I am Dr Charles Tan, General Surgeon (Endocrine Surgery) based in Mount Elizabeth Novena Hospital Singapore. I have over 21 years of clinical experience, and my subspecialty interest is in endocrine surgery and endoscopic hernia repairs. I attained my medical degree from the Faculty of Medicine at the University of Leicester in 1995. After completing my basic surgery training in Singapore at the Singapore General Hospital & National University Hospital, I attained entry into the Fellowship of Royal College of Surgeons of Edinburgh (FRCS) in 2006. I was then awarded a fellowship for further training at the Royal North Shore Hospital in Sydney, New South Wales, Australia. Prior to establishing my private practice, I was formerly Senior Consultant at the National University Hospital (NUH) of Singapore. As Head of the Endocrine Surgery Division in NUH, I started the robotic axillary thyroid surgery program. I currently have the largest experience of thyroid surgery via the axillary in Singapore. Apart from comprehensive treatment of thyroid cancers, other new procedures include minimally invasive parathyroid surgery under local anaesthesia and key-hole adrenal surgery (trans-abdominal or retroperitoneal). I am currently the president of the Singapore Hernia Society. I have performed more than 1000 cases, of which 90% of cases are performed via key-hole. I regularly conducts courses and master classes to share my expertise to fellow colleagues. I also have a strong passion to teach. I have been the best tutor in the department of surgery every year and still hold position as a visiting consultant, adjunct assistant professor in National University Hospital. To further contribute to medical education, I have written a best-seller OSCE book for students. Learn more about Mount Elizabeth Novena Hospital here: https://patients.smarterhealth.sg/hospital/mount-elizabeth-novena-hospital-singapore/ Learn more about me here: https://patients.smarterhealth.sg/specialist-doctor/charles-tan/ I am excited to be here to share/discuss endocrine health with everyone. Whether you've got questions about thyroid cancer, hernias, skin lesions, skin cysts or lipomas, ask me anything! === Want to ask a question? Submit your question at the bottom of this page. Don’t forget to include your name and email address to get notified when the doctor answers your question.
Doctor, what are the signs of a dangerous lump on the armpit? I have had a lump on my armpit for around 6 months. It is as hard as stone and dark-colored.
Doctor, I had lipoma. I read online where some articles said it is not dangerous, while some say it is dangerous. Which one is true?
I am a 33 year old female. Whenever I have my period, there is a small lump that appears on my armpit. It is not too visible though, and can be felt when I touch it. It usually itches and the skin around it peels off too. I googled and some said that a lump on the armpit can be cancerous. The lump disappears when my period cycle completes though.
Doctor, I have a lump on my neck. I thought it was a goiter, but it has been 5 months and it's still there. What is the solution, Doc?
Doctor, I had lipoma and 9 months ago I received injection treatment for it (because the size is not too big and I am scared of surgery). However, the lump is now back. Does it mean surgery is the only way to permanently remove it?
Doctor, there is a small, hard lump on the back on my neck. It has been there for 2 months. It doesn’t get bigger though. I am curious - what could it be?
Good evening, Doctor. I am 48 years old. I have had a thyroid problem for 4 months now. I used to be able to feel my heart beat in my chest, but that issue has stopped. However, sometimes I feel the same sensation in my epigastrium. Is this still related to the thyroid problem?
Dr Charles, why do I have a goiter almost every month? Does it mean something is wrong with me?
Doctor, there is a long lump from my neck to my left shoulder. It feels like meat when I touch it. It doesn’t hurt but looks weird. Is surgery the only solution or are there any other options?