Raisuke Nishiyama

Heart rate reduction during favipiravir therapy for hospitalized COVID-19 patients: experience from 6 cases

Megumi Shimada, Sakurako Tajiri, Raisuke Nishiyama, Hiroyuki Kato et autres

Favipiravir is an RNA polymerase inhibitor that was developed in Japan, and its antiviral effect is expected to be useful against coronavirus disease 2019 (COVID-19). We examined the therapeutic effect of favipiravir use for 6 patients with COVID-19. We analyzed body temperature, …

Coexistence of gastric cancer and gastric GIST with intra-tumor bleeding: successful embolization with subsequent total gastrectomy

Raisuke Nishiyama, Toshihito Ogasawara, Nana Mamuro, Yutarou Kamei et autres

BACKGROUND: Gastrointestinal stromal tumor (GIST) is a rare tumor, however, simultaneous development of gastric cancer and gastric GIST has been documented more frequently in recent years. Rupture of gastric GIST is even more rare and occurred in 7% of all GISTs. Although …

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[A Case of Retroperitoneal Liposarcoma That Required Three Times Surgical Resections during Four Years].

Ryohei Koreyasu, Hirotoshi Maruo, Raisuke Nishiyama, Masanori Yamazaki et autres

The patient was a 64-year-old man, who had undergone surgical resection for a right retroperitoneal giant tumor. The histopathological diagnosis was a well-differentiated liposarcoma. Two years and 4 months after the initial surgery, 3 recurrent lesions were found on the dorsal side …

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[Results of Preoperative Colon Stent Placement for Obstructive Colorectal Cancer].

Hajime Tsuyuki, Hirotoshi Maruo, Tadahiro Kojima, Ryohei Koreyasu et autres

We examined short-term outcomes in 34 patients who had stenting as a bridge to surgery(BTS)for obstructive colorectal cancer during the 5-year period between April 2012 and March 2017.T he patients were 22 men and 12 women with a mean age of 72.6 …

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[Findings from Total Colonoscopy in Obstructive Colorectal Cancer Patients Who Underwent Stent Placement as a Bridge to Surgery(BTS)].

Hirotoshi Maruo, Hajime Tsuyuki, Tadahiro Kojima, Ryohei Koreyasu et autres

We clinically investigated 34 patients with obstructive colorectal cancer who underwent placement of a colonic stent as a bridge to surgery(BTS), focusing on endoscopic findings after stent placement.Twenty -nine patients(85.3%)underwent colonoscopy after stent placement, and the entire large intestine could be observed …

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[Long-Term Complete Response by S-1 Chemotherapy for Gastric Cancer with Para-Aortic Lymph Node Metastases].

Tadahiro Kojima, Toshiya Akai, Kōichi Nakamura, Y. Higashi et autres

We describe a 67-year-old man with long-term CR by S-1 chemotherapy for gastric cancer with para-aortic lymph node metastases after reduction surgery. The patient presented at our hospital with epigastric pain. He was diagnosed with gastric cancer with para-aortic lymph node metastases. …

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[Case Report of a Splenic Abscess Due to Colon Cancer].

Katsunori Suzuki, Toshiya Akai, Kōichi Nakamura, Y. Higashi et autres

The patient was a 63-year-old man with a chief complaint of fever and abdominal pain. He was admitted with the diagnosis of splenic abscess on enhanced abdominal computed tomography. After improvement of general condition, we planned a colonoscopy. However, the symptoms were …

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[Cases of Obstructive Colon Cancer for Which Elective Surgery Was Performed after Colonic Stent Placement].

Hirotoshi Maruo, Kōichi Nakamura, Y. Higashi, Tsuyoshi Shoji et autres

The present study investigated the short-term outcomes of 20 patients with obstructive colon cancer who underwent colonic stent placement as a bridge to surgery (BTS) during the 3-year period between April 2012 and March 2015. Subjects comprised 13 men and 7 women, …

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[Stage IV Gastric Cancer Made Resectable Following a Chemotherapy Regimen That Included Trastuzumab-A Case Report].

Hirotoshi Maruo, Katsunori Suzuki, Shintaro Ishikawa, Y. Higashi et autres

A 70-year-old man was referred to our hospital after anemia was identified by his general practitioner. A detailed examination led to the diagnosis of unresectable StageIV gastric cancer with metastasis to the paraaortic lymph nodes. The cancer was HER2-positive; therefore, the patient …

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Inflammatory pseudotumour-like follicular dendritic cell tumour of the spleen

Raisuke Nishiyama, Satoshi Baba, Yoichi WATAHIKI, Hirotoshi Maruo

We describe an unusual case of a 73-year-old woman presenting with a solitary splenic mass 8 cm in diameter and an elevation of serum soluble interleukin-2 receptor level. The preoperative diagnosis was primary malignant lymphoma of the spleen. Splenectomy was conducted. Histological …

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[Study of S-1 and oxaliplatin(SOX) plus bevacizumab as first-line therapy in patients with unresectable colorectal cancer].

Hirotoshi Maruo, Katsunori Suzuki, Shintaro Ishikawa, Tomohiro Murakami et autres

We examined the safety and efficacy of S-1 and oxaliplatin plus bevacizumab (SOX+BV)as first-line therapy for advanced/recurrent unresectable colorectal cancer. The subjects were 14 patients with colorectal cancer who received ≥3 courses of SOX+BV therapy in our department.The dosing regimen for 1 …

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Case Reports Endoscopic Management of Biliary Stricture Following Blunt Abdominal Trauma: A Case Report 379

Raisuke Nishiyama, Satoru Kishimoto, Takafumi Hamasaki, Munehiro Saiki et autres