Table 2.

Diagnostic examination results of present cases

	Histopath of bullous lesion	DIF	ELISA	Histopath of inflammatory skin lesion that could be DM	PFTs	HLA
Case 1 (PV and classic DM)	Acantholytic dermatosis (Right breast, 4/26/2018)	IgG and C3 deposition intercellularly (left upper back, 4/26/2018)	Dsg 1: 126.4075 (> 36) Dsg 3: 59.28889 (> 37) (10/05/2018)	N/A	Order active	N/A
Case 2 (MMP and DM)	Consistent with pemphigoid (right buccal and gingival mucosa -2004)	N/A		Vascular ectasia and perivascular inflammation, with rare dyskeratotic cells at the dermoepidermal junction, compatible with connective tissue disorder (Right elbow, 6/12/2018)	Mild combined restriction and obstruction, with severely reduced diffusing capacity of the lungs for carbon monoxide 8/24/2018 Pulm: combined pulmonary fibrosis and emphysems (has smoking history also). Only fulfilled probable UIP (ILD). Lung biopsy is definitive.	N/A

DIF, direct immunofluorescence; DM, dermatomyositis; Dsg, desmoglein; ELISA, enzyme-linked immunosorbent assay; DIF, HLA, human leukocyte antigen; Ig, immunoglobulin; ILD, interstitial lung disease, MMP, mucous membrane pemphigoid; N/A, not available; PFT, pulmonary function testing; PV, pemphigus vulgaris; UIP, usual interstitial pneumonia