Rare recurrence pattern after complete response to chemotherapy in a patient with rectal cancer: a case report.

Background: Colorectal cancer (CRC) often metastasizes to the liver, lungs, lymph nodes, and peritoneum but rarely to the bladder, small intestine, and skin. We here report the rare metastasis of anal cancer in the left bladder wall, followed by metastases to the small intestine and skin, after abdominoperineal resection and left lateral lymph node dissection with chemotherapy in a patient with clinician Stage IVa disease.

Case Presentation: A 66-year-old man presented with 1-month history of bloody stool and anal pain and diagnosed with clinical Stage IVa anal cancer with lymph node and liver metastases (cT3, N3 [#263L], M1a [H1]).

Negative association between basal oxytocin and oxytocin changes after repetitive transcranial magnetic stimulation in patients with treatment-resistant depression.

Repetitive transcranial magnetic stimulation (rTMS) is a neuromodulator effective for treating depressive symptoms in patients with treatment-resistant depression (TRD). One of the multiple mechanisms for its antidepressant effects proposed is related to the hypothalamus. Oxytocin is a neuropeptide synthesized in the hypothalamus that affects human behavior and psychology, including social and affiliative behaviors, stress regulation, and fear and emotion processing.

[A Case of Signet-Ring Cell Carcinoma of the Ampulla of Vater in a Young Male].

A male in his twentieth was referred to our hospital for jaundice. Computed tomography(CT)showed dilation of the intrahepatic and extrahepatic bile ducts and showed a lesion at the ampulla of Vater, which caused obstructive jaundice. Upper gastrointestinal endoscopy revealed a tumor of protruded-predominant type with raised margins at the ampulla of Vater, and biopsy from the lesion indicated malignancy.

[A Case of Laparoscopic High Anterior Resection for Rectal Cancer with Autosomal Dominant Polycystic Kidney Disease].

The case was a 61-year-old woman. She was diagnosed with autosomal dominant polycystic kidney disease(ADPKD)at the age of 38 and started hemodialysis at the age of 42. She was diagnosed with rectal cancer(RS)at the age of 61.

[A Case of Unresectable Liver Metastasis from Rectal Cancer Treated with Conversion Therapy].

We reported a case of rectal cancer with unresectable liver metastases treated with resection of the primary lesion followed by systemic chemotherapy with curative resection. A woman in her 40s was diagnosed with rectal RS carcinoma and unresectable liver metastasis, mFOLFOX6 plus panitumumab therapy was initiated after laparoscopic high anterior resection of the rectal lesion. After 5 courses of chemotherapy, significant shrinkage of the liver metastatic lesion and increase of the remnant liver volume were observed.

[Robot Assisted Lower Anterior Resection for Anastomotic Recurrence of Colorectal Cancer-A Case Report].

Patient undergoing R0 resection have the good survival advantage following surgery for recurrent rectal cancer. Robotic surgery for anastomotic local recurrence of rectal cancer has never been reported before. An 80-year-old woman who had undergone high anterior resection for rectal cancer 1 years previously got colonoscopy.

[A Case of Metastasis to the Pancreas from Colorectal Cancer Which Was Difficult to Distinguish from Primary Pancreatic Cancer].

A man in his 50s underwent laparoscopic sigmoid colectomy for sigmoid colon cancer with liver metastasis(cT4aN1M1a, cStage Ⅳa), followed by partial liver resection(S4, S6). One and a half years after the initial surgery, CEA and CA19-9 increased, and contrast-enhanced CT and MRI showed a hypovascular lesion with dilation of the distal pancreatic duct in the pancreatic body. Adenocarcinoma was detected by brushing cytology of the lesion and pancreatic juice cytology by ERCP.

[Robotic Surgery Can Complete Radical Surgery and Urinary Tract Reconstruction for Locally Advanced Rectal Cancer with Ureteral Invasion-A Case Report].

A 82-year-old man presented with diarrhea and fatigue. He had no past medical or surgical history except chronic renal failure. Locally advanced rectal cancer with invasion to left ureter was detected in computed tomography.

[A Case of Squamous Cell Cancer of the Anus Treated with Chemoradiotherapy].

Background: In Japan, the standard treatment for squamous cell anal cancer(SCAC)has not been established. Herein, we report a case of SCAC that completely responded to chemoradiotherapy(CRT).

Case: A woman in her 80s presented with anal pain and bleeding.

[Risk Factors for Recurrence in Patients with Pathological Stage Ⅱ Colorectal Cancer].

Background: The risk factors for recurrence in patients with pStage Ⅱ colorectal cancer still remains controversial. The aim of this study was to investigate the risk factors for recurrence after surgery in patients with pStage Ⅱ colorectal cancer.

Method: We retrospectively reviewed 311 patients with primary pStage Ⅱ colorectal cancer who underwent radical resection without neoadjuvant therapy at our institute between January 2014 and December 2019.

Intra-abdominal desmoid-type fibromatosis successfully resected using laparoscopic fluorescence imaging with indocyanine green after intersphincteric resection for rectal cancer.

Successful resection of intra-abdominal tumors using indocyanine green (ICG) fluorescence imaging has not been reported. Here, we report a rare case of an intra-abdominal desmoid-type fibromatosis successfully resected using this technique after intersphincteric resection (ISR) for rectal cancer. One year after ISR for rectal cancer in a 47-year-old man, computed tomography showed a 50-mm intra-abdominal tumor near the left common iliac vein.