Abstract
BackgroundSchloffer tumor is a foreign body granuloma in the abdominal subcutaneous layer that develops due to a foreign body such as suture from several months to years postoperatively. Herein, we report a case of a rapidly growing Schloffer tumor with F-18 fluorodeoxyglucose (FDG) positron emission tomography (PET) positivity at the port site of laparoscopic sigmoidectomy for colon cancer.Case presentationAn 85-year-old man, who underwent laparoscopic sigmoidectomy for stage IIIa sigmoid colon cancer 10 months ago, was referred to our hospital with complaints of a growing mass in the abdominal wall. The tumor was palpable at the right-sided abdominal wall corresponding to the port site of laparoscopic sigmoidectomy. The tumor rapidly grew for 2 months. Computed tomography showed a ring-enhanced mass at the right-sided abdominal wall. PET examination revealed high accumulation of FDG in the tumor. Tumor resection was performed due to suspected port site recurrence. The pathological diagnosis was inflammatory granuloma, so-called Schloffer tumor.ConclusionIn the era of laparoscopic surgery, Schloffer tumor may be one of the differential diagnoses for rapidly growing tumor with FDG-PET positivity at the port site in postoperative patients with advanced colorectal cancer.
Highlights
Schloffer tumor is a foreign body granuloma in the abdominal subcutaneous layer that develops due to a foreign body such as suture from several months to years postoperatively
The frequency of port site recurrence is reportedly very low [2], a growing mass at the port site of laparoscopic surgery must be suspected with the recurrence of primary gastroenterological cancer
We showed a case of a rapidly growing Schloffer tumor with FDG-positron emission tomography (PET) positivity at the port site of laparoscopic sigmoidectomy for colon cancer
Summary
Schloffer tumor has been originally reported as inflammatory tumors in five cases after hernia surgery in 1909 [1] and is defined as a foreign body granuloma that usually occurs due to the stimulation of a foreign body used for surgery at the abdominal scar from several months to years after an abdominal surgery. Case presentation An 85-year-old man complained of a growing mass at the port site of laparoscopic sigmoidectomy in the abdominal subcutaneous layer from 1 month ago during his regular clinic visits. Based on the findings of clinical imaging and clinical course, port site recurrence was suspected after a laparoscopic sigmoidectomy for advanced colon cancer.
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