Intestinal Research

Colorectal neoplasia

Primary malignant melanoma without melanosis of the colon: Nam Hee Yi, Sang Heon Lee, Sang Heon Lee, Ji Hyun Kim, Sam Ryong Jee, Sang Yong Seol; Intest Res 2019;17(4):561-564. Published online August 5, 2019; DOI: https://doi.org/10.5217/ir.2019.00020

Primary malignant melanoma (PMM) of the gastrointestinal tract is rare. Reported cases of PMM of the lower gastrointestinal tract typically describe anal and rectal involvement rather than colonic lesions. This report describes a rare case of a 50-year-old woman with PMM originating in the colon. The patient presented to Inje University Busan Paik Hospital with a 3-day history of blood-tinged stools. She underwent colonoscopy for a diagnosis of hematochezia. The colonoscopic examination revealed a large-sized semi-pedunculated sigmoid colon polyp with a reddish-colored mucosal surface. Endoscopic mucosal resection was performed, and the final histopathological findings were consistent with a diagnosis of malignant melanoma. Systemic work-up was performed for assessment of metastasis and to identify the primary tumor considering the high metastatic rate of gastrointestinal malignant melanoma; however, no other malignant lesion was detected. Thus, she was diagnosed with colonic PMM. She underwent laparoscopic low anterior resection and lymph node dissection and has been recurrence-free for > 2 years.

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Primary melanoma of the gastrointestinal tract
Paola De Nardi, Stefania Guida, Giuseppe Damiano, Nathalie Rizzo, Ana Maria Samanes Gajate, Silvia Teresa Riva, Giovanni Paolino, Michele Colombo, Roberta Tummineri, Franco Rongioletti, Santo Raffaele Mercuri, Arturo Chiti, Pierpaolo Sileri, Vincenzo Russ
World Journal of Gastroenterology.2026;[Epub] CrossRef
Malignant primary melanoma of the colon: a case report
Claire K Foley, Marybeth S Hughes, Charles T Hehman
Journal of Surgical Case Reports.2023;[Epub] CrossRef

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IBD

Duodenal amyloidosis secondary to ulcerative colitis: Seung Woon Park, Sam Ryong Jee, Ji Hyun Kim, Sang Heon Lee, Jin Won Hwang, Ji Geon Jang, Dong Woo Lee, Sang Yong Seol; Intest Res 2018;16(1):151-154. Published online January 18, 2018; DOI: https://doi.org/10.5217/ir.2018.16.1.151

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Amyloidosis is defined as the extracellular deposition of non-branching fibrils composed of a variety of serum-protein precursors. Secondary amyloidosis is associated with several chronic inflammatory conditions, such as rheumatologic or intestinal diseases, familial Mediterranean fever, or chronic infectious diseases, such as tuberculosis. Although the association of amyloidosis with inflammatory bowel disease is known, amyloidosis secondary to ulcerative colitis (UC) is rare. A 36-year-old male patient with a 15-year history of UC presented with nausea, vomiting, and abdominal pain. He had been treated with infliximab for 6 years. At the time of admission, he had been undergoing treatment with mesalazine and adalimumab since the preceding 5 months. Esophagogastroduodenoscopy showed mucosal erythema, edema, and erosions with geographic ulcers at the 2nd and 3rd portions of the duodenum. Duodenal amyloidosis was diagnosed using polarized light microscopy and Congo red stain. Monoclonal gammopathy was not detected in serum and urine tests, while the serum free light chain assay result was not specific. An increase in plasma cells in the bone marrow was not found. Secondary amyloidosis due to UC was suspected. The symptoms were resolved after glucocorticoid therapy.

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Idiopathic AA amyloidosis presenting with initial abdominal pain: a case report and literature review
Pianpian Xia, Deliang Liu, Feihong Deng, Dalian Ou, Mingyang Deng
Frontiers in Medicine.2025;[Epub] CrossRef
Gastrointestinal amyloidosis in a 50‐year‐old patient with miliary tuberculosis: A case report
Sameer Abdul Rauf, Hussain Haider Shah, Rahul Khatri, Mansoor Ul Haq, Tirth Dave, Javaria Parwez Ali, Syed Khizar Ali
Clinical Case Reports.2024;[Epub] CrossRef
Therapeutic effects of biological treatments on AA amyloidosis associated with inflammatory bowel disease: a case report and literature review
Marouf Alhalabi, Kamal Alaa Eddin, Ahmad Abbas
European Journal of Gastroenterology & Hepatology.2023; 35(11): 1298. CrossRef
Rheumatoid arthritis: Extra-articular manifestations and comorbidities
Fabiana Assunta Figus, Matteo Piga, Irene Azzolin, Rebecca McConnell, Annamaria Iagnocco
Autoimmunity Reviews.2021; 20(4): 102776. CrossRef
Specific Clinical and Morphological Characteristics of Amyloidosis of the Stomach and Duodenum
Z. V. Gioeva, L. M. Mikhaleva
Journal of Anatomy and Histopathology.2019; 8(1): 39. CrossRef
Morphological and Immunohistochemical Characteristics of Experimental Mandibular Fractures Healing Process
A. A. Matchin, A. A. Stadnikov, E. V. Nosov, S. Kh. Kiriakidi
Journal of Anatomy and Histopathology.2019; 8(1): 44. CrossRef
Secondary, AA, Amyloidosis
Riccardo Papa, Helen J. Lachmann
Rheumatic Disease Clinics of North America.2018; 44(4): 585. CrossRef

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The Characteristics of Colonoscopic Findings in Differentiating Crohn's Disease from Intestinal Tuberculosis: In Soo Je, Sang Hyuk Lee, Eun Uk Jung, Myoung Joo Kang, Sang Won Park, Paul Choi, Ji Hyun Kim, Sung Jae Park, Sam Ryong Jee, Eun Taek Park, Youn Jae Lee, Sang Yong Seol; Intest Res 2007;5(2):158-164. Published online December 30, 2007

Abstract PDF: Background/Aims
The incidence of Crohn's disease (CD) is on the increase in Korea. The differentiation of Crohn's disease from intestinal tuberculosis (IT) is difficult. The aim of this study is to determine the characteristics of colonoscopic findings and factors that differentiate CD from IT. Methods: A total of 136 patients who were diagnosed with CD or IT at the Busan Paik Hospital from January 1995 to May 2005 were included in this study. We analyzed endoscopic findings, clinical characteristics and histological findings of 75 patients with CD and 61 patients with IT retrospectively. Results: For patients with IT, 18 (58.1%) of the patients had circular ulcers. For patients with CD, 27 (42.1%) of the patients had transverse ulcers, 18 (28.1%) of the patients had longitudinal ulcer, and 19 (29.6%) of the patients had both types of ulcers. The involvement of the ileocecal valve was noted in 18 (58.0%) of the patients with CD and in 37 (57.8%) of the patients with IT. The involvement of the rectum or anus was noted in 24 (51.5%) of the patients with CD and one (3.2%) patient with IT. Conclusions: According to previous studies, the presence of an ulcer was important to differentiate CD from IT. However, the presence of an ulcer was not a significant differentiating factor in our study. On colonoscopic findings, involved segments, an aphthous ulcer, cobblestone appearance, involvement of the rectum or anus and mucosal bridge should be observed carefully. (Intest Res 2007;5:158-164)

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Factors Affecting the Efficacy of Tegaserod in Patients with Chronic Constipation: Hwang Choi, Sang Heon Yoon, Won Chul Lee, Joo Sung Kim, Dong Kyung Chang, Yoon Tae Jeen, Jin Oh Kim, Dong Soo Han, Hyo Jong Kim, Sang Yong Seol, Won Ho Kim, Suk Kyun Yang, Jin Ho Kim; Intest Res 2007;5(2):170-176. Published online December 30, 2007

Abstract PDF: Background/Aims
The effect of tegaserod has been found to differ for Caucasian and black patients. The aims of this study were to demonstrate the efficacy of tegaserod on bowel habits and to investigate the factors affecting the efficacy of tegaserod in Korean patients suffering from chronic constipation (CC). Methods: This was an open-label, multi-center, observational study. Analysis of covariance with repeated measures was used to determine the overall effect of treatment and was used to determine the changes in the number of complete spontaneous bowel movements (CSBM) from baseline during the 8-week treatment period. Demographic and baseline characteristics were compared between responders (3 or more CSBM at 8-weeks) and non-responders by the use of multivariate analysis. Results: A total of 1,798 patients were included in the study. Tegaserod treatment resulted in a significant increase in the mean number of CSBM per week over weeks 2-8 from baseline levels (from 1.0 to 3.1 CSBM per week, p＜0.0001). Tegaserod treatment was more effective for female patients, younger patients (age less than 65 years), patients with a high Bristol score at baseline, and patients with a short duration of constipation symptoms. Conclusions: Treatment with tegaserod improved bowel movements and more effective in female patients, patients under the age of 65 years, patients with a high Bristol score at baseline, and patients with a short duration of constipation symptoms. (Intest Res 2007;5:170-176)

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