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  1. An ectopic gallbladder is a rare anomaly and can result in the misinterpretation of imaging findings and clinical confusion. Knowledge of such anomalies facilitates accurate diagnoses and prompt management. We...

    Authors: Kanako Omata, Mariko Yoshida, Kan Suzuki, Hiroshi Kawashima and Jun Fujishiro
    Citation: Surgical Case Reports 2022 8:51
  2. Conversion surgery, which is defined as chemotherapy or chemoradiotherapy followed by radical surgery, may improve survival of patients with initially unresectable advanced biliary tract cancer, including gall...

    Authors: Yusuke Wakasa, Yoshikazu Toyoki, Tomomi Kusumi, Yuma Kameyama, Tadashi Odagiri, Hiroyuki Jin, Makoto Nakai, Kazunori Aoki, Hiroaki Kawashima and Masaaki Endo
    Citation: Surgical Case Reports 2022 8:50
  3. Replaced right hepatic artery (rRHA) is a common vascular variation, and combined resection of this vessel is sometimes needed for the curative resection of pancreatic head malignancy. Safe surgical management...

    Authors: Shintaro Takeuchi, Yoshiyasu Ambo, Yoshihisa Kodama, Minoru Takada, Kentaro Kato, Fumitaka Nakamura and Satoshi Hirano
    Citation: Surgical Case Reports 2022 8:49
  4. Clostridium perfringens sepsis associated with massive intravascular hemolysis has an extremely poor prognosis. We here report a case of C. perfringens sepsis associated with massive intravascular hemolysis that ...

    Authors: Goro Takahashi, Yoshiharu Nakamura, Tomohiro Hayakawa, Takashi Ono, Kazuhiko Endo and Hiroshi Yoshida
    Citation: Surgical Case Reports 2022 8:48
  5. Although there is no established treatment strategy for liver metastasis of leiomyosarcoma, liver resection has been reported to be effective in some cases. However, almost all liver resections performed for l...

    Authors: Shoichi Tsuzaka, Yoh Asahi, Toshiya Kamiyama, Tatsuhiko Kakisaka, Tatsuya Orimo, Akihisa Nagatsu, Takeshi Aiyama, Takeyuki Uebayashi, Hirofumi Kamachi, Masatake Matsuoka, Kento Wakabayashi, Takuya Otsuka, Yoshihiro Matsuno and Akinobu Taketomi
    Citation: Surgical Case Reports 2022 8:47
  6. Anomalous bifurcation of the right superior pulmonary vein is an important anomaly that should be recognized not only in respiratory and cardiac surgeries, but also in esophageal surgery for the safe performan...

    Authors: Naoki Kuwayama, Isamu Hoshino, Hisashi Gunji, Toru Tonooka, Hiroaki Soda, Takeshi Kurosaki, Nobuhiro Takiguchi, Yoshihiro Nabeya and Wataru Takayama
    Citation: Surgical Case Reports 2022 8:46
  7. The major sites of distant metastases of papillary thyroid carcinoma (PTC) are the lung and bone; metastasis to the liver is rare. Although the postoperative serum thyroglobulin (Tg) level after total thyroide...

    Authors: Minoru Kihara, Akira Miyauchi, Mitsuyoshi Hirokawa, Makoto Fujishima, Hiroo Masuoka, Takuya Higashiyama, Naoyoshi Onoda, Yasuhiro Ito and Akihiro Miya
    Citation: Surgical Case Reports 2022 8:45
  8. Benign multicystic peritoneal mesothelioma (BMPM) is a benign tumor that usually occurs in middle-aged females. Although several published studies have reported the occurrence of this tumor in the abdominal ca...

    Authors: Hiroyuki Oshikiri, Yohei Ozawa, On Suzuki, Masahiro Usuda and Go Miyata
    Citation: Surgical Case Reports 2022 8:44
  9. Pygopagus is a type of conjoined twin binding at the buttocks. Some cases of pygopagus involve the fusion of the gastrointestinal tract, urinary tract, and spinal cord. Few cases of male pygopagus have been re...

    Authors: Chiyoshi Toyama, Motonari Nomura, Yuko Tazuke, Chisato Yokota, Naoki Kagawa, Haruhiko Kishima, Akihiro Yoshimura, Takeshi Ujike, Akira Nagahara, Norio Nonomura, Tateki Kubo, Futoshi Matsui, Fumi Matsumoto and Hiroomi Okuyama
    Citation: Surgical Case Reports 2022 8:43
  10. Undifferentiated carcinoma with osteoclast-like giant cells (UCOGCs) is a rare subtype of pancreatic cancer (PC), and its clinicopathological characteristics are still unclear. Herein, we report a case of init...

    Authors: Yosuke Igarashi, Takeshi Gocho, Tomohiko Taniai, Tadashi Uwagawa, Ryoga Hamura, Yoshihiro Shirai, Jungo Yasuda, Koichiro Haruki, Kenei Furukawa and Toru Ikegami
    Citation: Surgical Case Reports 2022 8:42
  11. Non-anastomotic thoracic aortic graft rupture is extremely rare and difficult to diagnose. Non-obstructive general angioscopy can help monitor the aortic intima and detect the locations of abnormal findings, w...

    Authors: Fumio Yamana, Koichi Maeda, Yuma Hamanaka, Noriko Kodani, Keitaro Domae, Masatoshi Hata, Yoshiharu Higuchi, Yukitoshi Shirakawa and Takafumi Masai
    Citation: Surgical Case Reports 2022 8:41
  12. Situs inversus totalis (SIT) is a rare congenital abnormality in which the thoracic and abdominal organs are reversed or mirrored from their usual positions. We herein report the first case of robot-assisted t...

    Authors: Kaoru Katano, Noriyuki Inaki, Takahisa Yamaguchi, Hiroto Saito, Mari Shimada, Shiro Terai, Koichi Okamoto, Hideki Moriyama, Jun Kinoshita, Keishi Nakamura and Itasu Ninomiya
    Citation: Surgical Case Reports 2022 8:40
  13. Despite improvement of postoperative management, pancreatoduodenectomy still has a high rate of major complications. Therefore, careful assessment is critically important when we consider high risk surgery for...

    Authors: Yu Suyama, Koichiro Haruki, Ryoga Hamura, Masashi Tsunematsu, Yoshihiro Shirai, Tomohiko Taniai, Mitsuru Yanagaki, Kenei Furukawa, Shinji Onda, Hiroaki Shiba and Toru Ikegami
    Citation: Surgical Case Reports 2022 8:39
  14. Mixed neuroendocrine-non-neuroendocrine neoplasm (MINEN) is a rare disease and there is scarce literature on its diagnosis, treatment, and prognosis. We encountered two unusual cases of MINEN in the biliary tr...

    Authors: Ayano Tamaki, Yuma Tani, Hiroki Sato, Ryuichi Yoshida, Kazuya Yasui, Shigeru Horiguchi, Takashi Kuise, Yuzo Umeda, Kazuhiro Yoshida, Tomokazu Fuji, Kenjiro Kumano, Kosei Takagi, Takahito Yagi and Toshiyoshi Fujiwara
    Citation: Surgical Case Reports 2022 8:38
  15. There are many reports of non-occlusive mesenteric ischemia in patients on maintenance hemodialysis and following cardiac surgery. However, there are few reports of non-occlusive mesenteric ischemia in patient...

    Authors: Kazuki Fujii, Tadahiko Seki, Yasuyuki Nakata, Kazuaki Atagi and Takeshi Matsuyama
    Citation: Surgical Case Reports 2022 8:36
  16. Angiosarcomas are rare malignant tumors that arise from the endothelium of blood vessels. They occur most commonly in the skin and soft tissue, and less commonly in the breast, liver, bone, and spleen. Gastroi...

    Authors: Shinya Sakamoto, Takehiro Okabayashi, Motoyasu Tabuchi, Kenta Sui, Takahiro Murokawa and Jun Iwata
    Citation: Surgical Case Reports 2022 8:35
  17. Radioiodine (I-131) whole-body scintigraphy (WBS) is a useful modality for identifying functionally preserved thyroid tissue and metastases from differentiated thyroid cancer (DTC); however, the specificity of...

    Authors: Takahiro Murokawa, Takehiro Okabayashi, Kazuyuki Oishi, Kenta Sui, Motoyasu Tabuchi and Jun Iwata
    Citation: Surgical Case Reports 2022 8:34
  18. Causes of extrahepatic portal vein obstruction include abdominal surgeries such as pancreaticoduodenectomy. We improved jejunal variceal bleeding due to extrahepatic portal vein occlusion after pancreaticoduod...

    Authors: Shohei Shiozaki, Yasuhiro Matsugu, Michinori Hamaoka and Tatsuro Ishimoto
    Citation: Surgical Case Reports 2022 8:33
  19. Angiolipoma is a rare histological variant of lipoma. Angiolipoma commonly occurs in the subcutaneous tissues of the extremity and trunk. There are few reports of angiolipoma occurring in the chest wall.

    Authors: Takahiro Omori and Sho Nakamura
    Citation: Surgical Case Reports 2022 8:32
  20. Intracholecystic papillary neoplasm (ICPN) of the gallbladder is a rare tumor and a relatively new concept. Therefore, the natural history and imaging characteristics of ICPN have not yet been fully documented...

    Authors: Yusuke Watanabe, Naoki Mochidome, Hiromichi Nakayama, Yoshitaka Gotoh, Taro Setoguchi, Shunya Sunami, Reiko Yoneda, Yurina Ochiai, Kimihisa Mizoguchi, Hirofumi Yamamoto and Takashi Ueki
    Citation: Surgical Case Reports 2022 8:31
  21. Spontaneous rupture of a hemorrhagic hepatic cyst is extremely rare. There is no standard treatment recommended for this condition. We report two cases of hemorrhagic hepatic cysts that spontaneously ruptured ...

    Authors: Ichiya Chogahara, Akihiko Oshita, Hideki Nakahara and Toshiyuki Itamoto
    Citation: Surgical Case Reports 2022 8:30
  22. Primary pancreatic cancer with synchronous primary tumors in other organs is a rare condition, and its treatment largely depends on the progression of pancreatic cancer. Here, we describe a rare case of double...

    Authors: Takahiro Murokawa, Takehiro Okabayashi, Kenta Sui, Motoyasu Tabuchi and Jun Iwata
    Citation: Surgical Case Reports 2022 8:29
  23. Although laparoscopic incisional hernia repair, especially laparoscopic intraperitoneal onlay mesh, is a widely used technique, it can cause serious complications, including mesh erosion, adhesive bowel obstru...

    Authors: Shusaku Honma, Keisuke Tanino, Takashi Kumode, Ryosuke Mizuno, Yugo Matsui, Siyuan Yao, Teppei Murakami, Takatsugu Kan, Sanae Nakajima and Takehisa Harada
    Citation: Surgical Case Reports 2022 8:28
  24. Monomorphic epitheliotropic intestinal T-cell lymphoma (MEITL), a type of peripheral T-cell lymphoma, rarely involves the stomach as the primary organ. Advanced MEITL, for which there is currently no establish...

    Authors: Keiji Muramoto, Sachiko Kaida, Toru Miyake, Rie Nishimura, Katsuyuki Kito, Masanori Shiohara, Ryoji Kushima, Tomoharu Shimizu and Masaji Tani
    Citation: Surgical Case Reports 2022 8:27
  25. Meningioma is the most common type of benign primary brain tumor that is rarely associated with distant metastasis. No established treatment strategy for metastatic meningiomas exists to date. Herein, we repor...

    Authors: Takahiro Utsumi, Tomohito Saito, Mitsuaki Ishida, Natsumi Maru, Hiroshi Matsui, Yohei Taniguchi, Haruaki Hino and Tomohiro Murakawa
    Citation: Surgical Case Reports 2022 8:26
  26. Carbon-ion radiotherapy (CIRT) for esophageal cancer has been receiving significant attention given its high local control rates and minimal damage to normal tissues. However, the efficacy and safety of salvag...

    Authors: Kengo Kuriyama, Makoto Sohda, Hideyuki Saito, Yasunari Ubukata, Nobuhiro Nakazawa, Keigo Hara, Makoto Sakai, Akihiko Sano, Hiroomi Ogawa, Takaaki Sano, Shigeo Yasuda, Hitoshi Ishikawa, Ken Shirabe and Hiroshi Saeki
    Citation: Surgical Case Reports 2022 8:25
  27. Teratoma is the second most common mediastinal neoplasm, but malignant transformation in mature teratomas is uncommon, and cases of carcinoid tumor with teratoma are described in only a few studies. In additio...

    Authors: Takehiko Manabe, Kenta Kajiyama, Takashi Iwanami, Takeshi Hanagiri and Tatsuhiko Sako
    Citation: Surgical Case Reports 2022 8:24
  28. Everolimus is a mechanistic-target-of-rapamycin (mTOR) inhibitor bearing a potent antitumor effect against hormone receptor-positive breast cancer. Here, we report the case of a patient with recurrent breast c...

    Authors: Kaori Abe, Masafumi Shimoda, Tetsuhiro Yoshinami, Yoshiaki Sota, Tomohiro Miyake, Tomonori Tanei, Naofumi Kagara, Yasuto Naoi and Kenzo Shimazu
    Citation: Surgical Case Reports 2022 8:23
  29. Breast augmentation has been linked to various complications, including cancerous tumors. The majority type of breast cancer associated with breast augmentation is adenocarcinoma. Primary squamous cell carcino...

    Authors: Ryosuke Toyonaka, Jun Ozeki, Yumi Koyama, Saaya Takahashi, Xiaoyan Tang, Hiroko Kobayashi, Maki Amano, Keiichiro Tada, Toshio Miki and Mayumi Tani
    Citation: Surgical Case Reports 2022 8:22
  30. Conversion surgery for initially unresectable gallbladder cancer is rarely performed due to the low response rate for systemic chemotherapy, and a pathological complete response is seldom achieved.

    Authors: Yuya Miura, Ryo Ashida, Teiichi Sugiura, Katsuhisa Ohgi, Mihoko Yamada, Shimpei Otsuka, Akiko Todaka and Katsuhiko Uesaka
    Citation: Surgical Case Reports 2022 8:20
  31. The number of reports of multiple primary cancer (MPC) is increasing because of the advancement in diagnostic imaging technology. However, the treatment strategy for MPCs involving pancreatic cancer is controv...

    Authors: Junya Mita, Tomohiro Iguchi, Norifumi Iseda, Kazuki Takada, Kosuke Hirose, Naoko Miura, Takuya Honboh, Yasunori Emi, Tetsuro Akashi, Seiya Kato, Noriaki Sadanaga and Hiroshi Matsuura
    Citation: Surgical Case Reports 2022 8:19
  32. Acute pancreatitis could be an early symptom of pancreatic cancer. However, repeated pancreatitis caused by pancreatic cancer is very rare.

    Authors: Yoshiaki Tanji, Kenei Furukawa, Yoshihiro Shirai, Koichiro Haruki, Shinji Onda, Takeshi Gocho and Toru Ikegami
    Citation: Surgical Case Reports 2022 8:18
  33. Salvage surgery following definitive radiotherapy or systemic treatment has become a feasible treatment option in selected patients with advanced initially unresectable non-small cell lung cancer. Recent clini...

    Authors: Ayako Nawashiro, Fumihiro Tanaka, Akihiro Taira, Shinji Shinohara, Masaru Takenaka, Koji Kuroda and Shohei Shimajiri
    Citation: Surgical Case Reports 2022 8:17
  34. A multiseptate gallbladder is a very rare congenital malformation in which the lumen is divided into variously sized multiseptal compartments. The pathogenesis and natural history of this disease remain uncert...

    Authors: Noboru Oyachi, Fuminori Numano, Keiichi Koizumi, Atsushi Takano and Hiroshi Shibusawa
    Citation: Surgical Case Reports 2022 8:16
  35. Type A thymomas comprise a homogenous population of neoplastic epithelial cells that are characterized by a spindle/oval shape without nuclear atypia. They may be accompanied by few non-neoplastic lymphocytes....

    Authors: Sachi Kawagishi, Tomohiro Maniwa, Hirokazu Watari, Ryuhei Sakata, Akiisa Omura, Ryo Tanaka, Toru Kimura, Keiichiro Honma and Jiro Okami
    Citation: Surgical Case Reports 2022 8:15
  36. Undifferentiated carcinoma of the biliary tree is extremely rare, and biliary undifferentiated carcinoma mostly originates from the gallbladder. We herein present a case of anaplastic undifferentiated carcinom...

    Authors: Masayuki Akita, Eri Maeda, Ryo Ishida, Tatsuya Morikawa, Tohru Nishimura, Koichiro Abe, Akihito Kozuki, Tomohiro Tanaka, Yukihiro Imai and Kunihiko Kaneda
    Citation: Surgical Case Reports 2022 8:14
  37. It is quite rare for breast cancer to metastasize to the kidney with a tumor thrombus in the inferior vena cava.

    Authors: Ayako Nagata, Yoshiaki Shinden, Yuki Nomoto, Hazuki Saho, Akihiro Nakajo, Koji Minami, Yuichi Kumagae, Mari Kirishima, Tetsuhiro Owaki and Takao Ohtsuka
    Citation: Surgical Case Reports 2022 8:13
  38. Because of the coronavirus disease 2019 (COVID-19) pandemic, preoperative screenings for COVID-19 infection are often performed in many institutions. Some patients are diagnosed with COVID-19 infection by anti...

    Authors: Akiharu Kimura, Nobuhiro Morinaga, Wataru Wada, Kyoichi Ogata, Takayuki Okuyama, Hiroyuki Kato, Makoto Sohda, Ken Shirabe and Hiroshi Saeki
    Citation: Surgical Case Reports 2022 8:12
  39. Acquired jejunal diverticula are relatively rare conditions. While mostly asymptomatic, they can occasionally cause life-threatening complications requiring surgical treatment. We herein report a case of hemor...

    Authors: Sayumi Kurita, Kazuo Kitagawa, Naoki Toya, Mutsumi Kaji, Satoshi Yoshioka, Yuki Hiramoto, Shuichi Fujioka, Naoto Takahashi and Ken Eto
    Citation: Surgical Case Reports 2022 8:11
  40. Progressive familial intrahepatic cholestasis (PFIC) is a heterogeneous group of genetic autosomal recessive diseases that cause severe cholestasis, which progresses to cirrhosis and liver failure, in infancy ...

    Authors: Kazunori Masahata, Takehisa Ueno, Kazuhiko Bessho, Tasuku Kodama, Ryo Tsukada, Ryuta Saka, Yuko Tazuke, Shuji Miyagawa and Hiroomi Okuyama
    Citation: Surgical Case Reports 2022 8:10
  41. Sciatic hernias are rare pelvic floor hernias that occur through the sciatic foramen and often present as abdominal or pelvic pain, particularly in women. Historically, they were repaired using an open approac...

    Authors: Mutsumi Fujimoto, Masashi Miguchi, Hiroshi Mitsuta, Satoshi Ikeda, Hideki Nakahara and Toshiyuki Itamoto
    Citation: Surgical Case Reports 2022 8:9
  42. Tumor-to-tumor metastasis is a rare phenomenon in which primary tumor cells metastasize hematogenously into another tumor. Herein, we report an extremely rare case of a renal cell carcinoma metastasis into a p...

    Authors: Shunryo Minezaki, Takeyuki Misawa, Hiroyuki Tsukayama, Makoto Shibuya, Keita Wada, Keiji Sano, Makoto Mochizuki, Yuko Sasajima and Hiroshi Kondo
    Citation: Surgical Case Reports 2022 8:8
  43. Solid pseudopapillary neoplasm (SPN) is a rare pancreatic tumor that predominantly affects young females. Prognosis is excellent; however, 10–15% of patients show metastasis at the time of surgery or develop t...

    Authors: Kiyonori Tanoue, Yuko Mataki, Hiroshi Kurahara, Tetsuya Idichi, Yota Kawasaki, Yoichi Yamasaki, Yoshiaki Kita, Yuto Hozaka, Hideyuki Oi, Akihiro Nakajo, Takaaki Arigami, Kosei Maemura and Takao Ohtsuka
    Citation: Surgical Case Reports 2022 8:7
  44. The novel 2019 coronavirus disease (COVID-19), which is caused by infection with the severe acute respiratory syndrome coronavirus 2, has spread rapidly around the world and has caused many deaths. COVID-19 in...

    Authors: Masahiro Sukegawa, Satoshi Nishiwada, Taichi Terai, Hiroyuki Kuge, Fumikazu Koyama, Kenji Nakagawa, Minako Nagai and Masayuki Sho
    Citation: Surgical Case Reports 2022 8:6
  45. The celiac artery stenosis due to compression by median arcuate ligament (MAL) has been reported in many cases of pancreaticoduodenectomy, but not in cases of esophagectomy. Recently, the celiac artery stenosi...

    Authors: Keita Hanada, Shigeru Tsunoda, Satoshi Ogiso, Tatsuto Nishigori, Shigeo Hisamori and Kazutaka Obama
    Citation: Surgical Case Reports 2022 8:5
  46. Arteriovenous malformation (AVM) of the gastrointestinal (GI) tract can cause bleeding. The treatment choice for GI tract AVM is surgical resection of the involved bowel segment with complete resection of the ...

    Authors: Yoshihiro Kurata, Koichi Hayano, Keisuke Matsusaka, Hisashi Mamiya, Masaya Uesato, Kentaro Murakami, Masayuki Kano, Takeshi Toyozumi, Yasunori Matsumoto, Hiroshi Suito, Tetsuro Isozaki, Gaku Ohira, Hideki Hayashi and Hisahiro Matsubara
    Citation: Surgical Case Reports 2022 8:4
  47. The administration of direct-acting antiviral agents in patients with liver cirrhosis and hepatitis C has been shown to improve liver function and long-term prognosis after sustained virological response (SVR)...

    Authors: Ryoga Hamura, Shinji Onda, Yoshihiro Shirai, Jungo Yasuda, Koichiro Haruki, Kenei Furukawa, Taro Sakamoto, Takeshi Gocho and Toru Ikegami
    Citation: Surgical Case Reports 2022 8:3
  48. Perforation of the ileal J-pouch after restorative proctocolectomy and ileal pouch–anal anastomosis are extremely rare. There has been no report of perforation of the ileal J-pouch occurring twice over several...

    Authors: Kengo Shibata, Shota Ebinuma, Sodai Sakamoto, Asami Suzuki, Yasunobu Terasaki and Akinobu Taketomi
    Citation: Surgical Case Reports 2022 8:2

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