Dr. Kasidin Vitoopinyoparb

Dr. Kasidin Vitoopinyoparb (Thai: กษิดิน วิทูภิญโญภาพ) is a colorectal surgeon in Bangkok, Thailand. He trained as a general surgeon (Thai Board of General Surgery) and then sub-specialised in colorectal surgery (Thai sub-board), and Kamol Cosmetic Hospital names him as the colorectal surgeon on its Gender Affirming Surgery Team. The task his profile describes is narrow and specific: working laparoscopically (keyhole surgery through small incisions with a camera), he prepares the length of colon that later lines the vagina in colon (sigmoid) vaginoplasty. Kamol calls him a specialist in minimally invasive techniques for this colon graft preparation, and says he has belonged to its gender-affirming team for more than ten years.

One point shapes everything else on this page: his specialty is colorectal surgery, not plastic surgery. In Kamol's doctors directory he appears in the group headed General Surgeons and Specialist Surgeons, not with the plastic surgeons, and a September 2026 search of the public membership list kept by Thailand's plastic and reconstructive surgery society (ThPRS) did not find his name. What his profile documents is the abdominal, bowel stage of a colon vaginoplasty. Shaping the vulva and clitoris, and deciding the overall surgical plan, rest with other members of the Kamol team; no official page we found assigns those parts to him.

Outside Kamol he works in the public sector. The joint medical school run by the Department of Medical Services and Rangsit University lists him as a full-time lecturer in the Department of Surgery at its Rajavithi Hospital clinical education centre, and his 2025 article in The Thai Journal of Surgery gives his affiliation as the Colorectal Surgery Division of Rajavithi Hospital, a government hospital in Bangkok. Kamol lists his wider interests as minimally invasive colorectal surgery, colorectal cancer and anorectal disorders, and clinical research and surgical training.

• Specialty: general surgery, with a sub-board in colorectal surgery
• City: Bangkok
• Gender-affirming role: colorectal surgeon, Gender Affirming Surgery Team, Kamol Cosmetic Hospital (Wang Thonglang district)
• Documented procedure on our site: colon (sigmoid) vaginoplasty, specifically the laparoscopic colon graft stage
• Other current post: lecturer, Department of Surgery, Rajavithi Hospital (DMS–Rangsit University joint medical school)
• How to reach him through us: request a consultation; our patient team confirms availability with Kamol

Dr. Kasidin's education is documented by three kinds of source: Kamol's profile, his instructor page at the DMS–Rangsit University joint medical school, and the Ramathibodi Department of Surgery's own list of former residents. Where these give years, we show them as published.

• Medical degree: M.D. from Mahidol University, earned at its Ramathibodi Hospital medical faculty; Kamol gives the year as 2002.
• General surgery residency: Department of Surgery, Ramathibodi Hospital. The department's alumni list places him in general-surgery class 38, dated B.E. 2548 (2005); the list leaves open whether 2548 marks the start or the end of his residency.
• Thai Board of General Surgery: listed by Kamol as 2008, with training at Ramathibodi.
• Sub-board in Colorectal Surgery: listed by Kamol as 2013, with training at Chulalongkorn University.
• Master of Science in Clinical Epidemiology: Mahidol University, listed by Kamol as 2018. No completion year is given, so 2018 may be the year the course began.
• Medical education: a study visit in medical education on 4 December 2022, listed on his DMS–Rangsit University instructor page without the name of the host institution.

The DMS–Rangsit University page independently confirms the Ramathibodi medical degree, the general surgery board and the colorectal sub-board, although it gives no years for them.

Read together, this is the training path of a colorectal surgeon, not a cosmetic surgeon. General surgery training covers operations throughout the abdomen; the colorectal sub-board adds further training in surgery of the colon, rectum and anus, which is exactly the part of the body his role in colon vaginoplasty involves. The clinical epidemiology degree is a research qualification in how clinical studies are designed and analysed, and it shows in his publications: two of his papers are systematic reviews with network meta-analysis that list Ramathibodi's clinical epidemiology and biostatistics department among his affiliations.

We found no official record of plastic surgery training or an overseas fellowship for him. For a surgeon whose documented role is the bowel stage of a team operation, that is not a gap in itself, but it is one more reason to confirm with Kamol who will carry out the genital part of your surgery.

Kamol Cosmetic Hospital, Bangkok (current). On its Gender Affirming Surgery Team, Kamol names Dr. Kasidin as a Colorectal Surgeon who prepares the colon laparoscopically for transgender patients having colon vaginoplasty. His profile states that he has been part of this team for over 10 years; the hospital gives no start date. Kamol's own service page offers colon (sigmoid) vaginoplasty by both open and laparoscopic approaches. Kamol also lists a second colorectal surgeon on its gender-affirming team, Assoc. Prof. Dr. Charnjiroj Thiptanakit, so it is reasonable to ask which colorectal surgeon would be allocated to your operation.

Rajavithi Hospital, Bangkok (current). The instructor page of the Department of Medical Services–Rangsit University joint medical school lists him as a full-time lecturer (อาจารย์ประจำ) in the Department of Surgery at the Rajavithi Hospital Clinical Medical Education Center. His 2025 journal article names the Colorectal Surgery Division, Department of Surgery, Rajavithi Hospital as his affiliation. Rajavithi is a government hospital under the Department of Medical Services. It does not have a facility profile on our site, and the gender-affirming role described on this page is documented at Kamol, not at Rajavithi.

Research. All four publications on his record carry a Rajavithi Hospital affiliation:

• a 2025 study in The Thai Journal of Surgery, with Dr. Kasidin as corresponding author, on recurrence in rectal cancer patients with clinically suspected lateral pelvic lymph node spread after chemoradiotherapy and total mesorectal excision;
• a 2022 systematic review and network meta-analysis in the International Journal of Surgery comparing botulinum toxin doses and injection sites for chronic anal fissure;
• a 2021 systematic review and network meta-analysis in Gynecologic Oncology on preventing venous thromboembolism (blood clots) in gynaecological cancer patients having major abdominopelvic surgery;
• a 2017 comparative study in the International Surgery Journal of low ligation of the inferior mesenteric artery versus selective ligation of the sigmoid arteries in surgery for sigmoid colon cancer.

Gender-affirming surgery is not the subject of any of these papers. The last two still touch on questions a colon vaginoplasty patient may want to raise: how blood clots are prevented after a long abdominal and pelvic operation, and how the blood supply of the sigmoid colon is handled. They show his research interests; they are not evidence about the results of his work at Kamol.

Memberships. The Thai Society of Colorectal Surgeons lists him on its official member list as member no. 00019. Searching his surname in the RCST member lookup, a web tool kept by the Royal College of Surgeons of Thailand, brings up a single entry, in the field of surgery, spelt there as Kasiden Vitoopinyopaab.

What we leave out. Kamol's English and Thai profiles give different totals for the number of cases he has done, so we repeat neither. If case numbers matter to you, ask Kamol how many colon graft procedures he has prepared for its team, and over what period.

Our site links Dr. Kasidin to one procedure, colon (sigmoid) vaginoplasty, because it is the only gender-affirming operation his official Kamol profile connects him with. Within it, his documented role is the laparoscopic preparation of the colon graft.

What the colon stage involves, in general. In a colon vaginoplasty, a segment of the sigmoid colon, the last part of the large bowel before the rectum, is used to line the new vaginal canal. In general, the segment is separated from the rest of the bowel while keeping its own blood supply, the two remaining ends of the bowel are joined back together, and the segment is brought down into the pelvis, where it is connected to the vulva created in the genital part of the operation. That makes it two operations in one: a bowel operation inside the abdomen and a genital operation. Dr. Kasidin's profile places him in the first of these, and Kamol describes his approach as laparoscopic, meaning the bowel work is done through small incisions with a camera rather than through one larger opening.

Why a colon technique rather than another. Our vaginoplasty guide sets out three ways of lining the canal. Penile inversion vaginoplasty is the most established. Peritoneal vaginoplasty takes tissue from the peritoneum, the membrane inside the abdominal wall, often with robotic assistance. A bowel segment is usually kept for particular circumstances, revision surgery or a shortage of skin among them. Kamol offers all three techniques, as well as vulvoplasty and revision vaginoplasty. Which one suits you is a decision for the surgical team after assessing your anatomy and goals. A consultation that includes Dr. Kasidin is most useful once a colon technique is under consideration, because the bowel stage is what he can speak to directly.

If you have had vaginoplasty before. Revision vaginoplasty is not among the procedures his official profile names. If you are considering a colon technique to rebuild a canal after earlier surgery, ask Kamol whether he would be part of your team, and send your previous operative notes when asked (see the list further down).

Recovery when the bowel is involved. Our vaginoplasty guide describes the usual pattern for vaginoplasty in general: general anaesthesia, an operation commonly lasting three to six hours, commonly five to seven nights in hospital, roughly three to four weeks spent in Thailand overall, long-term dilation to maintain depth, and often around six to eight weeks before returning to desk work. For the colon technique specifically, our procedure page gives 21–30 days in Thailand as typical. A colon technique adds an abdominal operation and a join in the bowel, so ask Kamol how your recovery would differ from that general pattern: when you start eating again, how bowel function is checked after surgery, how the abdominal wounds are cared for, and what the dilation routine is for a canal lined with bowel. Bowel tissue naturally makes mucus, so also ask what discharge to expect and how to manage it over the long term.

Risks to discuss. Our guide lists what can go wrong after vaginoplasty in general. Bleeding and infection can occur, wounds can heal slowly, and urinary problems such as spraying or narrowing are possible. Over time the canal may lose depth or tighten, sensation can change, and, rarely but seriously, an abnormal passage (a rectovaginal fistula) can form between the canal and the bowel. With a colon technique, also ask how the team watches for problems at the bowel join, and what happens if one appears after you have flown home. Ask for Kamol's own complication and revision figures for colon vaginoplasty rather than relying on general statements.

His wider colorectal practice. Kamol lists colorectal cancer, anorectal disorders and minimally invasive colorectal surgery among his interests. Those belong to his general colorectal work. ThaiCosmeticSurgery.com covers cosmetic, plastic and gender-affirming surgery, so we list him for colon vaginoplasty only.

Colon vaginoplasty at Kamol is a team operation, and Dr. Kasidin's documented role covers the bowel stage. It helps to split your list in two: questions about the abdominal, bowel part of the operation, which fall within his role, and questions about the genital stage, the overall plan and logistics, which belong to the lead surgeon or to Kamol's coordinators.

Questions for Dr. Kasidin about the bowel stage

• Will the colon stage of my operation be done laparoscopically, and what would lead to a change to open surgery during the operation?
• Where will the abdominal incisions be, and what scars should I expect?
• Is there anything in my history, such as previous abdominal surgery or a bowel condition, that makes a colon graft more difficult or less suitable for me?
• What preparation is needed before surgery: diet, bowel preparation, or changes to my medicines?
• After surgery, when can I eat and drink again, and how is the bowel join monitored while I am in hospital?
• Which measures are planned to prevent blood clots during and after the operation?
• What mucus or discharge should I expect from a colon-lined canal, and how do I care for it once I am home?

Questions for the team as a whole

• Who will lead my surgery, and who creates the vulva and clitoris?
• Why is a colon technique being recommended for me rather than penile inversion or peritoneal vaginoplasty?
• How often does this team perform colon vaginoplasty, and what are its complication and revision rates?
• What is the dilation routine in hospital and at K Garden, and how does it change once I am home?
• Which documents does Kamol need before genital surgery? As our vaginoplasty guide explains, surgeons in Thailand generally work from international guidance such as WPATH's SOC-8 (Standards of Care, eighth edition); before a genital operation, that typically calls for a written assessment by a suitably qualified health professional and, where it is clinically appropriate and wanted, a period on hormones, for which SOC-8 suggests at least six months. A number of surgeons still request two letters, so get Kamol's exact list in writing.
• Does Kamol's advice on hair removal differ for a colon technique, given that the canal is lined with bowel rather than skin?
• Will my operative notes be provided in English for my doctors at home, and whom do I contact about a bowel-related problem after I leave Thailand?

Whether a colon technique is suitable for you, and whether you are fit for a long combined abdominal and genital operation, is something only the surgical team can judge, after assessing you individually. Nothing on this page replaces that assessment.

The only facility where Dr. Kasidin's gender-affirming work is documented is Kamol Cosmetic Hospital, at No. 1223, Lat Phrao 94, on Inthraphon Road in the Wang Thonglang area of Bangkok (postcode 10310). Everything in this section comes from what Kamol publishes about the hospital as a whole. None of it is a statement about Dr. Kasidin personally.

Accreditation. Our September 2026 check of the directory kept by Joint Commission International (JCI) showed Kamol Cosmetic Hospital with the status Accredited; the directory gives no expiry date.

The parts of the building that matter for a combined operation. Kamol describes the hospital as built around complex aesthetic and gender-affirming surgery. For a procedure with both an abdominal and a genital stage, the relevant spaces are:

• the surgical floor on level 4, which houses a microsurgery theatre and an endoscopic suite (Kamol's Thai-language page on its facilities counts seven operating rooms altogether);
• a monitored recovery area of 11 beds next to those theatres;
• private inpatient rooms on levels 5 and 6, and medical residence apartments on level 7;
• a wellness and diagnostic centre on level 2 with its own laboratory, imaging by X-ray and ultrasound, heart tracings (ECG) and exercise stress testing of the heart.

Before you travel. If you cannot come to Bangkok yet, Kamol says its surgeons can hold a secure video consultation online. The hospital puts a personal representative in charge of each consultation request, offers help with hotels and airport transfers, and keeps an international telephone line for enquiries and urgent matters. Kamol's contact page names English and Thai as the team's working languages and says interpretation into other languages can be organised if you ask. No official page says which languages Dr. Kasidin speaks, so name the language you are most comfortable in when you send your request and ask whether an interpreter will join the consultation. Extension of a medical treatment visa is another service Kamol lists; check the rules for your own nationality before you book flights.

After surgery. On leaving the ward, Kamol patients move to K Garden, the hospital's own serviced apartments nearby, and dressings, stitch removal and follow-up visits with the surgeon carry on from there. For male-to-female genital operations, the hospital says specialist nurses change dressings and supervise dilation two times a day. A limousine takes patients to the airport when they leave.

How long to stay. For colon vaginoplasty, our procedure page puts the usual time in Thailand at 21–30 days. Ask Kamol whether the bowel stage changes that estimate for you, and whether a companion can stay with you at K Garden. The day you can fly is decided by your surgical team once they have checked your recovery, so a changeable return ticket is safer than a fixed one.

Paying. Kamol lists three ways to pay: cash in Thai baht or in US dollars, euros, British pounds, Australian dollars or Canadian dollars; a credit or debit card; or bank transfer. Ask for a written quote that states what is included for a colon technique, such as hospital nights, the stay at K Garden, dilators, medicines and follow-up visits.

Rajavithi Hospital. His other documented post is at Rajavithi Hospital, a government hospital under the Department of Medical Services. It has no facility profile on our site, and consultation requests about colon vaginoplasty through our patient team go to Kamol.

A colon technique brings your bowel and abdominal history into the assessment, alongside everything a vaginoplasty team normally asks about. Have the following ready, and send it when Kamol or our patient team asks for it:

• Abdominal and pelvic surgery history: any previous operations on the abdomen or pelvis, such as appendix removal, hernia repair or bowel surgery, with dates and operative notes if you have them.
• Bowel history: any diagnosed bowel condition, current bowel symptoms, and copies of any colonoscopy, scan or other bowel reports you already have. Do not arrange new tests unless the team asks for them.
• Previous gender-affirming surgery: if you have had vaginoplasty or orchiectomy before, the operative notes, the name of the hospital, and a short description of any current problem, such as a canal that has become shallower.
• Hormone therapy: the medicines you take, the doses and how long you have taken them.
• Assessment letters: any letters or assessments from your mental health or medical team; ask Kamol exactly what it requires.
• General health: any long-term illness, all medicines and supplements, naming any blood thinner, allergies, whether you smoke, your height and weight, and any past blood clot, yours or a close relative's.
• Photos: only if the team asks, and only through the secure channel it specifies. You do not need to send photos to make a first request.
• Practical details: online or in-person consultation, travel dates and how flexible they are, whether a companion is travelling with you, and any language you need interpretation in.
• Your own question list: the bowel-stage and whole-team questions from the consultation section, plus anything else you want answered.

Hold on to a copy of each document you share, and carry the original papers with you to Bangkok for the in-person consultation.