Morphological Diversity of Pretibial Myxedema and Its Mechanism of Evolving Process and Outcome: A Retrospective Study of 216 Cases

Table 3

6 variants evolved from first appearing lesions at the onset of PTM.

Variables	Total	Nodule	Plaque	Diffuse swelling	Mixture	Tumor	Elephantiasis	Statistical test	value
Patient number	216	45	33	96	17	10	15
PTM course
month	27.6 ± 37.6	24.48 ± 29.06	25.3 ± 31.8	26.8 ± 36.2	30.4 ± 38.9	22.2 ± 20.8	48.0 ± 45.2	= 1.231	0.296
Range (min–max) month	0.67–192	0.67–120	1–120	1–192	1–144	12–72	6–180
First appeared lesions
Nodule (number)	118	45	27	22	10	10	4	= 108.393	0.000
Swelling erythema (number)	96		6	74	6	1	9
Papule (number)	2				1		1