5-year-male with right tonsillar mass.
Gross: The specimen consists of two pink-tan, irregular tonsillar tissue fragments, measuring 1.8 x 1.7 x 1.2 cm. each, and weighing 1 gm. respectively. Tonsillar crypts are grossly visible on the surface. The specimen is sectioned. The cut surface is grossly unremarkable.
Micro: Sections show tonsil partially covered by squamous mucosa. The crypts are well developed. There is moderate follicular center development. Protruding from the tonsillar surface is a rounded papillary area composed of irregular interconnecting vascular channels lined by endothelial cells in a fibrous stroma. The channels are partially filled with small lymphocytes. No cellular atypia is identified.
- Case Overview
- Diagnosis
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Micro: see photos. (100x iol). Pep stains and H & E stain.
Comments
multiple vascular channels lined by endothelial cells filled with eosinophilic material stroma shows aggreates of lyphoid follicles
Supporting microscopy showed multiple vascular spaces lined by endothelial cells and filled with lymph. The surrounding stroma was infiltrated by plasma cells and scattered aggregates of lymphocytes, forming follicles with germinal centres.
Lymphangiomas occur in the head & neck region in ~90% of cases, being located primarily in the skin or subcutaneous tissue. This possibly accounting for 1.9% of all tonsillar tumours
Nice images. They capture the aggregates of lymphocytes that may appear within the dilated lymphatic channels in these lesions.