Annals of Coloproctology

Anorectal benign disease

Chronic fistula in ano associated with adenocarcinoma: a case report with a review of the literature: Nalini Kanta Ghosh, Ashok Kumar; Ann Coloproctol. 2024;40(Suppl 1):S1-S5. Published online May 16, 2024; DOI: https://doi.org/10.3393/ac.2022.00752.0107

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Abstract PDF: The malignant transformation of chronic fistula in ano is rare, accounting for 3% to 11% of all anal canal malignancies. It results from long-standing inflammation and chronic irritation. No guidelines are available for the management of these cases. We herein present a case report of a 55-year-old man who presented with a history of constipation, perianal pain, and discharging fistula in ano of 4-year duration and underwent fistula surgery with recurrence. Biopsy of the fistulous tract revealed adenocarcinoma. He received neoadjuvant chemoradiotherapy, followed by abdominoperineal excision including excision of the fistulous tract. After 18 months of follow-up, he is free of recurrence. We present this case with a review of the literature, highlighting the management strategies.

Benign bowel disease

Colonic duplication in an adult with chronic constipation: a case report and review of its surgical management: Muhammad Ash-Shafhawi Adznan, Hizami Amin Tai, Aras Emre Canda, Nevra Elmas, Mustafa Cem Terzi; Ann Coloproctol. 2024;40(Suppl 1):S6-S10. Published online May 16, 2024; DOI: https://doi.org/10.3393/ac.2022.01081.0154

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Abstract PDF: One of the possible causes of chronic constipation is colonic duplication. Although seldom asymptomatic, its diagnosis is important due to the risk of malignancy that it carries. We present a case of a young female patient with long-standing constipation who was referred to Kolorektal Cerrahi Clinic (Izmir, Turkey) after scans revealed tubular type of colonic duplication. We successfully performed a laparoscopic total colectomy, and she recovered well. Identifying the type of duplication is important to ensure adequate resection and treatment. A proper workup, including carcinoembryonic antigen levels, must be done as well. Multiple surgical techniques and procedures have been introduced for this condition, but resection of the duplicated colon with its native lumen should be the management of choice, especially in tubular type of duplications such as in our case. In centers where laparoscopic services are available, laparoscopy could be a better option, as it provides multiple benefits of minimally invasive surgery. Attention should also be paid to anatomical details during surgery to ensure better results and outcomes.

Benign bowel disease

Recurrent perianal abscess in a patient with Hermansky-Pudlak syndrome–associated granulomatous colitis: a case report: Ahmet Omak, Tevfik Kıvılcım Uprak, Wafi Attaallah; Ann Coloproctol. 2024;40(Suppl 1):S11-S14. Published online November 19, 2021; DOI: https://doi.org/10.3393/ac.2021.00437.0062

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Abstract PDF: Hermansky-Pudlak syndrome (HPS) is a rare genetic disease consisting of the triad of oculocutaneous albinism, bleeding diathesis, and pigmented reticuloendothelial cells. In HPS patients’ granulomatous colitis could be an additional feature and perianal abscess could be seen in such patients. We report a patient with HPS-associated granulomatous colitis, refractory to medical treatment, and perianal involvement. Patients with HPS-associated granulomatous colitis and perianal involvement may require multiple surgical interventions and there is no consensus yet for treatment in such patients.

Benign bowel disease

A case report of impacted fecalith within mucosal pouch: an unusual cause of colocolic intussusception: Douglas Greer, Adrian Fernandez; Ann Coloproctol. 2024;40(Suppl 1):S15-S17. Published online November 18, 2021; DOI: https://doi.org/10.3393/ac.2021.00724.0103

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Abstract PDF: Intussusception involving the colon is unusual in adults and when present is managed with resection due to the risk of malignancy. We present an unusual case where the intussusceptum was impacted stool in a mucosal pouch in the transverse colon. The patient presented with bleeding per rectum and abdominal pain and was found to have a colocolic intussusception on computed tomography. Colonoscopy showed an ulcerated mass in the transverse colon. A laparoscopic right hemicolectomy was performed. Histopathology demonstrated known chronic lymphocytic leukemia, but not solid malignancy. A large fecalith impacted within a mucosal pouch had acted as the lead point. This represents a highly unusual but benign cause of intussusception.

Metastasis

Peritoneal metastatic mixed adenoneuroendocrine carcinoma treated with cytoreductive surgery and hyperthermic intraperitoneal chemotherapy: a case report: Sungchul Lee, Euitae Kim, Dong-Guk Park; Ann Coloproctol. 2024;40(Suppl 1):S18-S22. Published online November 21, 2022; DOI: https://doi.org/10.3393/ac.2022.00339.0048

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A 61-year-old man presented with abdominal distension without any symptoms. On colonoscopy and computed tomography findings, it was clinically diagnosed as peritoneal metastasis of sigmoid colon cancer, and diagnostic laparoscopy was performed. Only the peritoneum was partially resected, and the pathology was signet ring cell carcinoma with predominantly local mucinous carcinoma component. However, the patient complained of persistent symptoms and, despite the progress of chemotherapy, the peritoneal dissemination worsened, and additional cytoreductive surgery with hyperthermic intraperitoneal chemotherapy (HIPEC) was performed. Mixed adenoneuroendocrine carcinomas (MANECs) were reported in the appendix with perforated visceral peritoneum. After additional chemotherapy, the patient was discharged. Patients with advanced MANEC with peritoneal spreading may benefit from aggressive treatment by cytoreduction surgery with HIPEC, followed by intravenous chemotherapy.

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Mixed neuroendocrine non-neuroendocrine neoplasms in gastroenteropancreatic tract
Sebastián Díaz-López, Jerónimo Jiménez-Castro, Carlos Enrique Robles-Barraza, Carlos Ayala-de Miguel, Manuel Chaves-Conde
World Journal of Gastrointestinal Oncology.2024; 16(4): 1166. CrossRef

Colorectal cancer

Melanocytic nevus of the anal canal and granular cell tumor of the cecum: a case report and literature review of 2 coincidentally co-occurring neurocristopathies: Victoria Sandoval, Jorge Lara-Endara, Javier Rodríguez-Suárez, Williams Arias Garzón, Ligia Redrobán, Nelson Montalvo; Ann Coloproctol. 2024;40(Suppl 1):S23-S26. Published online January 12, 2023; DOI: https://doi.org/10.3393/ac.2022.00444.0063

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Abstract PDF: Granular cell tumors are predominantly benign soft tissue tumors originating from Schwann cells, whereas melanocytic nevi are benign proliferations of melanocytes. We present the case of a patient with the presence of both entities located in the cecum and anal canal, respectively, constituting an extremely rare coincidental finding. A 43-year-old woman was evaluated by colonoscopy for iron-deficiency microcytic anemia that had lasted for 1 year. Colonoscopy demonstrated a macular lesion of 0.3 cm with a melanocytic appearance in the anal canal; at the cecum level, a subepithelial, yellowish, and partially mobile firm nodular lesion measuring 1.3 cm was observed. A histopathological study showed a melanocytic nevus in the anal canal and a granular cell tumor in the cecum. This is the first reported case of a patient with the extremely rare coincidental-incidental finding of these 2 entities at the same time.

Benign bowel disease

A case report of a giant solitary juvenile polyp: from obstructed defecation syndrome to incontinence: Zhan Huai Teoh, Jien Yen Soh, Nasibah Mohamad, Norzaliana Zawawi, Andee Dzulkarnaen Zakaria, Zaidi Zakaria, Michael Pak-Kai Wong; Ann Coloproctol. 2024;40(Suppl 1):S27-S31. Published online November 25, 2022; DOI: https://doi.org/10.3393/ac.2022.00549.0078

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Abstract PDF: Juvenile polyps (JPs) are the most common polyps in pediatric patients. We present the case of an 18-year-old male patient with a giant solitary JP resembling solitary rectal ulcer syndrome (SRUS). The presenting history was rectal bleeding and symptoms of obstructed defecation syndrome. Colonoscopy revealed a polypoidal mass at the anorectal junction, with biopsy-confirmed SRUS. The symptoms worsened, and a protruding mass from the anus caused fecal incontinence. Pelvic magnetic resonance imaging showed a huge pedunculated mass occupying the low rectum with local compression of the urinary bladder. Transanal excision of the anal tumor was performed due to bleeding. A histopathological examination showed a JP with high-grade dysplasia. A histological examination to differentiate JPs and SRUS could be challenging based on a superficial forceps biopsy. Therefore, an excision biopsy is usually warranted with the understanding that adenomatous or malignant transformation is found in 5.6% to 12% of all JPs.

Colorectal cancer

Neuroendocrine carcinoma associated with chronic ulcerative colitis: a case report and review of the literature: Yumi Yokota, Hiroyuki Anzai, Yuzo Nagai, Hirofumi Sonoda, Takahide Shinagawa, Yuichiro Yoshioka, Shinya Abe, Yuichiro Yokoyama, Hiroyuki Matsuzaki, Shigenobu Emoto, Koji Murono, Kazuhito Sasaki, Hiroaki Nozawa, Tetsuo Ushiku, Soichiro Ishihara; Ann Coloproctol. 2024;40(Suppl 1):S32-S37. Published online April 19, 2023; DOI: https://doi.org/10.3393/ac.2022.00801.0114

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Abstract PDF: Adenocarcinoma is a common histological type of ulcerative colitis-associated cancer (UCAC), whereas neuroendocrine carcinoma (NEC) is extremely rare. UCAC is generally diagnosed at an advanced stage, even with regular surveillance colonoscopy. A 41-year-old man with a 17-year history of UC began receiving surveillance colonoscopy at the age of 37 years; 2 years later, dysplasia was detected in the sigmoid colon, and he underwent colonoscopy every 3 to 6 months. Approximately 1.5 years thereafter, a flat adenocarcinoma lesion occurred in the rectum. Flat lesions with high-grade dysplasia were found in the sigmoid colon and surrounding area. The patient underwent laparoscopic total proctocolectomy and ileal pouch-anal anastomosis with ileostomy. Adenocarcinoma was diagnosed in the sigmoid colon and NEC in the rectum. One year postoperation, recurrence or metastasis was not evident. Regular surveillance colonoscopy is important in patients with long-term UC. A histological examination of UCAC might demonstrate NEC.

Colorectal cancer

Treatment of side limb full-thickness prolapse of the side-to-end coloanal anastomosis following intersphincteric resection: a case report and review of literature: Guglielmo Niccolò Piozzi, Krunal Khobragade, Seon Hui Shin, Jeong Min Choo, Seon Hahn Kim; Ann Coloproctol. 2024;40(Suppl 1):S38-S43. Published online February 8, 2023; DOI: https://doi.org/10.3393/ac.2022.00829.0118

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Intersphincteric resection (ISR) with coloanal anastomosis is an oncologically safe anus-preserving technique for very low-lying rectal cancers. Most studies focused on oncological and functional outcomes of ISR with very few evaluating long-term postoperative anorectal complications. Full-thickness prolapse of the neorectum is a relatively rare complication. This report presents the case of a 70-year-old woman presenting with full-thickness prolapse of the side limb of the side-to-end coloanal anastomosis occurring 2 weeks after the stoma closure and 2 months after a robotic partial ISR performed with the Da Vinci single-port platform. The anastomosis was revised through resection of the side limb and conversion of the side-to-end anastomosis into an end-to-end handsewn anastomosis with interrupted stitches. This study describes the first case of full-thickness prolapse of the side limb of the side-to-end handsewn coloanal anastomosis following ISR. Moreover, a revision of all reported cases of post-ISR full-thickness and mucosal prolapse was performed.

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International standardization and optimization group for intersphincteric resection (ISOG‐ISR): modified Delphi consensus on anatomy, definition, indication, surgical technique, specimen description and functional outcome
Guglielmo Niccolò Piozzi, Krunal Khobragade, Vusal Aliyev, Oktar Asoglu, Paolo Pietro Bianchi, Vlad‐Olimpiu Butiurca, William Tzu‐Liang Chen, Ju Yong Cheong, Gyu‐Seog Choi, Andrea Coratti, Quentin Denost, Yosuke Fukunaga, Emre Gorgun, Francesco Guerra, Ma
Colorectal Disease.2023; 25(9): 1896. CrossRef

Benign bowel disease

Strangulated internal hernia through a defect of the broad ligament: a case report of laparoscopic surgery: Ji Hyeong Song, Jin Soo Kim; Ann Coloproctol. 2024;40(Suppl 1):S44-S47. Published online April 27, 2023; DOI: https://doi.org/10.3393/ac.2022.00906.0129

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An internal hernia is defined as the protrusion of an internal organ through a defect in the abdominal cavity. Broad ligament hernia (BLH) is an extremely rare type of internal hernia that is difficult to diagnose preoperatively because the symptoms are nonspecific. However, early diagnosis is crucial, and early surgery is required to reduce complications such as strangulation. Laparoscopy has the advantage of enabling simultaneous diagnosis and treatment of BLH. With the advancement of the laparoscopic techniques, several cases of laparoscopic treatment of BLH have been reported. Nevertheless, open surgery is primarily performed in patients requiring bowel resection. We present a case of laparoscopic surgery for a strangulated internal hernia through a broad ligament defect. We successfully resected the strangulated small intestine and closed the defect of the broad ligament laparoscopically with a minor incision.

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Inflamed Appendix Protruding Through a Right Broad Ligament Defect: A Case Report
Elissavet Symeonidou, Ioannis Gkoutziotis, Maria S SidiropouIou, Chrysoula Gouta , Kalliopi Gianna , Konstantinos Mpallas
Cureus.2024;[Epub] CrossRef

Healthcare reform: let science, not politics, lead the way: Nayoung Kim, Ji Eun Park, Hyun Jung Koo, Sarah Chay, Soo-Youn Ham, So Yeon Kim, Ji-Young Sul, Soon Won Hong, Hyun Wook Baik; Ann Coloproctol. 2024;40(Suppl 1):S48-S49. Published online May 8, 2024; DOI: https://doi.org/10.3393/ac.2024.00283.0040

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