21M. Cystic lesion in mandible.
 |
| New bone formation |
Sunday, January 19, 2020
Friday, January 3, 2020
Condyloma acuminatum
Condyloma acuminatum
Anal growth, usually due to human papillomavirus infection
 |
| Verucous hyperplasia |
 |
| Koilocytes |
Squamous cell carcinoma
Poorly differentiated squamous cell carcinoma
A growth over tonsil
 |
| Plemorphic spindle cells |
 |
| Bizarre nuclei & mitotic figures |
 |
| Looks almost like a pleomorphic sarcoma |
 |
| Until you find this |
 |
| A keratin pearl |
Rosai Dorfman disease
Sinus histiocytosis with massive lymphadenopathy
This disease stands out in the pantheon of weirdness: monocytes and macrophages attacking one's own lymph nodes, but not quite able to finish the job. The node remains in a stalemate.
 |
| Lymphocytes engulfed by macrophages ... |
 |
| ... but not quite digested |
 |
| ... because they are 'self', after all |
 |
| a phenomenon called 'emperipolesis' |
 |
| Lymph node mostly replaced by pink macrophages |
 |
| with reisdual blue lymphoid follicles |
Subscribe to:
Posts (Atom)
-
A probe through aqueduct of Sylvius (connecting 3rd and fourth ventricle) Base of brain showing vessels and exit of cranial nerves ... -
Put simply, as long as we don't find fluorochromes with absolute fidelity (i.e. very narrow emission peaks), we simply have to compensat...
