Anaplastic large cell lymphoma (ALCL) is predominantly a systemic disease with nodal involvement, but extranodal involvement can occur either as the primary presentation or during the disease course. Primary epiphyseal involvement is extremely rare with lymphomas. This case report illustrates an 8-year old boy who first presented with pain over the right upper extremity, which was initially treated as epiphyseal osteomyelitis. A few weeks later, he presented with abdominal pain and an abdominal wall mass, which on biopsy proved to be an anaplastic large-cell lymphoma.

Middle ear adenoma is a benign tumor of the middle ear that can have exocrine (mucinous) and/or neuroendocrine differentiation. Early authors described a separate tumor with predominantly neuroendocrine differentiation as a middle ear carcinoid tumor, but these are now known to be the same tumor. We review the literature of this tumor, including the clinical presentation, gross pathology, histopathology, immunohistochemistry, differential diagnosis, and prognosis.

Pineal anlage tumor is an extremely rare tumor that is not listed in the 2000 World Health Organization Classification of nervous system tumors. It has been defined as a primary pineal tumor with both neuroepithelial and ectomesenchymal differentiation and without endodermal differentiation. We review the literature on this tumor, including the clinical presentation, gross pathology, histopathology, immunohistochemistry, differential diagnosis, and prognosis.

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