Granular cell tumor (GCT) is a rare neoplasm that develops in the gut's submucosal layer. We report the case of a male with a history of surgically excised colon neoplasm where a rectal polyp was identified during a follow-up endoscopy. The lesion, eventually identified as a GCT, was endoscopically removed by band ligation-assisted mucosectomy. This may be the second report of a colorectal GCT ...

症例は81歳男性で，便通異常を主訴に前医を受診した．下部消化管内視鏡検査でS状結腸に全周性の2型病変を認め，生検では中分化腺癌が検出された．CT検査では明らかなリンパ節転移や遠隔転移は認めず，同病変に対して腹腔鏡下S状結腸切除術を施行した．術後病理組織検査では，中分化腺癌と，synaptophsinが陽性，Ki67陽性細胞が80％以上のNET G3を伴う部分を認め，mixed neuroendocrine-non-neuroendocrine neoplasm（以下MiNEN）と診断した．高齢であり，術後補助療法を施行せず経過観察の方針とし，術後3年現在，再発なく経過中である．MiNENは予後不良な疾患群であるため，多くの症例は術後補助療法が施行されているのが現状である．術後補助療法を施行せず長期無再発生存中の大腸MiNENの報告はなく，文献的考察を加えて報告する．

A man with metastatic carcinoma of the colon had a bone scan which revealed urinary retention in the left kidney. Ten months later, a Tc-99m-DTPA renai glomerular study showed the left kidney to have only 8% of total renal function. Fifteen months after that, (he same kidney demonstrated 9% of total function, while the right kidney had evolving obstruction due to his neoplasm. The case sh...

Resumen Caso clínico: Mujer de 74 años que consulta a Urgencias por absceso glúteo derecho recidivante y tras hacerle body-TAC, el hallazgo incidental preoperatorio nódulos pulmonares bilaterales, se diagnóstica neoplasia ciego perforada manera contenida en forma colección retroperitoneal fistuliza tejido cutáneo. Discusión: El cáncer colo-rectal es mayor incidencia España. Los s...

Automatic polyp segmentation has proven to be immensely helpful for endoscopy procedures, reducing the missing rate of adenoma detection endoscopists while increasing efficiency. However, classifying a as being neoplasm or not and segmenting it at pixel level is still challenging task doctors perform in limited time. In this work, we propose fine-grained formulation problem. Our aims only segme...

Colorectal cancer is the third leading cause of death in Taiwan. Endoscopic resection treatment choice for stage I colorectal without risk lymph node metastases. Unfavorable histological features predict high-risk neoplasm; addition, surface change T1 under image-enhanced endoscopy also help recognition neoplasm. Through case presentation, we aim to demonstrate how discriminate from low-risk co...

Kaposi's sarcoma (KS) is a multicentric, malignant neoplasm of a complex and still unclear etiology. We present the case of 87-year-old man referred to our dermatology department with the coexistence of two separate malignances: nodular KS and colon cancer. The patient observed the cutaneous nodules 3 months after colon cancer surgery. The question arises of whether the intestinal malignancy-as...

A 74-year-old man suffered from jejunal perforation and adhesion to sigmoid colon due to adenocarcinoma associated with intraductal papillary mucinous neoplasm (IPMN) arising in a jejunal heterotopic pancreas. The jejunal lesion showed direct extension to the sigmoid colon, which was mistaken as sigmoid colon cancer by surgeons. Malignant transformation is a rare complication of a heterotopic p...

We report a case of early gastric cancer and early colon cancer detected by positron emission tomography (PET) cancer screening. A 64-year-old male patient with an unremarkable past history except for hypertension and cerebrovascular disease underwent 18F-FDG PET for cancer screening. Images revealed increased uptake in the gastric antrum and sigmoid colon. Both areas appeared suspicious for ne...