1023
Three months following splenectomy, multiple abscesses occurred in the muscles of both thighs while the patient was receiving the third course of the CHOP regimen.
 ( adverse event: while ,  the patient: Subject, multiple abscesses occurred in the muscles of both thighs: Effect, Three months following splenectomy: Treatment, third course of the CHOP regimen: Treatment, Three months: Treatment.Duration, splenectomy: Treatment.Drug, CHOP: Treatment.Drug, third course: Treatment.Dosage, CHOP: Combination.Drug, splenectomy: Combination.Drug) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: adverse event,potential therapeutic event, Arguments type: Treatment.Disorder,Treatment.Time_elapsed,Treatment.Dosage,Subject.Race,Treatment.Drug,Treatment.Route,Subject.Disorder,Treatment.Freq,Treatment,Effect,Subject.Population,Treatment.Duration,Combination.Drug,Subject,Subject.Age,Subject.Gender. 
Text: {0} 
Answer:
 ( adverse event: while ,  the patient: Subject, multiple abscesses occurred in the muscles of both thighs: Effect, Three months following splenectomy: Treatment, third course of the CHOP regimen: Treatment, Three months: Treatment.Duration, splenectomy: Treatment.Drug, CHOP: Treatment.Drug, third course: Treatment.Dosage, CHOP: Combination.Drug, splenectomy: Combination.Drug) 