Adult ; Humans ; Male ; Multiple Myeloma ; pathology ; Neoplasm Invasiveness

OBJECTIVETo study the optimal surgical resection length for esophageal carcinoma.

METHODSSpecimens of seventy patients with esophageal squamous cell carcinoma resected and collected in our hospital were made into pathologic giant sections. Direct intramural infiltration, multicentric carcinogenic lesion and leaping metastasis were observed in the large slice by microscope. The actual length during the operation was calculated by the ratio of shrinkage.

RESULTSDirect intramural infiltration was found in 51 (72.9%) patients, 39 proximal and 36 distal to the tumor. The mean length of direct intramural infiltration was 0.9 +/- 0.8 cm (4.0 cm maximum) proximally and 0.5 +/- 0.3 cm (2.0 cm maximum) distally. Multicentric carcinogenic lesion was found in 11 (15.7%) patients, 5 proximally, 8 distally and 2 on both sides. Proximal to the tumor, the mean distance between the multicentric carcinogenic lesion and the main lesion plus the length of the multiple carcinogenic lesion was 3.2 +/- 1.5 cm (4.7 cm maximum). Distal to the tumor, it was 3.6 +/- 2.4 cm (9.1 cm maximum). Leaping metastasis was found in 9 (12.9%) patients, 7 proximally and 4 distally. The mean distance between the leaping metastasis and the main lesion plus the length of the leaping metastatic lesion was 1.9 +/- 0.6 cm (2.9 cm maximum) proximally and 1.4 +/- 1.0 cm (2.7 cm in maximum) distally.

CONCLUSIONThe optimal surgical resection length for esophageal carcinoma should be at least 5 cm proximal to the tumor and total length on the distal side.

Ninety percent of malignant tumor treatment failure is due to post-operative metastasis and recurrence. Paget's "seed and soil" in 1889 and Ewing's "tumor metastatic fluid dynamics" in 1928 are the basic scientific concepts of metastasis. With the advanced molecular biological technology combined with the translational medicine research, possible or potential metastatic "seed"-tumor stem cells or stemness cells can be screened. In recent years, study on the "tumor derived exosome" raised the concept of pre-metastatic niche and progenitor metastasis. On the other hand, associated methodology and technology for screening and detection of the exosome had been established, which provides feasible methods for screening, prediction and individual therapy. It will be the new era for cancer prevention and intervention in translational medicine area.
Humans ; Neoplasm Invasiveness ; Neoplasm Metastasis ; Neoplasm Recurrence, Local ; Neoplasms ; pathology ; Translational Medical Research

A 7-year-old girl was admitted to Xiangya Hospital due to systemic lymphadenectasis for 2 months and skin ecchymosis for 3 days. Nine months ago, the girl experienced painless nodules in the left lower extremity with no apparent causes. Three months later, dermatorrhagia and ecchymosis occurred in many regions such as the periocular areas, conjunctiva, oral mucosa, perineal area, and groin, with a "raccoon sign" in both eyes; superficial lymphadenectasis and hepatosplenomegaly were also observed in many regions. The pathological sections for the skin nodules showed malignant tumors in lymphohematopoietic cells, and in combination with clinical manifestations, immunohistochemistry, and positive results for CD4, CD56, and CD123 by bone marrow flow cytometry, the girl was diagnosed with blastic plasmacytoid dendritic cell neoplasm. Then high-risk ALL regimen was applied as the chemotherapy for this girl. At present, the girl has been followed up for 3 months; ecchymosis has disappeared, and the enlarged lymph nodes have shrunk. No abnormal cells have been found in bone marrow morphological examination, and bone marrow flow cytometry has shown that primitive precursor cells account for 1.5% and express CD33, CD34, CD123, and CD117.
Child ; Dendritic Cells ; pathology ; Ecchymosis ; pathology ; Female ; Humans ; Neoplasm Invasiveness ; Skin ; pathology ; Skin Neoplasms ; pathology

Hepatocellular carcinoma (HCC) is a kind of highly aggressive tumor of the digestive system. Several studies have confirmed that microvascular invasion (MVI) is an independent risk factor for early recurrence and poor prognosis of HCC after surgery. Currently, pathological examination is the gold standard for diagnosing MVI. This paper summarizes concept, prognosis, preoperative prediction and treatment plan based on literature review of MVI in HCC.
Carcinoma, Hepatocellular/pathology* ; Humans ; Liver Neoplasms/pathology* ; Microvessels/pathology* ; Neoplasm Invasiveness/pathology* ; Prognosis ; Retrospective Studies

Adult ; Carcinoma, Hepatocellular ; pathology ; secondary ; Humans ; Liver Neoplasms ; pathology ; Lymphatic Metastasis ; Neoplasm Invasiveness ; Neoplasm Recurrence, Local

Arytenoid Cartilage ; pathology ; Humans ; Laryngeal Neoplasms ; diagnosis ; pathology ; Neoplasm Invasiveness ; diagnosis ; Neoplasm Staging

Humans ; Lung Neoplasms/pathology* ; Adenocarcinoma of Lung/pathology* ; Neoplasm Invasiveness ; Prognosis ; Retrospective Studies ; Neoplasm Staging ; Neoplasm Recurrence, Local/pathology*

Aged ; Humans ; Lymphoma ; pathology ; Male ; Myocardium ; pathology ; Neoplasm Invasiveness ; Testicular Neoplasms ; pathology

Schwannomas are relatively common, benign tumors that are thought to arise from the nerve sheath cell. Schwannomas of the C1 root are extremely rare and seldom invade lateral masses because they gradually increase in size and can extend through the wide space behind the lateral mass instead of the intervertebral foramen. We present here an unusual case of a benign schwannoma that aggressively invaded the lateral mass of C-1.
Female ; Humans ; Middle Aged ; Neoplasm Invasiveness ; Neurilemmoma/*pathology ; Spinal Neoplasms/*pathology ; Spinal Nerve Roots/*pathology