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M Paulli

Publications and source records attributed to M Paulli.

63 records · Page 4Linked to original sources
PubMed1989

Adult Ki-1-positive large cell anaplastic lymphoma presenting with skin lesions.

We describe an adult case of anaplastic large cell lymphoma who presented with nonepidermotropic skin lesions histologically simulating malignant histiocytosis. The patient later developed systemic symptoms and peripheral lymphadenopathy. B- and T-cell markers and the Leu-M1 antigen were absent from immunohistochemically investigated skin lesions and lymph nodes. The expression of Ki-1 antigen by most tumor cells was the distinctive immunologic character of this disorder which helped to clarify the pathological diagnosis. The unusual clinical, pathologic, and immunologic features of this patient represent the adult counterpart of a clinicopathologic syndrome, so far described in children and adolescents, of Ki-1 lymphoma presenting with skin lesions and peripheral lymphadenopathy. Prompt recognition of this disorder and early delivery of chemotherapy seem important to improve prognosis.

Adult↗
PubMed1989

Dedifferentiating endometrial adenocarcinoma. Report of a case.

A case of well differentiated endometrial adenocarcinoma in a 70 year-old patient is reported, which evolved to undifferentiated small cell after being treated with chemotherapy for six months. The possible mechanisms of dedifferentiation are briefly discussed.

Adenocarcinoma↗
PubMed1984

Immunofluorescence and enzyme histochemistry on consecutive sections from glycol-methacrylate-embedded bone marrow, lymph node and kidney specimens.

We describe an immunohistochemical technique adapted to tissues embedded in glycol-methacrylate (GMA). 1-micron-thick GMA sections from kidney, lymph node and bone marrow biopsies were trypsinized and then incubated with F(ab)2 antisera. GMA sections presented some distinct advantages with respect to compared paraffin and cryostatic sections: (1) reduction of background fluorescence, (2) higher resolution of morphologic details, (3) possibility of studying undecalcified bone marrow specimens and (4) possibility of coupling histochemistry with immunofluorescence on consecutive sections. Moreover, in a case of lymphoplasmacytoid lymphoma specific immunostaining for membrane IgM was obtained on GMA sections.

Acid Phosphatase↗
PubMedDate not supplied

Nijmegen breakage syndrome-associated T-cell-rich B-cell lymphoma: case report.

In 1981 Weemaes et al. first described the Nijmegen breakage syndrome (NBS), a rare autosomal recessive disorder characterized by stunted growth, microcephaly, immunodeficiency, spontaneous chromosome instability, and a peculiar predisposition to cancer development. Most NBS-related malignancies are lymphomas, but their pathologic features have rarely been specified. We report here the case of a northern Italian 8-year-old child who, 2 years after the diagnosis of NBS, developed a diffuse large B-cell lymphoma (T cell-rich B-cell lymphoma variant). The histological and immunobiological features of the lymphoma population are analyzed and discussed in detail.

Antigens, CD20↗
PubMedDate not supplied

Rhabdomyosarcoma with primary osteolytic lesions simulating non-Hodgkin's lymphoma.

We report the case of an 8-year-old child presenting with the pathological fracture of two vertebral bodies due to bone lytic lesions. Physical and instrumental examinations did not show any further evidence of disease. However, bone marrow aspirate showed an infiltrate of poorly differentiated cells. When the child was transferred to the Department of Pediatrics, lymphoblastic leukemia was suspected. Although the morphology of the bone marrow biopsy could have suggested a lymphoblastic lymphoma, further immunochemical and immunological studies together with the study of tissue surface antigens resulted in a diagnosis of embryonal rhabdomyosarcoma with an unusual presentation.

Antigens, Differentiation↗
PubMedDate not supplied

Gene expression of pyrogenic cytokines in Hodgkin's disease lymph nodes.

BACKGROUND: Inflammatory cytokines released by either the neoplastic or reactive cells in Hodgkin's disease (HD) might mediate its peculiar clinical and histopathological features. We investigated by Northern blotting the gene expressions of the pyrogenic and inflammation-associated cytokines IL-1 alpha, IL-1 beta, TNF-alpha, TNF-beta (lymphotoxin) and IL-6 in 14 HD lymph nodes and studied their relation to systemic symptoms (B symptoms). METHODS: Two ug of poly(A)+RNA from 14 HD lymph nodes (8 from symptomatic and 6 from asymptomatic patients, of different histological type and disease stage) were subjected to agarose electrophoresis, Northern blotted and hybridized to the various cytokine cDNA probes. RESULTS: The inflammatory cytokines were expressed very heterogenously in HD, even in lymph nodes with the same histological type and with similar stromal inflammatory reactions. IL-1 beta was increased about 2 to 10 times in 5 of 8 lymph nodes from patients with B symptoms, whereas the other cytokines were heterogenously expressed in both symptomatic and asymptomatic patients. Statistical analysis on densitometric values demonstrated that the difference in IL-1 beta expression between symptomatic and asymptomatic patients was significant (p less than 0.02). CONCLUSIONS: These results support the hypothesis of increased IL-1 levels in tumoral lymph nodes from symptomatic HD patients.

Cytokines↗
PubMedDate not supplied

Reactive hemophagocytosis in Ki-l positive large cell lymphoma: a case study.

A case of large cell lymphoma presenting with hemophagocytic syndrome is reported. The clinicopathological findings suggested a diagnosis of malignant histiocytosis, but on the basis of immunohistological studies Ki-l lymphoma was diagnosed. Neoplastic cells expressed activation antigens such as HLA-DR, IL 2R, T10 and Ki-l, and showed high proliferative activity, but were devoid of T and B cell markers. The high percentage of reactive macrophages found in the bone marrow and lymph node probably reflected the release of lymphokines by the tumor population. The patient was treated with aggressive chemotherapy and is in complete remission at 8 months from diagnosis.

Adolescent↗