martedì 8 luglio 2008

Warthin tumor







Findings

Figure 1, Figure 2, Figure 3, and Figure 4: CT images of the bilateral parotid Warthin tumors.


Diagnosis: Warthin tumor


Warthin tumor (also referred to as papillary cystadenoma lymphomatosum) is the second most common benign tumor of the parotid gland with only pleomorphic adenoma being more common. Warthin tumor comprises 4%-10% of all parotid tumors. They are the most common bilateral salivary gland tumor with an estimated 5% to 14% of cases presenting with bilateral glandular involvement.

Warthin tumors are ovoid, encapsulated tumors that are either completely solid or solid with cystic components. The most common location of presentation is the parotid tissue adjacent to the angle of the mandible. Warthin tumors are believed to arise from the embryologic entrapment of heterotopic salivary gland ductal epithelial tissue within intraparotid or periparotid lymph nodes.

Patients typically present with painless swelling. The peak incidence is the fifth to seventh decade of life. Risk factors include cigarette smoking and radiation exposure. Malignant degeneration and facial nerve involvement are extremely rare. Treatment for Warthin tumors is surgical with superficial parotidectomy.


Imaging

Ultrasound images demonstrate a well demarcated, hypoechoic mass or a solid mass with multiple anechoic internal areas. On CT, Warthin tumors are homogeneous, enhancing soft tissue densities that contain no calcification. If calcifications are present in a benign appearing parotid mass, the diagnosis of pleomorphic adenoma should be favored. Warthin tumors are traditionally located in the posterior aspect of the tail of the parotid gland but the tumors have been known to arise from periparotid lymph nodes. Cyst formation is common and the larger the tumor the greater the chance for cystic change. On MR imaging, the tumors have low T1 and high T2 signal (similar to pleomorphic adenomas). Warthin tumors are rich in mitochondrium and therefore will accumulate Tc-99m pertechnetate on salivary scintigraphy. Unfortunately, oncocytomas and the extremely rare oncocytic carcinoma both accumulate pertechnetate as well. Imaging findings that suggest a malignant parotid mass include; irregular margins, heterogeneous density/signal intensity, regional lymphadenopathy, adjacent soft tissue or bone invasion, and facial nerve perineural spread of tumor. Often, parotid masses will go to biopsy for a definitive diagnosis.

3 commenti:

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    RispondiElimina
  2. Am very happy today to share this amazing testimony on how Dr. Imoloa the herbal doctor was able to cure me from my Herpes Virus with his herbal medicine. I have been a herpes patient for almost 8 months now and have tried different methods of treatment to ensure that I am cured of this terrible disease, but none worked for me, so I had to leave everything to God to handle as I was a Christian who had faith that one day God would intervene in my life, yet I felt so sad and desperate as I was losing almost everything due to my illness, A few months ago while I was surfing the internet I saw different recommendation about Dr Imoloa on how he have been using his herbal Medicine to treat and cure people, these people advice we contact Dr. Imoloa for any problem that would help immediately, I contacted Dr Imoloa and I told him how I got his contact and also about my disease, after some time Dr. Imoloa told me to have faith that he would prepare for me a medication of herbal herbs, he told me I would take this medicine for two weeks and also asked my home  address so as possible for him to submit the drug for me, so my good friends after all the process and everything Dr Imoloa actually sent me the medicine, I took it as I was directed by Dr. Imoloa after two weeks passed, while on Dr.Imoloa medication I began to experience changes in my body, I had to call my doctor at the hospital for some blood test after test my hospital doctor told me that I was no longer with the herpes virus and my blood is pretty good, I can not even believe this, Friends well today i am Herpes Free and i want everyone to know that there is a cure for herpes for those who will contact Dr Imoloa after reading my testimony, you can kindly contact Dr. Imoloa Via e-mail/ (drimolaherbalmademedicine@gmail.com)  or Whatssapp him on +2347081986098. website-http/www.drimolaherbalmademedicine.wordpress.comGod bless you all ...

    RispondiElimina