Cases reported "Neoplasm Seeding"

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1/12. Spinal seeding of anaplastic ependymoma mimicking fungal meningitis. A case report and review of the literature.

    BACKGROUND: The spinal seeding from brain tumors sometimes mimicks fungal meningitis on examination of cerebrospinal fluid. methods AND RESULTS: A 19-year-old woman gradually developed increased intracranial hypertension. MRI identified a mass in the right parieto-occipital area. It was totally removed and histologically diagnosed as an anaplastic ependymoma. radiation- and chemotherapy were administered postoperatively. The patient reported low back pain 5 months after the surgical treatment. MRI disclosed neither spinal dissemination nor tumor recurrence at the primary site. Lumbar puncture was performed and the cerebrospinal fluid (CSF) was found to have an extremely low glucose level (5 mg/dl); no tumor cells were identified. Blood samples were obtained and a relative increase of WBC and CRP was noted. A slight degree of inflammation and low-grade fever were recorded. A tentative diagnosis of fungal meningitis was made and anti-fungal therapy was administered transventricularly and transvenously. However, her neurological condition continued to deteriorate gradually. Sequential CSF studies showed that the glucose level remained extremely low, it even decreased to 0 mg/dl Eight months after the surgical treatment, MRI with Gd-DTPA revealed marked subarachnoid enhancement in both intracranial and spinal areas. An open biopsy was performed and a histological diagnosis of intracranial and spinal seeding of the anaplastic ependymoma was returned. CONCLUSIONS: We report a patient with intracranial and spinal seeding of an anaplastic ependymoma that mimicked fungal meningitis. We discuss the difficulty of obtaining a differential diagnosis in this case and describe the mechanism of the decreased CSF glucose level.
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2/12. Local breast cancer recurrence caused by mammographically guided punctures.

    PURPOSE: To evaluate the risk of needle track seeding or tumor cell implantation as the cause of locally recurrent breast cancer after breast conserving surgery. MATERIAL AND methods: We reviewed recurrences from a consecutive series of 303 clinically nonpalpable breast cancers treated with breast conserving surgery after pre-operative localization. The median mammographic follow-up was 5.4 years. The suspicion of seeding or implantation was based on the location of the recurrent lesion in comparison with the needle path in two orthogonal mammographic projections. Pre-operative percutaneous biopsies had been done in 71% (214/303) of the cases. Postoperative radiotherapy was administered to 82% (194/238) of the invasive cancers and to 28% (18/65) of the ductal cancers in situ (DCIS). RESULTS: Locally recurrent cancer occurred in 11% (33/303) of the cases. radiotherapy demonstrated a protective effect from relapse among invasive cancers but not for DCIS. Seeding or implantation was suspected in 3 recurrent invasive cancers which had not been subject to radiotherapy. The histopathological diagnosis of the primary cancer and the recurrent cancer were the same in these cases: adenoid cystic, mucinous and tubuloductal cancer. CONCLUSION: Seeding or implantation was suspected as the cause of local recurrence in 7% (3/44) of the invasive cancers which did not receive radiotherapy.
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3/12. Diagnostic difficulty arising from displaced epithelium after core biopsy in intracystic papillary lesions of the breast.

    This study reports two cases of intracystic papillary carcinoma of the breast, which had been biopsied preoperatively using a 14 gauge (14G) core biopsy needle. In each case, a needle tract containing groups of epithelial cells within granulation tissue could be identified on histology of the excised specimen. Both cases showed extracapsular tumour, which was interpreted as displacement of epithelium related to preoperative core biopsy. Subsequent axillary lymph node sampling showed no evidence of metastasis. In one case, extracapsular tumour appeared to be in blood vessels, but flattened cells lining the spaces containing tumour failed to react with factor 8 related antigen or CD34 on immunohistochemistry. It is likely that intracystic papillary carcinomas are particularly prone to this artefact because friable tumour fragments escape, accompanied by cyst fluid, when the capsule is punctured by a 14G core biopsy needle.
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4/12. Subcutaneous implantation of liver metastasis after fine needle biopsy.

    A 50-year-old woman underwent percutaneous ultrasonographic fine needle biopsy of a suspicious liver metastasis of colon cancer. A subcutaneous metastasis developed at the site of the puncture 20 days after biopsy. Tumor recurrence in the needle biopsy track is rarely reported in the literature. The possible causes of this complication are discussed.
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5/12. Implantation metastasis along the percutaneous transhepatic biliary drainage sinus tract.

    We describe herein the case of a 75-year-old man with metastatic tumor seeding at the percutaneous transhepatic biliary drainage tract that occurred following a pylorus-preserving pancreatoduodenectomy for carcinoma of the distal common bile duct. On postoperative day 30, the catheter was removed and ethanol was injected into the percutaneous transhepatic biliary drainage sinus tract to prevent cancer implantation. One year and 3 months after the initial operation, abdominal computed tomography showed dilation of the left lateral segmental bile ducts and a 2-cm mass. The location of this mass corresponded to the puncture point from the previously performed percutaneous transhepatic biliary drainage. Implantation of the bile duct carcinoma at the percutaneous transhepatic biliary drainage sinus tract was diagnosed, and the recurrent tumor was successfully resected by performing a left hepatic lobectomy. Currently, 1 year after the second operation, the patient is in good health without any signs of recurrence. This case report demonstrates the importance of resecting the percutaneous transhepatic biliary drainage sinus tract during the initial surgery. If left in place, careful follow-up and awareness of this mode of tumor recurrence may lead to a timely resection, with preservation of a good quality of life and long-term survival.
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6/12. Subcutaneous seeding after percutaneous ethanol injection of liver metastasis.

    A 72-year-old cirrhotic woman underwent percutaneous ethanol injection treatment of a liver metastasis of unknown origin. A subcutaneous metastasis developed at the site of the punctures. Needle track seeding is a rare complication of fine-needle biopsy but has never--to the authors' knowledge--been reported after percutaneous ethanol injection. The possible causes of this complication are discussed.
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7/12. Cutaneous seeding of malignant tumours after insertion of percutaneous prosthesis for obstructive jaundice.

    Three cases of cutaneous malignant deposits at the site of skin puncture for insertion of percutaneous biliary prosthesis are described. Tumour dissemination casts doubts on the value of percutaneous intubation of the biliary tree when preparing patients for curative resection of pancreatic or biliary tumours.
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8/12. Needle tract seeding following puncture of retroperitoneal liposarcoma.

    9 case of needle tract seeding following percutaneous puncture of an avascular mass, which proved to be a retroperitoneal liposarcoma, is presented.
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9/12. Subcutaneous metastases after coelioscopic lymphadenectomy for vesical urothelial carcinoma.

    The authors report an exceptional case of subcutaneous metastatic dissemination, located at the puncture points of a coelioscopic lymphadenectomy for a vesical urothelial carcinoma. Few cases of parietal metastasis have been described after coelioscopic check-up for gynaecological and digestive tumours. The onset of this new type of serious complication suggests a need to reassess the benefits of this technique in tumours with lymphatic invasion.
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10/12. Pleural seeding from hepatocellular carcinoma: a complication of percutaneous alcohol ablation.

    The authors present a case of proved seeding of the pleural space secondary to alcohol ablation of a primary hepatocellular carcinoma. The patient underwent alcohol ablation for a 6.5-cm-diameter tumor in the right lobe of the liver; approximately 20 needle punctures were required to ensure complete or almost complete destruction of the tumor. Six months after the original ablation, a hypervascular pleural metastasis was noted adjacent to the original lesion at computed tomography. Percutaneous biopsy of the pleural lesion showed hepatocellular carcinoma.
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