Loss of heterozygosity of the RB gene is a poor prognostic factor in patients with osteosarcoma.

PURPOSE: The usual therapy of osteosarcoma is neoadjuvant chemotherapy, followed by surgery, then by postoperative chemotherapy. There is no prognostic factor to predict, at diagnosis, the histologic response and final outcome. Inactivation of the retinoblastoma-susceptibility gene RB is associated with the pathogenesis of several human cancers. In primary osteosarcomas, loss of heterozygosity (LOH) at the RB locus has been found in greater than 60% of cases. The aim of this study was to determine the potential early prognostic value of LOH of RB gene on the biopsy material at diagnosis. PATIENTS AND METHODS: Forty-seven patients with primary osteosarcoma, treated in four French institutions, were studied. LOH was studied by polymerase chain reaction (PCR) of an informative RB DNA polymorphism. RESULTS: Assessment of LOH at the RB gene could be completed on 34 heterozygous patients only. LOH was found in 24 cases (70%). The event-free survival (EFS) rate at 60 months is 100% for patients without LOH, 43% for all patients with RB LOH, and 65% for nonmetastatic patients with RB LOH. The difference in EFS is highly significant at P = .008 and P = .024, respectively. Histologic response after preoperative chemotherapy did not show significant correlation with LOH status. CONCLUSION: RB gene LOH appears to be an early predictive feature for osteosarcomas that indicates a potential unfavorable outcome. RB LOH study might shortly help to identify high-risk patients earlier. If this is verified, therapy could then be adapted earlier to the individual's real risk of relapse.

Detection of human papillomavirus DNA in squamous bronchial metaplasia and squamous cell carcinomas of the lung by in situ hybridization using biotinylated probes in paraffin-embedded specimens.

We examined a series of paraffin-embedded tissue specimens from 10 cases of squamous bronchial metaplasia and 33 cases of squamous cell carcinoma of the lung for histologic characteristics and for the presence and typing of human papillomavirus (HPV) by molecular in situ hybridization with biotinylated probes types 6, 11, 16 and 18 under stringent conditions (temperature, 19 degrees C). Fourteen of these lesions (32.5%) showed typical condylomatous histologic changes. Human papillomavirus DNA was present in seven (16%) specimens. Type 6 HPV DNA was detected in one of the squamous bronchial metaplasia cases. In six of the squamous cell carcinomas cases (18%), HPV DNA was identified (type 18, three cases; type 16, one case; type 11, one case; and type 6, one case); one of the squamous cell carcinoma specimens contained both HPV types 16 and 18. Our data confirm the presence of HPV DNA in squamous metaplastic bronchial mucosa and epidermoid lung carcinoma on paraffin-embedded tissues. This suggests that an HPV infection with benign or potentially oncogenic HPV types could be associated not only with genital tumors, but also with bronchial and lung tumors. The role of HPV DNA in the process of malignancy conversion is not yet known; HPV DNA could possibly be a cocarcinogenic factor. In situ hybridization with biotinylated probes is a useful and appropriate method of retrospective analysis of HPV DNA sequences in routinely paraffin-embedded lesions. It may be used to identify patients at risk of more serious or possibly malignant progression.

Inducible nitric oxide synthase, anti-oxidant enzymes and Helicobacter pylori infection in gastritis and gastric precancerous lesions in humans.

Chronic inflammation induced by Helicobacter pylori infection has been associated with an increased risk of stomach cancer. We have analysed 167 stomach biopsies from 99 patients for H. pylori infection and immunohistochemically for the expression of inducible nitric oxide synthase (iNOS), catalase and superoxide dismutases (SODs) as markers of oxidative stress. Biopsies were graded as follows on the basis of histology: normal, superficial gastritis, variable severity of atrophic gastritis with or without intestinal metaplasia, and dysplasia. iNOS was detected in inflammatory cells in all types of gastritis with or without H. pylori infection and independently of its severity. In foveolar cells, iNOS was observed in approximately 25% of all biopsies showing any type of gastritis, but in a markedly higher proportion of dysplastic samples. Catalase and Mn-type SOD in inflammatory cells and catalase in foveolar cells were more frequently observed in marked atrophic gastritis biopsies than in less severe gastritis. Individual differences were found in the expression of these enzymes within groups with the same severity of gastritis. Prolonged oxidative stress in severe gastritis and dysplasia may play an important role in gastric carcinogenesis, through increased damage of DNA and tissue by reactive oxygen and nitrogen species.

Effects of proton beam irradiation on uveal melanomas: a comparative study of Ki-67 expression in irradiated versus non-irradiated melanomas.

AIMS: To assess the cellular proliferation using the monoclonal antibody Ki-67, in paraffin embedded uveal melanomas irradiated by proton beam, as well as in non-irradiated uveal melanomas. METHODS: 30 enucleated eyes were included for histopathological study and Ki-67 immunostaining. Patients were enucleated between 1991 and 1996 for uveal melanoma, 14 after proton beam irradiation and 16 without treatment (control group). The mean follow up period was 2.5 years after diagnosis and 1 year after enucleation. RESULTS: A significant relation was found between Ki-67 score and mitotic index (r = 0.56, p = 0.001), histological largest tumour diameter (r = 0.38, p = 0. 03), fibrosis (r = -0.35, p = 0.05), absence of tumoral pigmentation (p = 0.05), and presence of vascular thrombosis (p = 0.03). The Ki-67 score was significantly higher in the non-irradiated group (p = 0.01) and in the group of patients whose cause of enucleation was tumoral evolution (p = 0.005) compared with the group of patients enucleated after neovascular glaucoma. The Ki-67 score was very high in a case of orbital recurrence of uveal melanoma and metastatic death. 70% of metastasised tumours showed a Ki-67 score higher than the median value. CONCLUSION: Ki-67 labelling is a reliable method of estimating the proliferative activity in uveal melanomas after proton beam irradiation. The Ki-67 score is significantly correlated with prognostic variables (mitotic index and histological largest tumour diameter), and with radiation effects after proton beam irradiation.

Keratins in malignant mesotheliomas and pleural adenocarcinomas: comparative immunohistochemical analysis with polyclonal and monoclonal antibodies.

The distribution of intra-cellular keratins was studied in normal pleural mesothelium, malignant mesotheliomas and adenocarcinomas. This study was performed on deparaffinized sections of tissue fixed in Bouin's solution by indirect immunofluorescence with a monoclonal antibody (KL1) and a conventional keratin antiserum (AKS). Discrepancies were detected using one antibody or the other. Cells from normal mesothelium and 18 cases of malignant mesotheliomas (papillary, tubulary, solid epithelial type) were strongly labelled only by KL1. The 2 cases of sarcomatoid type were negative with both antibodies. In contrast 5 metastatic adenocarcinomas and 5 lung adenocarcinomas were weakly positive or negative with both antibodies. These data confirm the presence of cytokeratins in epithelial differentiation process. Although a clear-cut distinction between mesotheliomas and adenocarcinomas was not possible using these keratin antibodies. Our data point out the importance of reactivity pattern of the antibody used in such investigations.

Human papillomavirus DNA in cervix. In-situ hybridization with biotinylated probes on Bouin's fixed paraffin embedded specimens.

We examined retrospectively a series of 65 Bouin's fixed, paraffin-embedded tissue specimens from 8 condylomatous lesions, 16 condylomas associated with cervical intraepithelial neoplasia (CIN), and 12 neoplasia without condylomatous signs, for histological characteristics, the detection of viral structural antigen, the presence and typing of HPV DNA by molecular in situ hybridization with biotinylated probes types 6, 11, 16 and 18 under stringent conditions (Tm - 12 degrees C). HPV DNA was present in 34/65 (52%) specimens. Detection of viral structural antigen was positive in only 14% (3/22) specimens. HPV DNA were identified in 9/9 (100%) condylomatous lesions (with HPV type 6, 11, 18). Three condylomas were coinfected with both HPV type 6 or 11 and type 18; viral antigen was found in two specimens. HPV DNA were detected in 18/31 (58%) low grade and advanced CIN associated with condylomatous changes (type 6 = 5 specimens, type 11 = 3 specimens, type 16 = 4 specimens, type 18 = 6 specimens). Four of these cases were coinfected with both HPV type 6/11 and HPV type 16/18. Viral antigen was negative in all specimens. HPV DNA were detected in 7/25 (28%) advanced intra-cervical neoplasia (CIN III) without anatomopathological condylomatous changes (type 6 = 1 specimen, type 16 = 3 specimens, type 18 = 3 specimens). One of these specimens contained both HPV types 6 and 18. Viral antigen was found in one case. Our data confirm the association of HPV types 6 and 11 with condyloma and low grade neoplasia; HPV types 16 and 18 were associated with advanced cervical neoplasia.(ABSTRACT TRUNCATED AT 250 WORDS)

Cytological aspiration of intraocular retinoblastoma in an 11-year-old boy.

Only a few cases of retinoblastomas in older children have been reported and the clinical diagnosis may be difficult. In case, fine-needle aspiration from an atypical retinal mass of an 11-yr-old boy was performed. The vitreous fluid was stained with Diff-Quik for an immediate cytological examination and the diagnosis of retinoblastoma was suggested. The rest of the specimen was separated into two parts. One was stained with May-Grünwald-Giemsa and the other was centrifuged, embedded in paraffin, and finally stained with hematoxylin-eosin-safran. The undifferentiated blue cells were associated with abundant necrotic debris and portions of capillaries with perivascular tumor cells around. The cytoplasm of the tumor cells was strongly stained with neuron-specific enolase antibody. The diagnosis of retinoblastoma was confirmed. The specimen of enucleation confirmed the diagnosis. In conclusion, cytological aspiration can categorically diagnose suspected intraocular tumors of older children in whom clinical and noninvasive investigations have failed to establish the diagnosis.

Fine needle aspiration cytology of a solid papillary carcinoma of the breast. A case report with immunohistochemical studies.

BACKGROUND: Solid papillary carcinoma of the breast was recently described. This tumor display distinctive clinical and morphologic features. It is an intraductal papillary carcinoma frequently associated with mucinous carcinoma and infiltrating ductal carcinoma not otherwise specified. CASE: Fine needle aspiration cytology (FNAC) of a solid papillary carcinoma of the right breast in an 82-year-old female, demonstrated a cellular specimen of discohesive, small, uniform and ovoid tumor cells, with occasional loose cluster. The cytoplasm was abundant and finely granular. The nuclei were round, without marked atypia. The nucleoli were inconspicuous. SCant mucinous material was present. The diagnosis was confirmed histologically and immunohistochemically. CONCLUSION: The cytologic aspects of solid papillary carcinoma of the breast suggest a carcinoma with endocrine differentiation and a weak mucinous component.

[Developments in the treatment of osteosarcoma since 1979. Report of the statistics at the Centre Léon-Bérard]. / [Evolution du traitement de l'ostéosarcome depuis 1979. A propos de la statistique du Centre Léon-Bérard.

Seventy-two patients with a localized osteosarcoma were treated between September 1979 and December 1987 by neoadjuvant chemotherapy, local surgery and post-operative chemotherapy. Chemotherapy regimens varied throughout the years but always comprised high dose methotrexate with leucovorin rescue and adriamycin pre-operatively for children under the age of 15, and ifosfamid and cis platinum in adults. Post-operative chemotherapy for bad responders (greater than 10% of residual malignant cells), was at first an association of adriamycin and cis platinum, and later of holoxan and cis platinum. Surgery changed from amputation to local conservative surgery (graft or prosthesis) which is now the most frequent surgery--61% of the patients are alive and disease-free at 5 years. Good responders to pre-operative chemotherapy have a much better prognosis (81% at 5 years) than bad responders (45%). There is no significant difference according to age or pre-operative chemotherapy regimen.

[Standards, options and recommendations (SOR) for diagnosis, treatment and follow-up of osteosarcoma. Groupe de travail SOR]. / Standard, Options et recommandations (SOR) pour le diagnostic, le traitement et la surveillance de l'ostéosarcome.

CONTEXT: The "Standards, Options and Recommendations" (SOR) project, started in 1993, is a collaboration between the Federation of the French Cancer Centres (FNCLCC), the 20 French Cancer Centres and specialists from French Public Universities, General Hospitals and Private Clinics. For pediatric issues, this project is a collaboration between the FNCLCC and the French Society of Pediatric Oncology (SFOP). The main objective is the development of clinical practice guidelines to improve the quality of health care and outcome for cancer patients. The methodology is based on literature review and critical appraisal by a multidisciplinary group of experts, with feedback from specialists in cancer care delivery. OBJECTIVES: To develop clinical practice guidelines according to the definitions of Standards, Options and Recommendations for the clinical care of osteosarcoma in children and adult. METHODS: Data have been identified by literature search using Medline (1985-december 1998) and the expert groups personal reference lists. The main criteria considered were incidence, risk factors, prognostic factors and efficacy of treatment. Once the guidelines were defined, the document was submitted for review to 27 national and international independent reviewers, and to the medical committees of the 20 French Cancer Centres and, in particular, the 4 which have particular expertise in pediatric cancer management. RESULTS: The main recommendations for osteosarcoma management are that: 1) the clinical diagnosis is based on appropriate clinical and radiological findings; 2) the final diagnosis is pathological and the biopsy should be performed by the surgeon who will subsequently perform the definitive surgery; 3) surgical biopsy must be of adequate size and performed by an experienced surgeon; 4) the therapeutic strategy for osteosarcoma is based on surgery with neoadjuvant and adjuvant chemotherapy given in experienced centres. Inclusion of high dose methotrexate is recommended for children, and the dose of methotrexate must be adapted for adults. Inclusion of children in SFOP protocols and adults in EORTC and FNCLCC clinical trials is recommended; 5) treatment of metastatic osteosarcoma is based on chemotherapy and surgery to lung metastases which may be curative. Amputation is rarely appropriate. Inclusion of children in SFOP and of adult in EORTC and FNCLCC clinical trials for metastatic osteosarcoma is recommended; 6) at the present time, there are no clear data on which to base guidelines for timing and duration of follow-up studies in this condition.

[Primary pulmonary synovial sarcoma. Apropos of 1 case with cytogenetic study]. / Synovialosarcome pulmonaire primitif. A propos d'un cas avec étude cytogénétique.

Synovial sarcoma most commonly occurs in the peri-articular regions of the extremities. We report a case of primary pulmonary monophasic synovial sarcoma. This tumor is extremely rare and shows a particular immunohistochemical pattern of great help for the diagnosis. Cytogenetic study confirm the diagnosis by showing the specific t (X; 18) chromosomal translocation, characteristic of synovial sarcoma in all anatomic locations.

[Hepatic epithelioid hemangioendothelioma. A case with liver transplantation. Review of the literature]. / Hémangioendothéliome épithélioïde hépatique. Un cas avec transplantation hépatique. Revue de la littérature.

Epithelioid hemangioendothelioma (HEE) is an unusual malignant neoplasm of vasculo-endothelial origin, arising in soft tissues, lung and liver. One case of hepatic HEE is reported in a 32 year-old man wit an isolated multinodular hepatomegaly. The diagnosis was made by the histologic examination of biopsy specimens. At the time of diagnosis, there was evidence of pulmonary metastasis. However, an orthotopic liver transplantation was performed. The tumor cells were immunoreactive with factor VIII-related antigen, BNH9 and vimentin. There was no expression of cytokeratin and epithelial membrane antigen. The patient is alive and well 24 months after. The thoracic X-ray are unchanged. This case is compared with the 84 others cases of the literature. Fourteen experienced a favorable outcome after transplantation. Extra-hepatic dissemination doesn't contra-indicate the graft. But hilar vascular involvement may be correlated with worse prognosis.

[Actinomycoses. Anatomopathological study. Apropos of 10 cases]. / Les actinomycoses. Etude anatomo-pathologique. A propos de 10 observations.

From 1975 to 1983, ten cases of actinomycosis have been reported. The anatomical localizations were cervicofacial (3 cases), thoracic (2 cases), abdominal (4 cases) and aneurysmal (1 case). The interest and limits of sampling and histological staining methods are discussed. In 8 cases out of 10, the surgical biopsy established the diagnosis of actinomycosis. The "actinomycosis granule" is revealed by the standard staining and characterized with the Gram stain. This latter allowed us to confirm the diagnosis of actinomycosis in 6 cases and to rectify it in 3 other cases that were botryomycosis. Culture of tissue gave the diagnosis in one case of actinomycosis non identified by histology.

[Cystic lymphangioma of the mediastinum. 2 personal cases and a review of the literature]. / Lymphangiomes kystiques du médiastin. 2 cas personnels, revue de la littérature.

Two mediastinal lymphangiomas (KLM) are described, in 36 and 41 year-old women. They presented as an incidental finding on chest radiograph. The mediastinal mass was anterior or posterior, compressing the adjacent vital structures, and cystic on computed tomography. The complete surgical removal was possible, but complicated by the size (12 x 7 x 4 cm and 10 x 7 x 5 cm), the hypervascularization and the infiltrative tendency of the lesions. The patients are well 36 and 30 months after removal. We compare these cases with 109 previously reported. They account for 1 p. 100 of the whole lymphangiomas and for 0.5 to 4.5% of all mediastinal tumours. The congenital or infantile cervico-mediastinal lymphangiomas are more frequent (10%). The general signs, symptoms, pathological findings, treatment and pathogenetic theories are discussed.

[Extra-pulmonary lymphangiomyomatosis presenting as an exudative enteropathy with a rapid fatal course]. / Lymphangiomyomatose extra pulmonaire révélée par une entéropathie exsudative d'évolution rapidement fatale.

We report a case of lymphangiomyomatosis (LAM) which occurred in a twenty six year old woman, presenting with protein losing enteropathy and pancreatic fibrosis due to lymphostasis. Despite having no pulmonary lesion, the patient died quickly. The proliferation of smooth muscle involved the mesenteric, peripancreatic lymphatic channels but also the submucosal lymphatic vessels of the duodenum. Only one other case of LAM presenting with protein losing enteropathy has been reported, in which there were no abnormalities in the intestinal tractus or in the pancreas.

[A case of aggressive juvenile fibromatosis of the mandible. Review of the literature]. / Un cas de fibromatose juvénile agressive de la mandibule. Revue de la littérature.

We report a new case of aggressive juvenile fibromatosis (A.J.F.) in a 20-month-old girl. The lesion affected the inferior border of the left mandible and the adjacent soft tissues. The child presented with a painless mass, which had grown over a period of 2 months. Radiographs and computed tomographic scan showed a multilacunar bone defect with subcutaneous and gingival involvement. A biopsy was performed, followed by a partial hemimandibulectomy and a costal graft. The surgical specimen measured 4 X 3 X 3 cm. The patient did well 1 year after surgery. 16 cases of A.J.F. have been reported; with ours, 14 are mandibular. A.J.F. is a locally aggressive lesion, which doesn't metastasize. It occurs chiefly in childhood and adolescence from 1 1/2 to 18 years (median 6.5 year-old). Duration of symptoms prior to presentation varies from a few weeks to months. Clinically, it is a firm nodule. Radiographs are non-specific, but 9 cases have poorly defined destruction of the mandibular inferior border. Following a block resection of the tumor (13 cases), there is no recurrence. In this review, we discuss the clinico-pathologic diagnosis of this impressive tumor which is compared with other mandibular fibrous tumors in children.

[Amphicrine, mucoid and argyrophile tumors of the breast. Histochemical and ultrastructural study of 2 cases]. / Tumeurs amphicrines, mucoïdes et argyrophiles, du sein. Etude histochimique et ultrastructurale de deux observations.

The authors report two cases of mucoargyrophilic carcinomas of the breast, occurring in 73 and 81 year old women. Both tumors consist of a central mucoid carcinoma surrounded by solid areas with lobular or endocrinoid features. Most cells showed an abundant eosinophilic granular cytoplasm or a mucinous appearance. The histochemical reactions (Grimelius-Alcian Blue, Grimelius-Mucicarmine) and the ultrastructural study of the peripheral areas disclosed several cell types: poorly differentiated or mucinous cells were present in both cases; but most of the cells were argyrophilic and contained in their hyaloplasm numerous dense core "neurosecretory" granules; such cells revealed many microfilaments arranged in bundles or in whorls. Amphicrine cells were easily demonstrated by histochemical staining and their cytoplasm showed both endocrine granules and mucinous vesicles. These features suggest a possible relationship to other argyrophilic tumors of the breast. The histogenesis of these tumors is still little known.

[Glomangioma: an unusual ethmoid-nasal tumor]. / Glomangiome: une tumeur ethmoïdo-nasale inhabituelle.

Glomus tumors are benign vascular tumors usually located in the fingertip dermis. Extracutaneous glomus tumors are extremely rare. A new case of sino-nasal glomangioma is reported and both clinical and histological features and biological behavior of glomus tumors in this exceptional site are described.

[Histopathologic study of melanoma of the choroid after proton therapy]. / Etude histopathologique des mélanomes choroïdens après protonthérapie.

To evaluate irradiation effects on choroidal melanomas, histopathologic findings of 18 eyes whose primary treatment was enucleation were compared to 15 eyes enucleated after proton beam irradiation. Irradiated tumors showed more likely necrosis (p = 0.01) had balloon cells (p = 0.01), and inflammatory infiltrate (p = 0.05). In the irradiated group, the prevalence of tumor blood vessel damage was higher (p = 0.0002) and mitotic figures were fewer (p = 0.01). These findings suggest that proton beam irradiation damages tumor cells and alters the tumor's capacity for cellular reproduction. It damages blood vessels leading to tumor necrosis. It induces an inflammatory response of unknown effects. Radiosensitivity of choroidal melanomas cannot be assessed using conventional histologic methods. However, tumor necrosis, mitotic activity and rate of balloon cells can help to establish tumoral sensitivity to irradiation.

[A case of hepatic and splenic peliosis occurring in the puerperium after normal pregnancy]. / Une observation de péliose hépatique et splénique survenue dans le post-partum au terme d'une grossesse normale.

The authors report a case of Peliosis of the liver and of the spleen that occurred at term after a normal pregnancy that lasted 38 weeks. The delivery was complicated by amniotic infection with hemorrhagic shock and uterine inertia that gave rise to the need for a sub-total hysterectomy in order to stop the bleeding. The progress of the case was made worse by the development of the disseminated intra-vascular coagulation syndrome with septicaemia and pulmonary oedema. When the operation was carried out to stop the bleeding it was noted that the liver was enlarged, hard, smooth and dark in colour and the histological specimen showed a major degree of Peliosis hepatis. The same lesions were found in the region of the spleen and a lymph node. The patient died 14 days after delivery of acute renal failure together with cerebral oedema and septic shock. The authors consider that the aetiology of the Peliosis could be due to hormone changes of pregnancy associated with septicaemia. The anatomical evolution of Peliosis hepatis to widespread necrosis of the parenchyma makes it possible to understand that the condition of diffuse intra-vascular coagulation will not improve in the presence of hepato-cellular insufficiency.