Lymphoma creating colojejunal fistula: report of a case and review of the literature

Jejunocolic fistula presenting as chronic diarrhoea from advanced lymphoma

Jejunocolic fistula, a late complication of intestinal lymphoma, is a rare entity with only five reported cases in the literature. We report a young male presenting with a left lateral neck mass 5 years ago which then progressed to superior vena cava syndrome. Despite receiving radiotherapy and two cycles of chemotherapy, there was still tumour progression. He presented with a 2-week history of diarrhoea, haematochezia and weight loss for which antibiotics provided no relief. Esophagogastroduodenoscopy and colonoscopy showed a jejunocolic fistula. After discussion with the multidisciplinary team, nutritional upbuilding was initiated followed by exploratory laparotomy with segmental resection and anastomosis. On histopathology, diffuse large B-cell lymphoma involving the jejunum and colon was noted. Despite receiving palliative chemotherapy, he still succumbed to disease progression. This case highlights the importance of early recognition of jejunocolic fistulas among patients with intestinal lymphomas to facilitate early multidisciplinary intervention.

An unusual presentation of non-IBD related colorectal primary extranodal diffuse large B cell lymphoma with a colo-colonic fistula

Diffuse large B cell lymphoma of the sigmoid colon and rectum is relatively uncommon and aggressive. Due to its nonspecific symptomatology, patients are often diagnosed late into the disease and present with life-threatening complications, such as hemorrhage, obstruction, or perforation, requiring emergent surgical intervention. Patients with colorectal lymphoma typically have inflammatory bowel disease or immunosuppression. We present a case of a 79-year-old male with no known inflammatory bowel disease or immunosuppression, who had significant weight loss, diarrhea, and abdominal fullness, found by CT to have irregular wall thickening of the recto-sigmoid colon along with a colo-colonic fistula, concerning for bowel perforation. Endoscopic evaluation and biopsy confirmed the diagnosis of recto-sigmoid Diffuse large B cell lymphoma, with a PET/CT scan revealing stage IV disease. He had a partial response to six cycles of palliative reduced dose R-CHOP and is currently receiving palliative radiation to the sigmoid colon and rectum. Surgery and/or chemoradiation remain the mainstay therapy for this condition. Clinicians, however, must consider patient’s functional, nutritional, and clinical status prior to choosing an optimal therapeutic regimen. This case illustrates a unique clinical presentation of this condition and the associated diagnostic and therapeutic challenges that arise in order to prevent life-threatening complications.

Endoscopic management of duodeno-ileal fistula secondary to diffuse B-cell lymphoma

Lymphoma arising in the gastrointestinal tract is relatively common and can affect multiple sites. The development of a gastrointestinal fistula secondary to lymphoma is very rare and has not previously been reported between the duodenum and ileum. This is the first reported care where a fistula secondary to lymphoma has been treated by an endoscopic covered duodenal stent occluding the defect rather than surgical intervention. This strategy permitted early commencement of curative intent chemotherapy which led to tumour shrinkage and fistula closure.

Colonic lymphoma presenting acutely with perforated colo-splenic fistula

INTRODUCTION

Primary colonic lymphoma is rare. It comprises less than 1% of large bowel malignancies. Affected patients often present with non-specific vague symptoms with subsequent delays in diagnosis and management.

PRESENTATION OF CASE

An immuno-competent 35-year-old male presented with left iliac fossa pain, fever and constipation. Clinical examination revealed left-sided abdominal peritonism. After the initial radiological and endoscopic investigations, a provisional diagnosis of a localized perforation of a splenic flexure diverticulum was made and ultrasound-guided percutaneous drainage of the abscess was performed. The patient failed to settle on conservative treatment and therefore exploratory laparotomy was carried out. An inflammatory phlegmon consisting of a left paracolic gutter abscess, the spleen and the splenic flexure of the colon was resected en-bloc and a primary colo-colic anastomosis was performed. His operative recovery was complicated by wound infection which was treated conservatively. The histopathology revealed colo-splenic fistula secondary to a perforated colonic non-Hodgkin's lymphoma. The spleen contained multiple metastatic lymphomatous deposits. He was started on chemotherapy and remained well at 5-year follow up.

DISCUSSION

Colon non-Hodgkin's lymphoma may present initially with an acute abdomen due to perforation. It mimics any acute surgical condition. Perforation and fistulaization into the spleen is very rare.

CONCLUSION

This case highlights the delay and difficulty in diagnosing primary colonic lymphoma without resorting to surgical resection.