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Query: UMLS:C0699790 (colon cancer)
 28,837 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Pelvic schwannomas are rare; it is even more rare for a pelvic schwannoma to occur concurrently with a colon cancer. The authors report the case of a 62-year-old woman with a cecal mass that was surgically removed and the histopathologic diagnosis was adenocarcinoma of the colon. Meanwhile, aretroperitonealpelvic nodalmasswas detected as questionable metastasis of the primary tumor. A subsequent computed tomography-guided fine-needle biopsy was carried out to establish the tumor stage. Surprisingly, the fine-needle biopsy revealed a benign schwannoma. This unusual case posed a dilemma in postoperative staging of the colon cancer.
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PMID:Synchronous colonic adenocarcinoma and pelvic schwannoma. 2147 79

We experienced a case of vestibular schwannoma and metachronous schwannoma in the colon. A 59-year-old female presented with a 1-month history of hematochezia. She had undergone suboccipital craniectomy resulting in radical subtotal resection, followed by gamma knife radiosurgery for a large left vestibular schwannoma 4 years prior to admission. On preoperative colonoscopy, a huge mass through which the colonoscope could not be passed was detected. CT scans showed colo-colonic intussusception with a 4.8-cm-sized mass in the descending colon. PET/CT revealed hypermetabolism of the descending colon tumor and pericolic lymph nodes. We performed left hemicolectomy under the preoperative impression of colon cancer with intussusception. A pathological diagnosis of benign schwannoma of the colon was made in this patient.
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PMID:Metachronous schwannoma in the colon with vestibular schwannoma. 2524 71

Colonic schwannomas are rare gastrointestinal mesenchymal tumors, and only a limited number of cases has been reported. The occurrence of these tumors is less common in the large intestine than in the stomach. The present study reports a case of colonic schwannoma in a 62-year-old female patient with no specific symptoms. The patient was diagnosed with a mass in the ascending colon by colonoscopy and abdominal computed tomography scanning. A right hemicolectomy was performed. The postoperative pathological diagnosis was ascending schwannoma. This case is noteworthy as colonic schwannomas are rare and are typically treated as colon cancer. No recurrence of the lesion was observed after 24 months of follow-up.
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PMID:Schwannoma of the colon: A case report and review of the literature. 2707 20

Here, we report the case of a 66-year-old male patient who previously underwent resection of sigmoid colon cancer and its liver metastasis. His follow-up contrast-enhanced CT scan revealed a mass shadow at around the gastrosplenic ligament, which gradually increased in size. Because it could not be pathologically diagnosed by transgastric EUS-FNA, en bloc resection wasperformed surgically for the tumor in the greater omentum. Hematoxylin-eosin staining of the resected specimen showed fibroblast-like cellswith hyperplasia of bold collagen fibersand spindle-shaped nucleus. While the immunostaining findings denied a diagnosis of mesenchymal neoplasm such as GIST, leiomyosarcoma, or schwannoma, it was pathologically diagnosed as a desmoid tumor. He has been followed up without any recurrence for 2-and-a-half years after the surgical resection. Desmoid tumors tend to be locally invasive; thus, there is the potential for local recurrence, although the frequency of distant metastasis is very low. In cases in which the tumor increases in size, en bloc resection with sufficient surgical margin should be performed. Cases of desmoid tumors originating from the greater omentum are reportedly rare; however, en bloc resection may be useful for both diagnosis and treatment of tumors of the greater omentum showing increased size that are also surgically resectable.
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PMID:[Resection of a Desmoid Tumor Originating from the Greater Omentum after Surgery for Colon Cancer and Liver Metastasis-A Case Report]. 3069 92