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Primary esophageal small cell carcinoma (PESCC) is a highly aggressive malignancy, and its detailed clinical behaviors have remained virtually unknown. Because of the rapid tumor progression, the diagnosis of esophageal small cell carcinoma at early stage is extremely difficult in clinical practice. Adavosertib Wee1 inhibitor Currently, only a handful of PESCC cases have been reported.

Case 1 A 62-year-old man was diagnosed with an esophageal submucosal tumor by endoscopy. Endoscopic ultrasonography showed a 0.8 cm low echo nodule in the muscularis mucosa. As the patient refused to undergo endoscopic resection, neoplasia was detected by endoscopy 1 year later. Case 2 A 68-year-old woman was diagnosed as having an esophageal submucosal tumor by endoscopy at a local hospital. About 2 wk later, we performed endoscopic ultrasonography and found a 1 cm low echo nodule in the muscularis mucosa; the submucosal was thinner than normal but still continuous; mucosal hyperemia and erosion were found on the surface of the tumor. Endoscopic submucosal dissection (ESD) was performed and the histopathological finding showed a small cell carcinoma invading the submucosal layer.

Early esophageal small cell carcinoma shows submucosal infiltrating growth with a hypoechoic mass in the muscularis mucosa as diagnosed by endoscopic ultrasonography. It is easily misdiagnosed as submucosal masses. Endoscopic manifestations should be identified and pathological biopsies should be employed. ESD may be performed to provide an opportunity for early treatment of PESCC.

Early esophageal small cell carcinoma shows submucosal infiltrating growth with a hypoechoic mass in the muscularis mucosa as diagnosed by endoscopic ultrasonography. It is easily misdiagnosed as submucosal masses. Endoscopic manifestations should be identified and pathological biopsies should be employed. ESD may be performed to provide an opportunity for early treatment of PESCC.

Multiple myeloma is a malignant hematological disease characterized by proliferation of monoclonal plasma cells mainly in the bone marrow. Extraosseous epidural plasmacytoma associated with myeloma arises from lymphoid tissue in the epidural space without focal vertebral involvement, and is rare.

A 52-year-old woman was diagnosed with kappa subtype nonsecretory multiple myeloma and presented with bilateral arm weakness 11 mo after completing multiple courses of chemotherapy. Spinal magnetic resonance imaging (MRI) showed a posterior C7-T3 epidural mass with spinal cord compression. After five courses of chemotherapy, follow-up MRI showed resolution of cord compression. A 54-year-old man presented with paraplegia 15 mo after a diagnosis of IgD kappa subtype multiple myeloma and completing multiple courses of chemotherapy. He underwent Th11 and L1 laminectomies for tumor resection because MRI showed an epidural mass causing cord compression. His-topathologic examination was consistent with IgD multiple myeloma. The patients have currently survived for 33 mo and 19 mo, respectively.

Isolated extraosseous epidural plasmacytoma associated with multiple myeloma without bony involvement is difficult to diagnose by imaging. Definitive diagnosis requires pathological and immunohistochemical examination.

Isolated extraosseous epidural plasmacytoma associated with multiple myeloma without bony involvement is difficult to diagnose by imaging. Definitive diagnosis requires pathological and immunohistochemical examination.

The laparoscopic technique has been widely applied for early gastric cancer, with the advantages of minimal invasion and quick recovery. However, there is no report about the safety and oncological outcome of laparoscopic gastrectomy with D2 lymph node dissection for patients after neoadjuvant chemoradiotherapy.

A 60-year-old man was diagnosed with advanced distal gastric cancer, cT4aN1M0 stage III. The neoadjuvant chemoradiotherapy was performed based on the regimen of gross tumor volume 50G y/25 f and clinical target volume 45 Gy/25 f, as well as concurrent S-1 60 mg Bid. Then laparoscopic distal gastrectomy with D2 lymph node dissection was undertaken successfully for him after achieving partial response evaluated by radiological examination. The patient recovered smoothly without moderate or severe postoperative complications. The postoperative pathological stage was ypT3N0M0 with American Joint Committee on Cancer tumor regression grade 1. He was still in good condition after 5 years of follow-up.

Neoadjuvant chemoradiotherapy followed by laparoscopic technique could be applicable and may achieve satisfactory oncological outcomes. Our finding requires further validation by cohort studies.

Neoadjuvant chemoradiotherapy followed by laparoscopic technique could be applicable and may achieve satisfactory oncological outcomes. Our finding requires further validation by cohort studies.

Primary ovarian mucinous carcinoma is a rare histologic subtype of epithelial ovarian carcinoma and exhibits considerable morphologic overlap with secondary tumour. It is hard to differentiate primary from metastatic ovarian mucinous carcinoma by morphological and immunohistochemical features. Because of the histologic similarity between primary ovarian mucinous carcinoma and metastatic gastrointestinal carcinoma, it has been hypothesized that ovarian mucinous carcinomas might respond better to non-gynecologic regimens. However, the standard treatment of advanced ovarian mucinous carcinoma has not reached a consensus.

A 56-year-old postmenopausal woman presented with repeated pain attacks in the right lower quadrant abdomen, accompanied by diarrhoea, anorexia, and weight loss for about 3 mo. The patient initially misdiagnosed as having gastrointestinal carcinoma because of similar pathological features. Based on the physical examination, tumour markers, imaging tests, and genetic tests, the patient was clotherapy.

Giant cell tumor (GCT) is a benign lesion and rarely involves the patella. This disease is characterized by a relatively high recurrence rate after primary treatment.

resection has been a predominant option for recurrent GCT. However, total patellectomy can lead to disruption of the knee. Therefore, exploration of functional reconstruction of the extensor mechanism is worthwhile.

A 54-year-old woman presented with right knee pain and swelling, and was diagnosed as having a GCT in the patella following curettage and autograft. Medical imaging revealed a lytic and expanded lesion involving the whole patella with focal cortical breaches and pathological fracture. Based on the combination of histological, radiological, and clinical features, a diagnosis of recurrent GCT in the patella was made (Campanacci grade III). After a multidisciplinary team discussion, three-dimensional (3D)-printed custom-made patellar endoprosthesis was performed following

resection for reconstructing the extensor mechanism. The patient was followed for 35 mo postoperatively.