Association of Multiple Myeloma and Giant Cell Arteritis - A Case Report.

Autoimmune diseases (AID) have been associated with a variety of lymphoproliferative disorders. Multiple myeloma (MM), one of the most common haematologic malignancies characterized by clonal proliferation of bone marrow plasma cells, has been associated with a range of autoimmune disorders. In this report, we described a case study of a patient admitted to our Internal Medicine Department for a bone marrow biopsy and myelogram due to a monoclonal peak observed by his general practitioner. However, at admission he presented typical giant cell arteritis (GCA) complaints, suggesting the coexistence of both diseases. The possible pathogenesis, as found in the literature, explaining the association will be discussed. LEARNING POINTS: A relationship between AID and lymphoproliferative diseases, although rare, may occur and some studies suggest that the diagnosis of autoimmune disease has a negative impact on survival in MM patients.Bone marrow plasmacytosis can present a diagnostic dilemma, since it may be due to neoplastic or non-neoplastic conditions (that is, reactive plasmacytosis associated with AID, chronic infection, metastatic carcinoma, liver diseases and acquired immunodeficiency).Immunophenotyping in a myelogram or immunohistochemistry in bone marrow studies are useful in confirming a monoclonal plasma cell proliferation.

Acute Parotitis: A Rare Complication of Fine Needle Aspiration in Warthin Tumour.

Salivary gland tumours are a group of neoplasms with considerable heterogeneity regarding their histology and biological behaviour. Warthin tumour (WT) is the second most common benign parotid tumour. Options for tissue diagnosis include fine needle aspiration (FNA) and ultrasound-guided core needle biopsy. Complications related to FNA are rare. We present the case of a 49-year-old man admitted with parotitis after FNA and discuss management and an alternative investigative approach when WT is strongly suspected. LEARNING POINTS: Warthin tumour (WT) can be clinically suspected based on location (parotid gland tail), cystic texture, patient sex (male) and age (fifth and sixth decades of life), after exclusion of features related to malignancy.Complications of fine-needle aspiration (FNA) for WT diagnosis are rare and most commonly include haemorrhage, facial nerve injury, cellulitis at the needle puncture site and, less frequently, parotitis.When diagnosing tumours strongly suspected of being WT, the clinician should avoid routine FNA and instead use combined imaging studies.