A Case of Transsacrally Excised Teratoma Originating in the Rectum

Hasebe, Yukitake; Honda, Ryoichi; Washizawa, Naohiro; Eishin, Boku; K, Funabashi; Shikano, Sumio; Sadamoto, Shuichi; Kobayashi, Kazuo; Yanagida, K.; Terada, Yoshio; Kawashima, Noboru

doi:10.3919/ringe1963.49.2371

Cited by 2 publications

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“…Sixty-four were diagnosed in women [ 13 ], which is not surprising because germ cells from the ovaries can migrate to the rectum [ 14 ]. The age range of patients with primary rectal tumors was 2 to 83 years, with most cases in individuals in their 20s to 40s [ 2 , 3 , 11 ]. In contrast, teratomas of the gastric and sacrococcygeal regions are mainly diagnosed in neonates and infants [ 1 ].…”

Section: Discussionmentioning

confidence: 99%

“…However, lower abdominal pain, abdominal mass, and low back pain occasionally has been reported. Among the 9 additional cases we found, there was a single patient with prolapse of a mass [ 12 ], 2 patients had hematochezia with pain [ 8 , 9 ], and 3 had constipation [ 3 , 6 , 11 ]. The patient in the present case presented with painless hematochezia.…”

Section: Discussionmentioning

confidence: 99%

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Primary Mature Teratoma of the Rectum: A Case Report

Nam

Kim

2021

Am J Case Rep

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Patient: Female, 68-year-old Final Diagnosis: Primary mature teratoma of the rectum Symptoms: Hematochezia Medication:— Clinical Procedure: Colonoscopy with polypectomy Specialty: Gastroenterology and Hepatology Objective: Rare disease Background: Teratomas are embryonal neoplasms that contain tissues derived from 1 or more of the 3 germ layers. They commonly are found in the sacrococcygeal-gonadal location, sometimes in midline locations such as the mediastinum, retroperitoneum, and head and neck region. Primary rectal teratomas are extremely rare. Extragonadal teratomas can originate from pluripotent germ cells present in abnormal embryonic rests. Case Report: Here, we report a rare case of a primary mature, solid teratoma of the rectum. A 68-year-old woman presented with hematochezia and denied any history of abdominal pain or a change in bowel habits. Colonoscopy revealed a 4-cm pedunculated polyp in the rectum. No hair was present on its surface. The polyp was completely removed by polypectomy. Histologically, the tumor consisted of mature components from all 3 germ layers. Its surface was covered by squamous epithelium with hair follicles and sweat glands. Adipose tissue, blood vessels, bone, and glandular epithelium were present inside the mass. No evidence was found of immature elements or malignant features. Conclusions: When polypoid lesions are found in the rectum, teratoma should be considered in the differential diagnosis. Histopathological confirmation is necessary to diagnose teratoma. Primary rectal teratomas should be distinguished from other neoplastic polyps as well as from local spread of teratomas arising in adjacent organs. These neoplasms are usually mature (benign) but may undergo malignant transformation. Therefore, complete resection is recommended to alleviate symptoms and avoid the risk of malignancy.

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Section: Discussionmentioning

confidence: 99%