A 57-year-old female is evaluated for a mammogram with a suspicious lesion. Symptoms and history include:

  • Weight has been stable
  • Never smoked cigarettes
  • Eats a “regular” diet containing a moderate amount of fat
  • Nulligravida (she has never conceived)
  • Patient’s aunt had breast cancer
  • Patient has not had a mammogram in 5 years

After core needle biopsy of the lesion and H&E staining, the following slide is seen:

tsl-pg1.png

You conclude this histology sample was taken from:

Thymus
Lymph Node
Spleen