Metastatic seminoma presenting as neck and axillary lymphadenopathy in an elderly man.

A man in his 60s presented with a gradual progressive right-sided neck mass. Initial core biopsy was inconclusive and he was treated with a short course of oral prednisone for presumed sarcoidosis. Two months later, the patient developed worsening dysphagia, hoarseness of voice, dyspnea, and weight loss.

Glutamic acid decarboxylase (GAD) antibody-positive paraneoplastic stiff person syndrome associated with mediastinal liposarcoma.

Stiff person syndrome (SPS) is a rare, debilitating neurological illness characterised by rigidity and spasms of the axial muscles, causing severe restrictions to mobility. SPS can be classic, partial or paraneoplastic. We report a case of a young woman who presented with seizures and painful spasms of the thoracolumbar muscles who was subsequently diagnosed with SPS.

Severe pulmonary toxicity related to carfilzomib use: a rare but serious side effect.

Carfilzomib is a selective proteosome inhibitor that is commonly used in the treatment of relapsed or refractory multiple myeloma. Carfilzomib has been commonly associated with respiratory side effects. It can rarely also cause fatal pulmonary toxicity.