Prognosis
The prognosis for a child with a solitary mastocytoma is extremely good. By the time the child reaches puberty, there is typically spontaneous regression.
If any type of mastocytoma persists beyond adolescence, or tryptase levels continue to rise after puberty, however, that raises concern for progression to systemic mastocytosis. Although this diagnosis is rare in children, bone marrow studies may be necessary to determine the patient’s course.1
OUTCOME FOR THE CASE PATIENT
The patient was placed on daily cetirizine. His parents were advised not to irritate the lesion and were educated on possible triggers, including the need to avoid NSAIDs. They were also trained in the use of an epinephrine auto-injector.
CONCLUSION
Cutaneous mastocytosis should be included in the differential diagnosis of rashes and skin lesions in pediatric patients. It is important to be able to recognize the presenting signs and symptoms of a mastocytoma and to monitor the lesion over time.4 Educating the child’s parents, teachers, and caregivers about potential triggers and treatment of a mast cell activation attack can help minimize the symptoms.