Colon- Caldesmon negative colorectal adenocarcinoma.
Colon- Caldesmon negative colorectal adenocarcinoma. 
Esophagus- Caldesmon negative squamous cell carcinoma adjacent to caldesmon positive smooth muscle cells (Caldesmon immunohistochemistry).
Esophagus- Caldesmon negative squamous cell carcinoma adjacent to caldesmon positive smooth muscle cells (Caldesmon immunohistochemistry). 
Kidney- Angiomyolipoma with strong caldesmon immunostaining of muscular tumor cells (Caldesmon immunohistochemistry).
Kidney- Angiomyolipoma with strong caldesmon immunostaining of muscular tumor cells (Caldesmon immunohistochemistry). 
Kidney- Caldesmon negative clear cell carcinoma containing numerous caldesmon positive small blood vessels (Caldesmon immunohistochemistry).
Kidney- Caldesmon negative clear cell carcinoma containing numerous caldesmon positive small blood vessels (Caldesmon immunohistochemistry). 
Kidney- Strong caldesmon staining of muscular tumor cells of an angiomyolipoma (Caldesmon immunohistochemistry).
Kidney- Strong caldesmon staining of muscular tumor cells of an angiomyolipoma (Caldesmon immunohistochemistry). 
Ovary- Caldesmon negative endometroid carcinoma.
Ovary- Caldesmon negative endometroid carcinoma. 
Prostate- Caldesmon negative adenocarcinoma (Gleason 3+3=6) surrounded by prostatic stroma rich in caldesmon positive smooth muscle cells (Caldesmon immunohistochemistry).
Prostate- Caldesmon negative adenocarcinoma (Gleason 3+3=6) surrounded by prostatic stroma rich in caldesmon positive smooth muscle cells (Caldesmon immunohistochemistry). 
Soft tissue- Caldesmon negative liposarcoma.
Soft tissue- Caldesmon negative liposarcoma. 
Soft tissue- Caldesmon negative malignant peripheral nerve sheath tumor (MPNST) containing one small caldesmon positive blood vessel (Caldesmon immunohistochemistry).
Soft tissue- Caldesmon negative malignant peripheral nerve sheath tumor (MPNST) containing one small caldesmon positive blood vessel (Caldesmon immunohistochemistry).
Soft tissue- Caldesmon negative neurofibroma containing three small caldesmon positive blood vessels (Caldesmon immunohistochemistry).
Soft tissue- Caldesmon negative neurofibroma containing three small caldesmon positive blood vessels (Caldesmon immunohistochemistry). 
Soft tissue- Caldesmon negative sarcoma NOS.
Soft tissue- Caldesmon negative sarcoma NOS.
Soft tissue- Caldesmon negative Schwannoma.
Soft tissue- Caldesmon negative Schwannoma. 
Soft tissue- Myopericytoma with strong Caldesmon immunostaining of tumor cells (Caldesmon immunohistochemistry).
Soft tissue- Myopericytoma with strong Caldesmon immunostaining of tumor cells (Caldesmon immunohistochemistry). 
Thyroid- Caldesmon negative papillary carcinoma including several caldesmon positive small blood vessels (Caldesmon immunohistochemistry).
Thyroid- Caldesmon negative papillary carcinoma including several caldesmon positive small blood vessels (Caldesmon immunohistochemistry). 
Urinary bladder- Caldesmon negative muscle-invasive urothelial carcinoma adjacent to contains caldesmon positive smooth muscle and a large blood vessel (Caldesmon immunohistochemistry).
Urinary bladder- Caldesmon negative muscle-invasive urothelial carcinoma adjacent to contains caldesmon positive smooth muscle and a large blood vessel (Caldesmon immunohistochemistry). 
Uterus- Caldesmon negative endometroid endometrium carcinoma adjacent to caldesmon positive smooth muscle cells (Caldesmon immunohistochemistry).
Uterus- Caldesmon negative endometroid endometrium carcinoma adjacent to caldesmon positive smooth muscle cells (Caldesmon immunohistochemistry). 
Uterus- Leiomyosarcoma showing intense Caldesmon immunostaining of tumor cells (Caldesmon immunohistochemistry).
Uterus- Leiomyosarcoma showing intense Caldesmon immunostaining of tumor cells (Caldesmon immunohistochemistry). 
Uterus- Leiomyosarcoma with strong Caldesmon immunostaining of tumor cells (Caldesmon immunohistochemistry).
Uterus- Leiomyosarcoma with strong Caldesmon immunostaining of tumor cells (Caldesmon immunohistochemistry). 
Uterus, cervix- Caldesmon negative adenocarcinoma next to caldesmon positive smooth muscle cells and small blood vessels (Caldesmon immunohistochemistry).
Uterus, cervix- Caldesmon negative adenocarcinoma next to caldesmon positive smooth muscle cells and small blood vessels (Caldesmon immunohistochemistry). 
Uterus, cervix- Caldesmon negative squamous cell carcinoma adjacent to caldesmon positive smooth muscle and small blood vessels (Caldesmon immunohistochemistry).
Uterus, cervix- Caldesmon negative squamous cell carcinoma adjacent to caldesmon positive smooth muscle and small blood vessels (Caldesmon immunohistochemistry).