Nuclear Protein in Testis Midline Carcinoma Presenting in an Infant as a Pericardial Mass with Staging by F-Fluorodeoxyglucose-positron Emission Tomography/Computed Tomography.

Nuclear protein in testis (NUT) midline carcinoma (NMC) is a rare, aggressive, lethal, epithelioid, poorly differentiated cancer first described in Japan in 1991, unique in that is defined genetically rather than by histological tissue of origin. It usually arises in the body midline and presents as a mass with metastasis. An infant presenting with pneumonia was found to have a pericardial mass, NMC resected, and subsequent staging positron emission tomography (PET) showing residual mediastinal tumor and midline abdominal metastases.

Unusual Concentration of Tc-99m methylendiphosphonate in Rhabdomyosarcoma.

Extraosseous accumulation of bone-seeking agents is rare, but has been previously reported in pediatric sarcomas and neuroblastomas. We present an unusual case of a 5-month-old male with an abdominal mass observed clinically by his parents and referring pediatrician. Contrast abdominal computerized tomography confirmed the presence of a large pelvic mass that was diagnosed pathologically as embryonal rhabdomyosarcoma.

Medulloblastoma with myogenic differentiation: long-term survival in a patient treated with aggressive combination therapy and autologous stem cell transplantation.

Medulloblastoma with myogenic differentiation (MMD) is a rare and aggressive variant of medulloblastoma, occurring predominantly in children. There have been only two case reports of long-term survival previously published. We report a case of long-term disease-free survival in a 21-year-old diagnosed with MMD.

Myxedema ascites in the posttransplant setting: case report.

Ascites is a rare but important complication of hypothyroidism. Because of the rarity of the disease and the inconsistency of symptoms associated with hypothyroidism, patients often go undiagnosed for months. Institution of thyroid replacement hormone results in rapid and complete resolution of ascites.