentiate this neoplasm from other tumors with clear cell features because of their differences in treatment and cli...

Thyroid gland metastatic tumors are rare in clinical practice. Clear cell RCC is one of common metastatic tumors to thyroid. We here reported a case of incidentally found clear cell renal carcinoma metastasis to the thyroid gland 3 years after nephrectomy, in the thyroidectomy procedure performed for the patient due to the thyroid enlargement caused by multinodular goiter. A 65-year-old Iranian...

Background: Malignant pleural effusion is common in patients with advanced malignant tumor. The aim of this study is to analyze the characteristics of pleural metastasis of renal clear cell carcinoma, pleural effusion under medical thoracoscopy and the diagnostic value of interventional thoracoscopy-guided biopsy, and to improve the understanding of pleural metastasis of renal clear cell carcin...

hyalinizying clear cell carcinoma is a rare tumor which affects women more than men and is more common in minor salivary glands. the purpose of this paper was to describe a case of hyalinizing clear cell carcinoma of buccal vestibule in a 55-year-old woman. it is important to differentiate this neoplasm from other tumors with clear cell features because of their differences in treatment and cli...

One of the rare neoplasms of cervix uteri and vagina is clear cell carcinoma; mostly in patients with a positive past medical history of intrauterine diethylstilbestrol (DES) exposure which reveals the importance of other unknown risk factors of gynecologic neoplasms. 2 Asian women referred to the gynecology-oncology department. The first one came with a complaint of prolonged vaginal discharge...

metastatic   tumors in the nose and paranasal sinuses are infrequent. the origin of this metastatic tumors are often renal cell carcinoma. we present one case of metastatic renal cell carcinoma   to the nose and paranasal sinuses ,4 years after initial nephrectomy and diagnosis of stage t1n0m0 clear cell carcinoma. the patient complained of nasal obstruction and recurrent epistaxis   who was tr...