Conclusion:
Based on the varying patient presentations encountered in the setting of
myelomatous involvement of body cavities, it can be stressed that
ascitic or pleural fluid cytology is an important diagnostic method in
the presence of atypical MM symptoms. Cytological examination may be
useful in early diagnosis of a plasma cell neoplasm. It is also helpful
in identifying extra-medullary progression in some cases where it is
indicative of an aggressive form of the disease requiring prompt
evaluation and treatment.