Browsing by Author "Shooshtarizadeh, Tina"

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    An Unusual Case of Posttransplant Osteoid Osteoma
    (Başkent Üniversitesi, 2009-06) Ossareh, Shahrzad; Naseem, Soubia; Shooshtarizadeh, Tina
    Posttransplant tumors are one of the important long-term complications of renal transplant. However, aside from noninvasive Kaposi sarcomas, increased production of benign tumors has not been observed after renal transplantation, and to our knowledge, no cases of posttransplant osteoid osteoma have been reported so far. Osteoid osteoma is a common, benign, bone neoplasm that occurs typically in the long bones and presents with severe, intractable pain. Here, we present a 49-year-old man, who presented with increasing bone pain in the right upper arm, 7 months after a renal transplant. Despite an initial normal right humerus radiograph, a raised subperiosteal tumor was diagnosed in the medial border of the right humerus a few months later. An excisional biopsy was performed, and the pathologic report was an osteoid osteoma. The patient’s pain, which had been resistant to most analgesics, completely disappeared after surgery, and he is currently devoid of any lesions, 9 months after excision of the tumor.
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    Relation Between Pretransplant Serum Levels of Soluble CD30 and Acute Rejection During the First 6 Months After a Kidney Transplant
    (Başkent Üniversitesi, 2013-06) Shooshtarizadeh, Tina; Ataipour, Yousef; Ossareh, Shahrzad; Mohammadali, Ali
    Objectives: The immunologic status of kidney allograft recipients affects transplant outcome. High levels of pretransplant serum soluble CD30 correlate with an increased risk of acute rejection. Studies show conflicting results. We evaluated the relation between pretransplant serum sCD30 levels with the risk of posttransplant acute kidney rejection in renal transplant recipients. Materials and Methods: This prospective cohort study was performed between March 2010 and March 2011 on 77 kidney transplant recipients (53 men [68.8%], 24 women [31.2%]; mean age, 41 ± 14 y). Serum samples were collected 24 hours before transplant and analyzed for soluble CD30 levels by enzyme-linked immunosorbent assay. Patients were followed for 6 months after transplant. Acute biopsy-proven rejection episodes were recorded, serum creatinine levels were measured, and glomerular filtration rates were calculated at the first and sixth months after transplant. Preoperative serum soluble CD30 levels were compared in patients with and without rejection. Results: The mean pretransplant serum soluble CD30 level was 92.1 ± 47.3 ng/mL. At 6 months’ follow-up, 10 patients experienced acute rejection. Mean pretransplant soluble CD30 levels were 128.5 ± 84 ng/mL versus 86.7 ± 37 ng/mL in patients with and without acute rejection episodes (P = .008). At 100 ng/mL, the sensitivity, specificity, and positive and negative predictive values of pretransplant serum soluble CD30 level to predict acute rejection were 70%, 73.6%, 29.1%, and 94.3%. Conclusions: We showed a significant relation between pretransplant serum soluble CD30 levels and acute allograft rejection. High pretransplant levels of serum soluble CD30 can be a risk factor for kidney transplant rejection, and its high negative predictive value at various cutoffs make it useful to find candidates with a low risk of acute rejection after transplant.