Cranial metastatic alveolar rhabdomyosarcoma mimicking hematological malignancy in an adolescent boy

Disseminated alveolar echinococcosis mimicking a metastatic malignancy.

Alveolar echinococcosis, which is caused by Echinococcus multilocularis, is a very aggressive and potentially fatal infestation which always affects the liver primarily and metastasizes to any part of the body. Imaging studies are usually highly suspicious of carcinoma or sarcoma, and biopsy may provide the first indication of infection. We report a case of disseminated alveolar echinococcosis ...

Metastatic alveolar rhabdomyosarcoma to the bone marrow mimicking acute leukemia.

A 17-year-old female with history of a left cheek alveolar rhabdomyosarcoma (ARMS) status after 14 cycles of vincristine, dactinomycin, and cyclophosphamide presented 2 months after the last drug cycle with bruising, thrombocytopenia, and anemia (white blood cell count 3.4 109/L, hemoglobin 7.1 g/dL, platelets 8 109/L). The peripheral blood smear demonstrated normocytic anemia with nucleated re...

Cecal Giant Lipoma Mimicking Malignancy

Alveolar rhabdomyosarcoma of the left hand with bilateral breast metastases in an adolescent female.

Rhabdomyosarcoma is a common extramammary malignancy in pediatric age groups, but it rarely metastasizes to the breast. Breast rhabdomyosarcomas are commonly metastatic, with possible primary locations at the head and neck, trunk, extremities, retroperitoneum and perianal region. We report a case of primary alveolar rhabdomyosarcoma of the upper extremities in a 17-year-old adolescent female wh...

Primary hyperparathyroidism with brown tumor mimicking metastatic bone malignancy.

Bone and joint pain are commonly encountered conditions in daily practice. In the elderly, when osteolytic lesions are identified in imaging studies, metastatic bone tumor is the first impression that comes to the clinician's mind. Although the worst-case scenario should be ruled in, other differential diagnoses such as metabolic bone disease should be considered as well. We report a case of br...