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GI ONCOLOGIC SURGERY

Small Bowel Cancer Surgery in Uberlândia-MG

Specialized evaluation of small bowel tumors — adenocarcinoma, neuroendocrine tumors, GIST, and lymphoma — with individualized treatment.

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Dr. Solon Gonçalves Souza Menezes, digestive system and robotic surgeon in Uberlândia, Brazil

Dr. Solon Gonçalves Souza Menezes

CRM-MG 79366 · RQE 60355 (Digestive System Surgery) · RQE 44656 (General Surgery)

Professor of Surgery — FAMED UFU · Board certification in Digestive System Surgery (CBCD/AMB) · Robotic Surgery certification (Intuitive / Albert Einstein Hospital) · Practices at UMC and Mater Dei Santa Genoveva Hospitals, Uberlândia-MG · (34) 99341-0915

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Small bowel cancer is a rare malignancy, accounting for only a small fraction of malignant tumors of the gastrointestinal tract — the colon and rectum account for the large majority of digestive tract cancers, while the small bowel represents a much smaller share despite being its longest segment. The most frequent histologic types are adenocarcinoma (more common in the duodenum), neuroendocrine or carcinoid tumors (more frequent in the ileum), gastrointestinal stromal tumor (GIST), and, less commonly, primary intestinal lymphoma. Because it is located in a deep segment that is difficult to reach with conventional tests, diagnosis is often delayed. Warning signs include recurrent abdominal pain of unclear cause, occult gastrointestinal bleeding with iron deficiency anemia, unintentional weight loss, nausea, episodes of partial or complete bowel obstruction, and, in some functioning neuroendocrine tumors, symptoms such as facial flushing and diarrhea (carcinoid syndrome).

Diagnosing small bowel cancer usually requires a staged imaging work-up, since upper endoscopy and colonoscopy do not reach most of this segment. The most commonly used tests are contrast-enhanced abdominal computed tomography (CT), CT or MRI enterography, capsule endoscopy, and double-balloon enteroscopy, which allows targeted biopsy of the lesion. Laboratory tests and specific markers, such as chromogranin A and urinary 5-hydroxyindoleacetic acid (5-HIAA), assist in the work-up of neuroendocrine tumors. Once the diagnosis is confirmed, surgery is usually the mainstay of treatment with curative intent in most cases, as it is the method capable of removing the lesion with clear margins and performing adequate lymph node staging. Surgical planning is conducted by oncologic surgeon Dr. Solon Gonçalves (CRM-MG 79366), board-certified in Oncologic Surgery of the Digestive Tract by the Brazilian College of Digestive Surgery (CBCD-AMB), taking into account the histologic type, location, and extent of the disease.

Surgical treatment of small bowel cancer consists, in most cases, of segmental resection of the affected small bowel, with adequate oncologic margins and primary end-to-end or side-to-side anastomosis to restore bowel continuity. Regional lymphadenectomy is performed according to tumor type — more extensive in adenocarcinoma, targeted to the mesentery in neuroendocrine tumors. Duodenal tumors near the papilla may require pancreaticoduodenectomy (Whipple procedure). The approach may be open (laparotomy) or laparoscopic, depending on location, size, and the surgical team's experience. In GIST, excessive manipulation of the tumor is avoided to reduce the risk of rupture, with targeted therapy using imatinib added before or after surgery depending on the risk of recurrence. Advanced adenocarcinomas may benefit from adjuvant chemotherapy, and intestinal lymphoma is managed jointly with medical oncology.

PREPARATION AND RECOVERY

What to expect before and after surgery.

Preoperative preparation

Preoperative preparation generally includes a general clinical evaluation and additional exams to confirm disease staging and the patient's health condition, which may involve blood tests, cardiac evaluation, and nutritional assessment depending on the case. Fasting before surgery is generally indicated, and it may be necessary to adjust or temporarily suspend certain medications, such as anticoagulants, always under medical guidance. Additional imaging exams and bowel preparation, when indicated, vary according to the expected extent of resection. Each step tends to be individualized after a complete evaluation of the case by the care team.

Recovery and postoperative care

Recovery typically involves a few days of hospitalization, with a gradual return to diet as bowel transit is reestablished and pain is controlled. Time off regular activities can vary considerably depending on the extent of surgery, the surgical approach used, and each patient's individual progress. Follow-up visits and exams are usually necessary to monitor healing and, when indicated, plan any additional treatment. Warning signs, such as fever, severe pain, or signs of infection, should be reported promptly to the medical team.

FREQUENTLY ASKED QUESTIONS

Common questions about this procedure.

What are the main symptoms of small bowel cancer?+

Symptoms are usually nonspecific and progressive: recurrent colicky abdominal pain, bloating, nausea, and episodes of partial bowel obstruction. Occult gastrointestinal bleeding, manifesting as iron deficiency anemia of unclear cause, is a frequent warning sign. Unintentional weight loss and a palpable abdominal mass may also occur. In functioning neuroendocrine tumors, facial flushing, diarrhea, and palpitations (carcinoid syndrome) may be present. These symptoms should prompt medical evaluation, but on their own they do not confirm a cancer diagnosis.

Which tests are used to diagnose small bowel cancer?+

Since conventional endoscopy and colonoscopy do not reach most of the small bowel, diagnosis relies on targeted tests: contrast-enhanced CT, CT or MRI enterography, capsule endoscopy, and double-balloon enteroscopy, which allows biopsy of the lesion. Markers such as chromogranin A and urinary 5-HIAA assist in the work-up of neuroendocrine tumors. Taken together, these findings guide surgical planning and disease staging.

How long does small bowel resection surgery take?+

Duration varies according to tumor location, extent of resection, and surgical approach, typically ranging from approximately two to five hours. Cases requiring pancreaticoduodenectomy or more extensive resections with expanded lymphadenectomy tend to take longer. The exact time can only be estimated after individual review of imaging tests and definition of the surgical plan.

What type of anesthesia is used for this surgery?+

Small bowel resection is performed under general anesthesia, often combined with regional anesthetic block or epidural analgesia for postoperative pain control. The anesthetic technique is defined together with the anesthesiology team, taking into account the surgical approach, the extent of surgery, and the patient's individual clinical condition.

How many days of hospitalization are needed after surgery?+

Hospital stay usually ranges from three to seven days, and may be shorter after laparoscopic surgery with a favorable recovery, or longer after extensive resections, combined procedures such as pancreaticoduodenectomy, or in the presence of complications. Discharge depends on the return of bowel function, pain control, and the absence of signs of complications, and is determined case by case by the care team.

Is there pain after surgery? How is it controlled?+

Some degree of abdominal pain is expected in the first few days, especially at the incision site. Pain is managed with multimodal analgesia — analgesics, anti-inflammatory drugs, and, when indicated, regional or epidural block — adjusted according to the patient's response. Laparoscopic techniques tend to be associated with less postoperative pain and faster recovery compared with the open approach, although individual response varies.

Is a drain or nasogastric tube needed after surgery?+

The use of an abdominal drain and nasogastric tube is decided according to the extent of resection, the location of the anastomosis, and intraoperative findings — it is not a fixed rule for every case. When used, they are usually removed within the first few days, once clinical safety criteria are met, such as reduced output and return of bowel function.

Does the surgery leave visible scars?+

Yes, all abdominal surgery leaves a scar. With the laparoscopic approach, the incisions are small and distributed at strategic points on the abdomen. With the open approach, which is necessary in some cases depending on tumor size, location, or adhesions, the incision is more extensive, usually a midline incision. The choice of approach is individualized and discussed beforehand, considering oncologic safety and the patient's characteristics.

How much time off work is usually needed?+

Time off work usually ranges from two to six weeks, depending on the surgical approach, the extent of surgery, the type of professional activity, and individual recovery progress. Jobs requiring intense physical effort usually require a longer leave than predominantly administrative activities. Return to activities is cleared gradually by the medical team.

What are the specific risks and complications of small bowel surgery?+

As with any medium- to large-sized abdominal surgery, there are general risks such as bleeding, infection, and thromboembolic events. Complications more specific to this surgery include anastomotic fistula or dehiscence, prolonged paralytic ileus, adhesions, and, in extensive small bowel resections, risk of short bowel syndrome with nutrient malabsorption. Incidence and severity vary by case and should be discussed individually.

Are there contraindications to surgery, and is chemotherapy or radiation therapy needed?+

The indication for surgery depends on disease staging and the patient's clinical condition; extensive metastatic disease or severe comorbidities may limit surgery or require a primarily medical (nonsurgical) approach. Advanced adenocarcinomas may benefit from adjuvant chemotherapy, and GIST from targeted therapy with imatinib. Follow-up usually involves a multidisciplinary team — medical oncologist, radiation oncologist, and nutritionist — depending on tumor type and disease extent.

WHERE WE OPERATE

Hospital facilities in Uberlândia, Brazil.

Hospital Mater Dei Santa Genoveva

Av. Vasconcelos Costa, 967 — Martins, Uberlândia-MG

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Hospital UMC

Rua Rafael Marino Neto, 600 — Jardim Karaíba, Uberlândia-MG

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Content reviewed by Dr. Solon Gonçalves Souza Menezes — CRM-MG 79366, RQE 60355 (GI Surgery), RQE 44656 (General Surgery). Professor of Surgery at FAMED-UFU and Supervisor of the General Surgery Medical Residency Program at HC-UFU. ORCID. Last reviewed: September/2026.

References
  1. Locher C, Batumona B, Afchain P, et al. Small bowel adenocarcinoma: French intergroup clinical practice guidelines. Dig Liver Dis. 2018;50(1):15-19. doi:10.1016/j.dld.2017.09.123
  2. Casali PG, Blay JY, Abecassis N, et al. Gastrointestinal stromal tumours: ESMO-EURACAN-GENTURIS Clinical Practice Guidelines. Ann Oncol. 2022;33(1):20-33. doi:10.1016/j.annonc.2021.09.005
  3. Zaidi MY, Lopez-Aguiar AG, Dillhoff M, et al. Prognostic Role of Lymph Node Positivity and Number of Lymph Nodes Needed for Accurately Staging Small-Bowel Neuroendocrine Tumors. JAMA Surg. 2019;154(2):134-140. doi:10.1001/jamasurg.2018.3865
  4. Yano T, Yamamoto H. Endoscopic Diagnosis of Small Bowel Tumor. Cancers (Basel). 2024;16(9):1704. doi:10.3390/cancers16091704