International Journal of Hematology and Oncology 2021, Vol 31, Num 4 Page(s): 214-220
Evaluation of the Patients with Hematological Malignancies along with Synchronous or Metachronous Solid Tumors

Burak DEVECI1, Akin YILDIZ2, Saim YILMAZ3, Baris OZCAN4, Aysegul KARGI5, Rabin SABA6, Zeliha SAHIN2, Mustafa OZDOGAN7

1Medstar Antalya Hospital Hematology and Stem Cell Transplant Unit, Antalya, TURKEY
2Medstar Antalya Hospital Nuclear Medicine Unit, Antalya, TURKEY
3Varisson Raidology Center, Antalya, TURKEY
4Medstar Antalya Hospital Surgery Clinic, Antalya, TURKEY
5Medstar Antalya Hospital Medical Oncology Clinic, Antalya, TURKEY
6Medstar Antalya Hospital Infectious Diseases Clinic, Antalya, TURKEY
7Memorial Antalya Hospital Medical Oncology Clinic, Antalya, TURKEY

Keywords: Double primary tumor, Synchronous tumor, Metachronous tumor, PET CT
Although novel therapeutic strategies, expected lifetime of patients with multiple primary tumors is still short. However early diagnose of solid tumors can improve survival. Espe-cially PET CT evaluation can be an important guide to detect second primary tumor. In hematological malignancies particularly in lymphomas and myeloma, in those solid tumors can be misdiagnosed as progression. So discrimination is more difficult in these cases. Therefore we planned to focus on diagnostic procedures, histological types, tumor sites and survival parameters as objec-tives of this study. Patients with two cancers with hematological malignancies and solid tumors or second hematological malignancy were enrolled. An exclusion criterion was treatment-associated hematological malignancies. For statistical analysis, the SPSS program was used. Writ-ten informed consent was taken from all patients. This study was reviewed and approved by local ethics committee. Fourty five patients were enrolled to study. Among these 45 cases of multiple primary malignancies, 20 of them were synchronous (44.4%) and 25 of them were metachronous (55.6 %) (p= 0.63). The most frequently diagnosed hematological malignancy in this double primary cancer study was Non-Hodgkin’s lymphoma (23 cases; 51.1%). During follow up, 22 of 45 patients died. Median interval between the diagnosis of two tumors was 11 months (95% CI: 1-168). 36 months survival was 65.5% (95% CI: 48. 0-78.4 months). New cancers can develop at the same time or after treatment of one cancer. The incidence of second primary cancers on patients with hematological malignancies is ex-pected to increase due to the better screening programs for early detection of malignancies as well as considerable improvement in their treatment, using novel imaging techniques and longer life expectancy.