Primary tumor size predicts pathologic findings in the retroperitoneal lymph nodes in patients with paratesticular rhabdomyosarcoma.

To determine patient and tumor characteristics that could predict pathologic findings after retroperitoneal lymph node dissection (RPLND) in paratesticular rhabdomyosarcoma (PTRMS), a total of 266 cases of PTRMS diagnosed between 1973 and 2010 were identified from a national database. RPLND dissection was performed in 67 patients, with a mean age of 14.9 years and median survival of 80 months. PTRMS occurred more often on the right side, had embryonal histology, and had an average size of 6.7 cm. Retroperitoneal lymph node (RPLN) metastasis occurred in 40 % (n = 27) of patients. Tumor size and age were strong predictors of finding rhabdomyosarcoma in the retroperitoneal lymph nodes when examined by pathologists. Primary tumors larger than 7 cm in size developing in males 12 years or older had four times more odds of being associated with positive findings on pathologic examinations of the retroperitoneal lymph nodes. Patient race, histology, and tumor laterality were not significant predictors of PTRMS metastasis to the RPLN basin. Patients 12 years or older with PTRMS larger than 7 cm have a significant risk of retroperitoneal lymph nodes involvement with PTRMS. Detailed pathologic examination of the lymph nodes in these patients is recommended.

Biology of the estrogen receptor, GPR30, in triple negative breast cancer.

BACKGROUND: Triple-negative (TN) breast cancer lacks a known signaling pathway amenable to targeted therapy. The authors hypothesized that the G protein-coupled receptor GPR30 may be present in TN breast cancer and serve a role for tumor growth. METHODS: A retrospective pathology study and chart review were conducted. All patients aged ≤49 years from 2000 to 2008 were included (n = 24). Concurrent patients aged ≥50 years were randomly selected. Paraffin sections were stained for GPR30 and reviewed by a pathologist blinded to estrogen receptor and progesterone receptor status. Disease-free survival was analyzed versus age and receptor status. Means were compared using 2-sample t tests and proportions using chi-square analysis. RESULTS: Twenty-seven patients tested GPR30 positive and 21 GPR30 negative. Seventeen of 18 TN cancers tested positive for GPR30 (P < .0001). Recurrence at a mean follow-up of 36 months was 22.2% in the GPR30-positive group and 9.5% in the GPR30-negative group. CONCLUSIONS: GPR30 is prevalent in TN breast cancer and associated with young age and possibly recurrence.

Distribution of monoclonal antiferritin antibody in Kaposi's sarcoma, Hodgkin's disease, and hepatocellular carcinoma.

The immunotherapeutic treatment of cancers using antibodies (naked or conjugated to a drug, toxin, or radionuclide) relies upon the preferential expression of a targeted antigen on the cancer cell compared to normal tissues. Polyclonal antiferritin antisera have shown selective distribution and therapeutic efficacy when radiolabeled in Hodgkin's disease and hepatoma. In this immunohistochemical study, we investigated the distribution of ferritin in tumors from 6 patients with Kaposi's sarcoma, 12 patients with Hodkgin's disease, and 9 patients with hepatoma, as well as in selected normal tissues. We found that the monoclonal antiferritin antibody binds primarily to histiocytes in samples from Kaposi's sarcoma and Hodgkin's disease. One hepatocellular carcinoma showed diffuse cytoplasmic staining with ferritin. Deposition of the monoclonal antibody was not detectable in the remaining hepatocellular carcinoma samples.

Primary B-cell lymphoma of the clivus: case report.

BACKGROUND: Lymphomas usually present in extranodal sites late in the course of the disease. Moreover, it is uncommon for a primary non-Hodgkin's lymphoma to present with cranial nerve palsies; reports in the literature are rare. CASE DESCRIPTION: We report the case of a 60-year-old woman with complaints of headache and double vision. MRI revealed an expansive clival lesion without pituitary invasion. An endoscopic transsphenoidal procedure was performed for diagnosis and partial resection of the mass. CONCLUSION: Primary diffuse large B-cell lymphoma of the clivus is rare. An endoscopic transsphenoidal approach to the skull base is described, along with characteristic clinical, radiologic, and pathologic findings of the lesions.

Iatrogenic lymphoproliferative disorders in non-transplantation settings.

Over the last decade, it has become clear that iatrogenic immunodeficiency-related lymphoproliferative disorders can occur in non-transplantation settings. These lymphoproliferative disorders occur predominantly in patients with rheumatologic diseases who are treated with immunomodulatory drugs. Like immunodeficiency-related lymphoproliferations in other settings, these represent a spectrum of lymphoid neoplasms and are frequently associated with Epstein-Barr virus. The distribution of histologic types of iatrogenic lymphoproliferations in non-transplantation settings appears to differ from that seen in other immunodeficiency settings with a probable increase in representation of Hodgkin's disease and lymphoproliferations resembling Hodgkin's disease. Recognition of these immunodeficiency-related lymphoproliferative disorders is important for appropriate patient management.