+55 17 99728-1427 CRM 89.564 · RQE 52108 / 52109
Dr. Kaiser Jr. performing endoscopic surgery
Specialist in One Day Surgery
One Day Surgery

One Day Surgery: surgery has evolved. So has recovery time.

Advanced procedures using minimally invasive techniques, performed at top-tier hospitals, with discharge within 24 hours. Dr. Kaiser Jr. is a pioneer of this concept in Brazil — combining surgical precision, cutting-edge technology, and accelerated recovery.

Specialist in One Day Surgery
01
Main Specialty · Pioneer in Brazil

EPSIT

Endoscopic Pilonidal Sinus Treatment

The definitive treatment for pilonidal cyst. No cuts. No dressings. No weeks of bed rest.

Find out if EPSIT is right for you →
02
One Day Surgery

Bariatric Surgery with discharge in 24 to 48 hours.

Obesity has a definitive treatment.

Morbid obesity (BMI ≥ 40) or obesity with comorbidities (BMI ≥ 35 with type 2 diabetes, hypertension, sleep apnea) compromises health, mobility, and life expectancy. Diet and exercise alone have a success rate below 5% in severe cases. Bariatric surgery is the treatment with the best long-term results documented by science — it reduces overall mortality by 29% and achieves type 2 diabetes remission in up to 80% of cases.

Most performed
Sleeve Gastrectomy
Vertical Gastrectomy
Removal of approximately 80% of the stomach via laparoscopy. Reduces gastric capacity and hunger hormones (ghrelin). A technically simpler procedure with excellent results.
45–60'
Duration
60–70%
Excess weight loss
Gold standard
Gastric Bypass
Roux-en-Y (RYGB)
Considered the worldwide gold standard. Creates a small gastric pouch and reroutes the intestine. Superior long-term results, especially for type 2 diabetes remission.
60–90'
Duration
70–80%
Excess weight loss
On the rise
Mini Bypass
OAGB — One Anastomosis
A simplified version of the classic bypass with a single anastomosis. An excellent option as revisional surgery after sleeve with insufficient results. Metabolic outcomes comparable to RYGB.
45–60'
Duration
65–75%
Excess weight loss
Sleeve Gastrectomy
Gastric Bypass (RYGB)
Duration: 45–60 min
Duration: 60–90 min
ERAS stay: 1 day
ERAS stay: 1–2 days
No intestinal rearrangement
Intestinal rearrangement (two anastomoses)
May worsen reflux (GERD)
Improves gastroesophageal reflux
Greater long-term weight regain
More stable weight loss (15–20 years)
Moderate supplementation
Lifelong intensive supplementation
BMI ≥ 40 (surgery recommended regardless of comorbidities) · BMI ≥ 35 with or without comorbidities (ASMBS/IFSO 2022 update) · BMI 30–34.9 with metabolic diseases (type 2 diabetes, hypertension, sleep apnea, dyslipidemia). Mandatory multidisciplinary evaluation before any procedure.
24–48h
Hospital discharge (ERAS)
2–4 wks
Return to activities
Laparoscopic
Surgical approach
ERAS Protocol
Before surgery
Patient education, carbohydrate loading the day before, reduced fasting (2h liquids, 6h solids).
During surgery
Total intravenous anesthesia (TIVA), multimodal analgesia with opioid minimization, no nasogastric tube, no routine drains.
After surgery
Early ambulation on the same day, oral liquids initiated within 2–4 hours, pain control with oral medications, discharge in 24–48h.
Differentials
Laparoscopic approach (minimally invasive)
Hospital stay of 1 to 2 days
Return to activities in 2 to 4 weeks
Complete multidisciplinary follow-up
Find out if bariatric surgery is right for you →
03
Advanced Coloproctology

Anal fistula treated with sphincter-preserving technology that eliminates the risk of incontinence.

Definitive treatment with sphincter preservation

An anal fistula is an abnormal channel between the inside of the anus and the surrounding skin. It causes pain, discharge, recurring infections, and severe impact on quality of life. Conventional surgery carries a significant risk of sphincter injury. Dr. Kaiser Jr. masters all available techniques and selects the most appropriate one for each case — always aiming for maximum success and zero risk of incontinence.

Simple
Fistulotomy
Gold standard for simple fistulas
Surgical opening of the fistula tract for healing by secondary intention. A classic technique with the highest success rate — indicated for simple and superficial fistulas.
>90%
Success rate
4–8 wks
Healing
Recommended
VAAFT
Video-Assisted Anal Fistula Treatment
A video-endoscopic technique with fistuloscope that maps the tract under direct vision. Identifies hidden tracts that other methods cannot detect. Total preservation of sphincter function — zero risk of incontinence in the entire literature.
0
Success rate
Zero
Incontinence risk
~30'
Duration
LIFT
Ligation of Intersphincteric Fistula Tract
Accesses the intersphincteric space to ligate and divide the fistula tract without externally cutting the muscle. Excellent sphincter preservation.
~76%
Success rate
Preservation
Sphincter
FiLaC
Fistula Laser Closure
A diode laser (1470nm) with radial emission fiber causes coagulation and fibrosis of the tract. Zero continence deterioration. Can be repeated if needed.
44–89%
Success rate
Fibrin Glue
Biological adhesive
Injection of biological adhesive into the tract for occlusion. No risk of incontinence. Current role: adjuvant alongside VAAFT or LIFT.
No cutting
Sphincter intact
Advancement Flap
Mucosal flap
A rectal mucosal flap mobilized to cover the internal opening after tract curettage. Sphincter preservation. Can be combined with other techniques.
55–75%
Success rate
Technique
Incontinence Risk
Fistulotomy (simple)
Low (simple fistulas only)
VAAFT (complex and recurrent)
Zero — no cases in the literature
LIFT (transsphincteric)
Very low
FiLaC / Glue / Flap
Zero to low
Patients with simple or complex anal fistula — including cases with previous surgeries without resolution. For complex and recurrent fistulas, the primary recommendation is VAAFT — due to its superiority in identifying hidden tracts and total sphincter preservation. The technique is individually chosen according to the Parks classification, complexity, and surgical history.
Discuss the best treatment for fistula →
04
One Day Surgery

Hernias

Robotic and laparoscopic surgery with discharge in 24 hours

Inguinal Hernia

Resolution with robotic precision and discharge in 24 hours.

Inguinal hernia is the most common surgical condition worldwide — it accounts for 75% of all abdominal hernias and predominantly affects men. When left untreated, it can progress to incarceration — a medical emergency. Dr. Kaiser Jr. performs inguinal hernia repair with robotic and laparoscopic techniques, ensuring millimetric precision in mesh placement, less postoperative pain, and significantly faster recovery.

Same day
Discharge (97.7% robotic)
1 wk
Sedentary work
2–3 wks
Physical work
Lichtenstein
Open mesh repair
Classic technique with tension-free mesh placement over the defect. Can be performed under local anesthesia. Recurrence rate ~1%. Recovery: 4–6 weeks for heavy activities.
TAPP / TEP
Laparoscopic repair
Mesh placed in the pre-peritoneal space via laparoscopy, covering all weak points. Ideal for bilateral and recurrent hernias. Surgical time: ~40 min.
Recommended
Robotic
Da Vinci System — Dr. Kaiser's Recommendation
Magnified 3D vision, instruments with 7 degrees of freedom, tremor filter. Less opioid use, fewer infections, and lower recurrence rate (~1.5% vs ~2.7% laparoscopy).
0
Same-day discharge
~1.5%
Recurrence rate

Umbilical Hernia

Precise surgery, fast recovery, definitive results.

Umbilical hernia occurs when part of the intestine or fatty tissue protrudes through a weak point in the abdominal wall near the navel. It is the second most common type of abdominal hernia. Unlike hernias in babies, in adults the hernia does not resolve on its own and tends to progressively enlarge.

Same day
Discharge (non-emergency)
1–2 wks
Sedentary work
4–6 wks
Physical work
Dr. Kaiser's Approach
Robotic or laparoscopic technique
Lightweight mesh in sublay (pre-peritoneal) position — the position with the lowest recurrence and complication rates.
Aesthetic preservation
Preserving the aesthetics of the umbilical area is always a priority. Minimal scarring.
Low recurrence rate
Without mesh: 10–14% recurrence. With mesh (defects ≥ 2 cm): 0–3%. Dr. Kaiser selects the ideal technique for each case.
Advantages of robotic surgery for hernias
Magnified 3D high-definition vision
Instruments with 7 degrees of freedom
Tremor filter — superior precision
Less opioid use postoperatively
Fewer surgical site infections
Less tissue trauma and superior aesthetic results
Schedule your evaluation →
05
Specialty

Hidradenitis suppurativa: the diagnosis few make and the treatment that changes everything.

Specialized diagnosis and individualized surgical treatment

Hidradenitis suppurativa (HS) is a chronic inflammatory disease that causes painful nodules, abscesses, and fistulas in skin fold areas — armpits, groin, perianal region, and under the breasts. Despite the name suggesting a sweat gland problem, the disease begins in the hair follicles. Follicle obstruction leads to its rupture, triggering a chronic inflammatory cascade.

7 to 10 years of diagnostic delay
Hidradenitis suppurativa is one of the most underdiagnosed dermatological diseases in the world. Patients see an average of 3 or more doctors and receive 3 or more wrong diagnoses before HS is correctly identified. Common misdiagnoses: recurrent boils, folliculitis, ingrown hairs, sebaceous cysts, perianal abscess.
Stage I (Mild) — ~68% of patients
Isolated abscesses, no fistula tracts, no scarring. Treatment: clinical + localized deroofing.
Stage II (Moderate) — ~28% of patients
Recurrent abscesses with fistula formation, separated by normal skin. Treatment: clinical + localized surgery.
Stage III (Severe) — ~4% of patients
Diffuse involvement, multiple interconnected fistulas, extensive scarring. Treatment: wide excision + reconstruction.
Patients with hidradenitis suppurativa with persistent lesions that have not responded to clinical treatment (antibiotics, retinoids, biologics). Surgery is indicated in Hurley stages II and III — when established fistulas or extensive involvement of the affected area are present.
Variable
Recovery
Multidisciplinary
Approach
24h
Discharge (eligible cases)
Treatment by stage
Hurley I — Deroofing
Removal of the "roof" of individual abscesses and fistulas, with curettage of the base. Healing in ~14 days. Can be performed in-office under local anesthesia.
Hurley II — Localized Excision + Deroofing
Combination of surgical removal of confluent areas with deroofing of isolated tracts. Nd:YAG laser can reduce disease activity by 72%.
Hurley III — Wide Excision
Removal of all diseased tissue with 1–2 cm margins down to the deep fascia. Lowest recurrence rate (6–16%). Closure with open healing, graft, or flap.
Dr. Kaiser Jr.'s Approach
Specialized diagnosis (cases without correct diagnosis)
Individualized surgical planning
Excision with functional preservation (sphincter and vaginal wall)
Multidisciplinary approach (dermatology, psychology, nutrition)
Discharge within 24 hours for eligible cases (One Day Surgery)
Specialist in perianal and gluteal HS
Schedule a specialized evaluation →
Individualized evaluation

Not sure which procedure
is right for your case?

The first step is always an individualized medical evaluation. Talk to Dr. Kaiser's team and discover the best approach for your case.