Therapy related complications in plasmablastic lymphoma in immunocompetent individual.

Background: Plasmablastic lymphoma (PBL) is a rare and aggressive subtype of diffuse large B-cell lymphoma seen in immunocompromised individuals. It has a diffuse growth pattern, with no standard therapy and a poor survival rate. Due to overlap in presenting features with lymphoma and myeloma, PBL is often a diagnostic dilemma. We present a case of PBL in a young immunocompetent female who developed treatment associated complications.

Case report: A 36-year-old presented with a lesion extending from the oral cavity to the pharynx and involving the angle of the mandible. Radiology and laryngoscopy described a growth pattern that was diagnosed to be PBL on histopathology. The patient underwent chemotherapy using level II DA-EPOCH (dose-adjusted-etoposide, prednisone, vincristine, cyclophosphamide, and doxorubicin) and prophylactic granulocyte-colony stimulating factor along with radiotherapy and ultimately, achieved metabolic response. However, she developed several episodes of paralytic ileus, cytopenia, oral ulcers, dermatitis and long-standing hypothyroidism as therapy-related complications and has been on treatment for the same ever since.

Conclusions: Thus, a high index of suspicion is necessary for early diagnosis and rapid initiation of therapy. Further, there is a need to detect and address therapy related complications early to prevent long-standing, therapy-related side effects from developing and deteriorating the patient's quality of life.