Seven Cases of Subcutaneous Nodule Followed by Observation Under Diagnosis of Nodular Fasciitis : All Cases Spontaneously Disappeared

Abstract

Case1:A50-year-oldfemalenoteda at subcutaneous nodule of 3 cm in diameter with tenderness under the extensor side of the left forearm 5 days prior to presentation. The nodule was diagnosed as nodular fasciitis by sonography and MRI. After 4 weeks of follow-up with observation, the nodule regressed spontaneously. Case 2 : A 40-year-old female suddenly developed a tender nodule in the subcutaneous region of the extensor side of the right forearm 3 weeks prior to presentation. Under a tentative diagnosis of nodular fasciitis based on sonography and CT, the nodule was observed and it became very small after 11 days. Case 3 : A 33-year-old female noted a subcutaneous nodule on the extensor side of the right forearm the day before consultation. Under the diagnosis of nodular fasciitis based on sonographic examination, the nodule was observed and it disappeared after 3 months of follow-up. Case 4 : A 59-year-old female noted an asymptomatic subcutaneous nodule of 2 cm in diameter in the right temporal area 1 week prior to presentation. The nodule was diagnosed as typical nodular fasciitis based on sonography, but it disappeared after 3 weeks of observation. Case 5 : A 50-year-old female noted a subcutaneous 2 cm nodule that adhered to the underlying tissue and was movable under the skin. The nodule was diagnosed as nodular fasciitis and followed up with observation. It exhibited no change after 1 month of observation and regressed after 2 months. Case 6 : A 15-year-old male noted a subcutaneous nodule of less than 2 centimeters in diameter on the fascia of the right acromion. Sonographic examination strongly suggested nodular fasciitis. The 3-month follow-up with observation resulted in self-regression. Case 7 : A 14-year-old male noted a subcutaneous nodule with tenderness of 2 cm in diameter on the left side of the occipital area 2 weeks prior to consultation. The nodule was diagnosed as nodular fasciitis based on sonography and CT. After 4 weeks, it spontaneously regressed. Subcutaneous nodules that can be diagnosed as typical lesions of nodular fasciitis based on clinical symptoms and imaging examinations should be followed up without treatment for several weeks. Skin Research, 18 : 116-121, 2019