1. Rare tumor subtypes diagnosed by molecular analysis

   • Noriomi Matsumura

   Editorial 08 March 2021 Pages: 95 - 95

2. Salvage robot-assisted radical prostatectomy after carbon ion radiotherapy: a case report

   • Hiroki Kobayashi
   • Satoshi Kobayashi
   • Masatoshi Eto

   Video article 03 January 2021 Pages: 96 - 99

   

3. Oncocytic variant, a novel subtype of chromophobe renal cell carcinoma: a report of two cases and a literature review

   • Takashi Karashima
   • Naoto Kuroda
   • Tadanori Yamaguchi

   Case report Open access 01 December 2020 Pages: 100 - 106

   

4. A male with primary accessory breast carcinoma in an axilla is strongly suspected of having hereditary breast cancer

   • Eriko Takahashi
   • Kaori Terata
   • Yoshihiro Minamiya

   Case report Open access 10 January 2021 Pages: 107 - 111

   

5. Positive outcome of first-line therapy for a SMARCA4-deficient thoracic sarcomatoid tumor

   • Shigeru Tanaka
   • Shuhei Hayashi
   • Masaru Kondo

   Case report 18 February 2021 Pages: 112 - 115

   

6. Renal allograft rejection after treatment with nivolumab in patients with metastatic renal cell carcinoma

   • Gaku Ishikawa
   • Takayuki Sugiyama
   • Hideaki Miyake

   Case report 01 January 2021 Pages: 116 - 118

   

7. Gallbladder cancer detected by elevated serum KL-6 levels during the follow-up of interstitial pneumonia: a case report

   • Yoshikuni Yonenaga
   • Manabu Kurosawa
   • Shunichi Higashide

   Case report Open access 03 January 2021 Pages: 119 - 126

   

8. Pure large cell neuroendocrine carcinoma of the gallbladder, is surgical relentlessness beneficial? A case report and literature review

   • Anisse Tidjane
   • Nabil Boudjenan
   • Benali Tabeti

   Case report 03 January 2021 Pages: 127 - 133

   

9. Experience of the pancreas duodenectomy for so-called carcinosarcoma of the common bile duct:a case report and review of literature

   • Suguru Sasamoto
   • Takeshi Aoki
   • Masahiko Murakami

   Case report 03 January 2021 Pages: 134 - 138

   

10. Implantation of rectosigmoid cancer in a preexisting anal fissure

    • Harunobu Sato
    • Miho Shiota
    • Ichiro Uyama

    Case report 05 January 2021 Pages: 139 - 143

    

11. Histiocytic sarcoma following combination chemotherapy for primary mediastinal germ cell tumor: a diagnostic dilemma

    • Hiroshi Yaegashi
    • Yuki Kato
    • Atsushi Mizokami

    Case report 09 January 2021 Pages: 144 - 148

    

12. First successful case of percutaneous transabdominal thoracic duct embolization (PTTDE) for chylous ascites resulting from laparoscopic gastric cancer surgery

    • Hideyuki Yokokawa
    • Takao Katsube
    • Shunichi Shiozawa

    Case report Open access 23 January 2021 Pages: 149 - 153

    

13. A case of lymph node dissection for contralateral axillary lymph node metastasis of ipsilateral breast tumor recurrence after identifying the primary lymphatic drainage by lymphoscintigraphy

    • Haruhi Maseki
    • Shin Takayama
    • Akihiko Suto

    Case report 29 January 2021 Pages: 154 - 158