1/11. Ovarian hepatoid yolk sac tumours: morphological, immunohistochemical and ultrastructural features.AIM: The clinicopathological, immunohistochemical and ultrastructural features of two ovarian hepatoid yolk sac tumours (H-YST) from our files are reviewed. methods AND RESULTS: Using avidin-biotin-peroxidase complex technique, the immunoprofile of these tumours was compared to that of a classic yolk sac tumour and to that previously reported for hepatocellular carcinomas. The clinicopathological and morphological features of our cases are similar to the seven previously reported ovarian cases. This rare germ cell tumour occurs in young females (mean age = 17.6 years) and presents most commonly with abdominal pain and a large ovarian mass (average size = 140 mm). Histologically, the tumours display a striking resemblance to hepatocellular carcinoma. The absence of an associated typical pattern of yolk sac tumour or other germ cell neoplasm may make it difficult to recognize the germ cell origin of this lesion. Our cases demonstrated positive staining for alpha-fetoprotein and alpha-1-antitrypsin. In addition, there was immunoreactivity with polyclonal carcinoembryonic antigen (CEA) antiserum in a canalicular pattern, focal staining for inhibin, oestrogen and progesterone receptors and absence of immunoreactivity for CK7 that contrasts with the immunophenotype of a usual yolk sac tumour. CONCLUSIONS: Ovarian H-YST and hepatocellular carcinoma share a similar immunoprofile. Ovarian H-YST is a highly aggressive tumour, most patients exhibit recurrence or die of disease within 2 years of diagnosis.- - - - - - - - - - ranking = 1keywords = cell tumour (Clic here for more details about this article) |
2/11. Endodermal sinus tumour of the ovary in pregnancy.We present a case of a 30-year-old pregnant woman in whom an ovarian mass was identified by ultrasonography at 15 weeks' gestation. A markedly elevated maternal serum alphafetoprotein (MSAFP) suggested a diagnosis of endodermal sinus tumour of the ovary. A right salpingo-oophorectomy at 19 weeks' gestation enabled histological confirmation of the diagnosis and suggested a stage 1 tumour. Unfortunately tumour recurrence necessitated further laparotomy and delivery by caesarean section at 32 weeks' gestation. A total abdominal hysterectomy and left salpingo-oophorectomy was undertaken with resection of the splenic flexure and formation of a double-barrelled colostomy after which no gross intraperitoneal tumour remained. Three weeks later a new suprahepatic tumour mass was excised and the colostomy was closed. The patient then received four cycles of combination chemotherapy with cisplatin, etoposide, and bleomycin. Unfortunately she developed a faecal fistula at the site of the colostomy. Germ cell tumours are highly responsive to chemotherapy. Over-zealous surgery particularly involving bowel resection may cause unnecessary morbidity and compromise the outcome.- - - - - - - - - - ranking = 1keywords = cell tumour (Clic here for more details about this article) |
3/11. An unusual presentation of an intra-parenchymatous frontal yolk sac tumour : case report.yolk sac tumours are rare conditions among the germ cell tumours. Intracerebral germ cell tumours are exceedingly rare. A 15 year old girl presenting with a one week history of raised intracranial pressure is described. She had bilateral papilloedema and a right 6th nerve palsy. CT scan showed an intra-parenchymatous right frontal ring enhancing lesion of 2 cms diameter. The patient underwent microsurgical total excision of the tumour, followed by chemotherapy. She was asymptomatic at three years following surgery.- - - - - - - - - - ranking = 2keywords = cell tumour (Clic here for more details about this article) |
4/11. Primary pleuro-pulmonary malignant germ cell tumours.Lungs and pleura are rare sites for malignant germ-cell tumours. Two cases, pure yolk-sac tumour and yolk sac-sac tumour/embryonal carcinoma are described in young males who presented with rapid progression of respiratory symptoms. The malignant mixed germ cell tumour occurred in the right lung, while the yolk-sac tumour had a pseudomesotheliomatous growth pattern suggesting a pleural origin. Alpha-foetoprotein was immunohistochemically demonstrated in both.- - - - - - - - - - ranking = 6keywords = cell tumour (Clic here for more details about this article) |
5/11. Unusual intrathoracic location of a primary germ cell tumour.The primary location of non-metastatic germ cell tumours of the chest is the anterior mediastinal compartment. Germ cell tumour arising from lung parenchyma is one of the rarest conditions in human and only a few cases of choriocarcinomas and yolk sac tumour have been reported to date. Here we report a case of intrapulmonary mixed type germ cell tumour, containing embryonal carcinoma, choriocarcinoma and yolk sac tumour elements. diagnosis of the lesion was achieved by open thoracotomy and bulk of the tumour was resected by right upper lobectomy.- - - - - - - - - - ranking = 7keywords = cell tumour (Clic here for more details about this article) |
6/11. Primary mixed germ cell tumour of the liver--a case report.Germ cell tumours in liver are uncommon. Fewer than 20 cases have been reported in the literature. Primary mixed malignant germ cell tumours of liver are even rare. Here we describe a case of primary mixed malignant germ cell tumour of left lobe of liver in a two and half year old male boy. This is the first reported case of primary mixed malignant germ cell tumour with components of yolk sac tumour and mature teratoma in an infant. The patient complained of gradual increase in abdominal distension, upper abdominal pain and loss of weight. ultrasonography and computed tomography of the abdomen revealed a large hepatic mass. serum alpha-feto protein levels were raised. Left lobectomy of liver was done and chemotherapy was initiated. Histopathology of specimen disclosed yolk sac tumour and mature teratoma. Levels of serum alpha-feto protein declined rapidly. Widespread intrahepatic metastasis developed and patient died due to liver dysfunction after six months of left lobectomy.- - - - - - - - - - ranking = 8keywords = cell tumour (Clic here for more details about this article) |
7/11. Pineal yolk sac tumour with a solid pattern: a case report in a Chinese adult man with Down's syndrome.Intracranial germ cell tumours are rare. The incidence of primary intracranial yolk sac tumour is even more uncommon, with only two reported cases being associated with Down's syndrome in the English literature. This report details the findings of yolk sac tumour in the pineal region affecting a 22 year old Chinese man with Down's syndrome. histology revealed yolk sac tumour with only a solid pattern, potentially mimicking the more common germinoma in the pineal region. No other germ cell components were identified. This is the third report of intracranial yolk sac tumour manifesting in a patient with trisomy 21. The pathology of this tumour and its differential diagnoses are discussed.- - - - - - - - - - ranking = 1keywords = cell tumour (Clic here for more details about this article) |
8/11. Extragonadal nonseminomatous germ cell tumour with hypercalcemia, masquerading as renal cell carcinoma: a case report.Humoral hypercalcemia secondary to the production of parathyroid hormone-related peptide has been reported to occur in up to 17% of patients with renal cell carcinoma but has been reported only rarely in patients with other genitourinary cancers and never in patients with testicular or extragonadal nonseminomatous cancers. A 54-year-old man is reported who had an extragonadal nonseminomatous germ cell tumour with hypercalcemia that masqueraded as a renal cell carcinoma with metastases. The hypercalcemia was suspected to be humorally mediated.- - - - - - - - - - ranking = 5keywords = cell tumour (Clic here for more details about this article) |
9/11. Late recurrence of testicular cancer.Late recurrence of nonseminomatous germ cell tumours of the testis is rare. The authors report on a 35-year-old man treated initially for embryonal cell carcinoma of the testis with metastases, who presented 12 years later with an increasing serum alpha-fetoprotein level and a biopsy-proven embryonal cell cancer in the hilus of the left lung. Because the tumour was highly resistant to two separate courses of cis-platinum-based chemotherapy and one course of radiotherapy, surgical resection for salvage was carried out. The patient was free of disease 3.5 years after the second operation. The possible reasons for the occurrence of this highly resistant metastatic testicular cancer are discussed. They include a second primary tumour and malignant degeneration of the original tumour. In this patient the latter cause was the most plausible.- - - - - - - - - - ranking = 1keywords = cell tumour (Clic here for more details about this article) |
10/11. Case report: intraperitoneal metastases from testicular germ cell tumour.We report a patient with intraperitoneal metastases following treatment for seminoma. This is an unusual site of spread and was accompanied by transformation of tumour morphology.- - - - - - - - - - ranking = 4keywords = cell tumour (Clic here for more details about this article) |
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