Breast - Lobular breast cancer without any CD23 positive cells

Breast - Medullary breast carcinoma with a small germinal centre containing CD23 positive dendritic cells

Colon - Colorectal adenocarcinoma lacking CD23 positive cells

Esophagus - Adenocarcinoma showing a focal accumulation of CD23 positive cells in a germinal centre

Esophagus - Squamous cell carcinoma lacking CD23 positive cells

Kidney - Clear cell renal cell carcinoma lacking CD23 positive cells

Kidney - Papillary renal cell carcinoma not containing any CD23 positive cells

Lymph node - B-CLL with strong CD23 immunostaining of tumor cells

Lymph node - CD23 negative diffuse large B-cell lymphoma

Lymph node - CD23 negative follicular B-cell lymphoma. CD23 positive dendritic cells represent remnants of germinal centres destroyed by tumor cells

Lymph node - CD23 negative Hodgkin's lymphoma containing few non neoplastic CD23 positive cells

Lymph node - CD23 negative Hodgkin's lymphoma containing non-neoplastic CD23 positive cells including a residual germinal centre

Lymph node - CD23 negative large cell anaplastic T-cell lymphoma

Lymph node - CD23 negative mantle cell lymphoma containing few germinal centre remnants that include CD23 positive dendritic cells

Lymph node - CD23 negative marginal zone lymphoma containing only few non-neoplastic CD23 positive dendritic cells

Lymph node - Chronic lymphatic leukemia (B-CLL) composed of strongly CD23 positive tumor cells

Lymph node - Diffuse large B-cell lymphoma with strong CD23 immunostaining of tumor cells

Oral cavity - Squamous cell carcinoma without any CD23 positive cells

Ovary - Endometroid carcinoma devoid of CD23 positive cells

Ovary - Serous high-grade carcinoma not showing any CD23 positive cells

Pharynx - Squamous cell carcinoma not containing any CD23 positive cells

Prostate - Adenocarcinoma (Gleason 3+3=6) devoid of CD23 positive cells

Thyroid - Follicular carcinoma lacking CD23 positive cells

Urinary bladder - Muscle-invasive urothelial carcinoma lacking CD23 positive cells

Uterus, cervix - Squamous cell carcinoma lacking CD23 positive cells

Vulva - Squamous cell carcinoma without any CD23 positive cells