F-18 FDG is the most widely used tracer in molecular imaging and it is applied for many purposes mainly in malignant diseases. Incidental finding are common in FDG-PET/CT imaging and includes benign and malignant lesions. Among the rare tumors , adrenal oncocytomas are uncommon findings and incidental findings of thyroid malignancies are not rare. Oncocytoma is a rare adrenocortical tumor and m...

TABLE OF CONTENTS 1. Abstract 2. Introduction 3. Materials and Methods 3.1. Tumor samples 3.2. Immunohistochemical staining and analysis 3.3. Analysis of mtDNA 4. Results and review of the literature 4.1 Renal oncocytoma 4.2 Thyroid oncocytoma 4.3 Parathyroid oncocytoma 4.4 Nasopharyngeal oncocytoma 4.5 Salivary gland oncocytoma 4.6 Adrenal gland oncocytoma 4.7 Pituitary gland oncocytoma 4.8 E...

Oncocytoma is a neoplasm consisting of oncocytes that is found in the salivary gland, kidney, and thyroid. Adrenocortical oncocytoma is particularly uncommon, and most cases reported are benign and nonfunctioning. Here, we report a 20 cm adrenal mass associated with necrosis that was identified as an oncocytic adrenocortical tumor with uncertain malignant potential through histopathological eva...

Functioning adrenocortical oncocytoma is very rare neoplasm. It is usually nonfunctional and benign and incidentally detected. Generally, these tumors originate in the kidneys, thyroid, parathyroid, and salivary or pituitary glands; they have also been reported in other sites including choroid plexus, respiratory tract, and larynx. Histologically, they are characterized by cells with eosinophil...

In this article, we present a case of diffuse follicular variant papillary thyroid carcinoma with pituitary metastasis, which is rare cause metastasis. The an uncommon carcinoma. A 74-year-old male was presented weakness, fatigue, and decreased appetite. patient diagnosed secondary adrenal insufficiencies. Imaging revealed mass suprasellar extension, right cavernous sinus invasion, optic chiasm...

INTRODUCTION Oncocytic neoplasms as tumors arising in the adrenal glands are rare, usually considered as nonfunctional and benign. In the current literature, there are extremely limited reports of adrenal oncocytic neoplasms; as to date, only 147 cases have been described. The rarity of the event prompted this study which reviews and presents the incidence, histology, diagnosis and therapy of a...

metastasis to the oral region is very rare and accounts for less than 1% of oral malignant tumors. breast, lung, kidney, adrenal, gastro intestinal tract and prostates are most common primary tumors from which metastasis to oral region occur frequently. metastasis from thyroid gland is extremely rare to oral region. we present an unusual case of metastatic follicular carcinoma of thyroid in max...

Adrenocortical oncocytoma is found very rarely. Most such tumours are benign and nonfunctioning. We report the case of a nonfunctioning adrenocortical oncocytoma located in the right adrenal gland in a 35-year-old man. The patient was tested because of arrhythmia. An adrenal mass of 68 × 64 mm was found during ultrasonography, followed by CT examination. Physical examination indicated obesity w...

Renal carcinoma cell is responsible for 3e4% of all neoplasms and 80e85% of malignant tumors of the renal cortex. The most frequent histological subtypes are: clear cells (approximately 75%), papillaries (10%), chromophobes (5%), oncocytoma (8%), angiomyolipoma (<1%). Among the less common histological types are the medullary carcinomas (1%), collecting ducts (1%), Xp11 translocation (<1%) and ...

Medullary thyroid carcinoma can arise as a component of multiple endocrine neoplasia (MEN) syndrome which includes adrenal pheochromocytoma. Familial medullary thyroid carcinoma with no association of other components of MEN syndrome is also reported. Epinephrine and norepinephrine excreted in 24 hour urine and/or randomly voided urine were measured for screening of pheochromocytoma in patients...