Cases reported "Granuloma, Plasma Cell"

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1/541. Inflammatory pseudotumor of the liver and pregnancy.

    Inflammatory pseudotumor of the liver (IPL) is a rare, nonneoplastic entity of unknown etiology. Our patient represents the first reported case of IPL that was managed conservatively during an intrauterine pregnancy. ( info)

2/541. fever of unknown origin due to inflammatory pseudotumour of lymph nodes.

    The clinical features of inflammatory pseudotumour of lymph nodes, a distinct non-malignant histopathological entity firstly described in 1988, are summarized based upon a detailed analysis of 4 personal cases and 47 cases reported in the literature. The mean age of the patients is 38 years (range 8 to 82 years) and there is no gender predilection. One third present with asymptomatic lymphadenopathy and 47% present with fever, nearly all meeting the criteria of fever of unknown origin. Abdominal complaints are occasionally present. Intermittence of symptoms is common. Hepatosplenomegaly is unusual. All lymph node areas may be involved but abnormalities are mostly confined to one or two anatomic regions. No extranodal involvement has been reported although inflammatory pseudotumour may occur in several organs with similar morphological features and identical signs of inflammations. Routine blood tests are normal except for signs of inflammation. The lesions are gallium-avid. diagnosis is based upon typical histopathological features. The prognosis is favorable and surgical resection frequently leads to cure. Spontaneous resolution of symptoms has been reported and nonsteroidal anti-inflammatory drugs may suppress the clinical manifestations. ( info)

3/541. Esophageal inflammatory pseudotumor associated with a pseudodiverticulosis cyst: two inter-related lesions?

    There are some unusual esophageal lesions, which by their rarity, and location or etiology raise difficult therapeutic decisions for surgeons. In this report, we describe an esophageal inflammatory pseudotumor (IPT) associated with a pseudodiverticulosis cyst in an adult male. We discuss the pathogenic and the anatomopathological aspects of these uncommon associated lesions as well as the treatment of ITP. ( info)

4/541. Renal failure resulting from infiltration by inflammatory myofibroblastic tumor responsive to corticosteroid therapy.

    Inflammatory myofibroblastic tumor (IMT) is a rare disease of inflammatory and spindle cell proliferative lesions in multiple sites. Most frequently reported in the lungs, a variety of extrapulmonary sites have been described. We report the first case of IMT causing renal failure by massive bilateral renal infiltration. Renal function continued to deteriorate (peak serum creatinine level, 8.4 mg/dL) despite placement of a ureteral stent. The kidneys were diffusely enlarged on computed tomographic (CT) scan. Renal biopsy showed myofibroblastic proliferation and inflammatory infiltration. Renal failure responded favorably over weeks to corticosteroid therapy (serum creatinine level, 2.8 mg/dL) with a marked reduction in bilateral renal enlargement by CT scan. ( info)

5/541. Is calcifying fibrous pseudotumor a late sclerosing stage of inflammatory myofibroblastic tumor?

    Calcifying fibrous pseudotumor is a recently described distinctive lesion, characterized by the presence of abundant hyalinized collagen with psammomatous or dystrophic calcifications and a lymphoplasmacytic infiltrate. The cause and pathogenesis are unclear, but a possible relationship with other pseudotumors, like nodular fasciitis or inflammatory myofibroblastic tumor, has been proposed by some authors. However, cases with overlapping histologic features have not been reported. A 17-year-old girl with multiple peritoneal calcifying fibrous pseudotumors and inflammatory myofibroblastic tumors (inflammatory pseudotumors) is described. Some multinodular lesions showed calcifying fibrous pseudotumors next to inflammatory myofibroblastic tumors. Transitional stages between calcifying fibrous pseudotumor and inflammatory myofibroblastic tumor were also present. This case clearly illustrates a histogenetic relationship between calcifying fibrous pseudotumor and inflammatory myofibroblastic tumor, and it suggests that calcifying fibrous pseudotumor is a late sclerosing stage of inflammatory myofibroblastic tumor, at least in some cases. ( info)

6/541. Inflammatory pseudotumour of the liver--evidence for malignant transformation.

    A case of inflammatory pseudotumour of the liver is reported, and evidence is presented for its subsequent evolution into malignant non-Hodgkin's lymphoma. Such postulated malignant transformation challenges the assumption that hepatic inflammatory tumours are entirely benign lesions. ( info)

7/541. Inflammatory pseudotumor of the urinary bladder with aberrant expression of cytokeratin. Report of a case with cytologic, immunocytochemical and cytogenetic findings.

    BACKGROUND: Cytologic descriptions of inflammatory pseudotumor of the urinary bladder are exceedingly rare. We describe here an additional case of this disease, including its cytologic features and aberrant expression of cytokeratin. CASE: A 35-year-old male presented with gross hematuria but no history of bladder surgery. urine cytology revealed a few atypical spindle cells suspicious for sarcoma. Histologically, the lesion consisted of spindle cells of various sizes and shapes, proliferating in irregularly running bundles, but no severe nuclear atypia or pathologic mitosis was found. Immunocytochemically, these cells were unexpectedly positive for cytokeratin as well as for vimentin and muscle actin. All metaphase cells examined revealed a normal male karyotype. CONCLUSION: Inflammatory pseudotumor must be distinguished in particular from leiomyosarcoma and spindle cell carcinoma. To avoid an erroneous diagnosis, recognition of this entity is important, together with careful histologic examination and awareness of the possible aberrant expression of cytokeratin. ( info)

8/541. Massive pelvic and femoral pseudotumoral osteolysis secondary to an uncemented total hip arthroplasty.

    A 51 year-old man developed an extensive osteolytic response to wear debris in an uncemented porous-coated total hip arthroplasty, with metal/polyethylene interface, which had been implanted eighteen years previously. This reaction, which involved the upper femur and the ilium, produced a mass which compressed the pelvic viscera. ( info)

9/541. Inflammatory pseudotumor of the spleen associated with a cavernous hemangioma diagnosed at intra-operative cytology: report of a case and review of literature.

    This report presents a case of a 40 year old Caucasian female with a 15 cm inflammatory pseudotumor (IPT) of the spleen with associated areas of splenic hemangioma of the cavernous type. Abdominal CT showed a largely fatty splenic mass with enhancing septations, and scattered calcifications, and a small density in the liver. Grossly, the splenic lesion showed a lobulated cut surface with areas of myxoid change, necrosis, hemorrhage and cystic softening. The diagnosis of IPT was suggested at intraoperative consultation using cytologic smears and was, subsequently confirmed on permanent sections. Histologically, the lesion consisted of a densely collagenized spindle cell stroma with patchy aggregates of lymphocytes and plasma cells, and scattered foci showing hemosiderin-laden macrophages extracellular calcium deposits and osseous metaplasia. The stromal spindle cells were immuoreactive for smooth muscle actin and vimentin confirming their myofibroblastic phenotype. There were extensive areas of infarction within the mass. The patient, however, remained asymptomatic preoperatively. Histologic analysis in this case raises the possibility that low grade, perhaps repetitive, trauma to the hemangioma may have resulted in intralesional hemorrhages which, through a process of organization, may have evolved into this sizable inflammatory pseudotumor. In addition, this report reviews the current literature on the clinical significance and presentation, morphologic and immunohistochemical findings, prognosis, differential diagnosis, pathogenesis and therapy of the splenic IPT. ( info)

10/541. Tc-99m colloid and Ga-67 imaging of splenic inflammatory pseudotumor correlation with ultrasound, CT, and MRI.

    Splenic inflammatory pseudotumor is extremely rare and may mimic splenic neoplasms, such as lymphomas or hamartomas, clinically and radiologically. A case of a surgically proved splenic inflammatory pseudotumor is presented in which Tc-99m colloid SPECT and Ga-67 scintigraphy characterized the changes in the spleen, but the findings of ultrasound and unenhanced CT and MRI were nonspecific. This report indicates the utility of radionuclide imaging for diagnosing splenic inflammatory pseudotumor. ( info)
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