PAX-5

CD79a

DDX of superficial pediatric small round blue cell tumors are sarcomas (Ewing family and fusion-associated); rhabdomyosarcoma; lymphomas/leukemias; neuroblastoma #dermpath #surgpath #blueskypath #blueskydermpath #blueskysurgpath #hemepath #blueskyhemepath #pathology #blueskypathology

Acquired Reactive Perforating Dermatosis is a Variant of Prurigo Nodularis - PubMed Patients with chronic pruritus may develop scratch-induced lesions with elevated borders and central necrosis. This so-called umbilicated type of prurigo (UP) is rare and is assumed to develop prefere...

#blueskypath #pathsky #blueskydermpath #dermpathsky #dermatopathology #surgicalpathology #dermpath #derm #dermatology #pathology #inflammatoryderm

pubmed.ncbi.nlm.nih.gov/27349279/

Hypercellular basophilic tumor with closely packed glandular architecture.

The closely packed "glands" contain dense eosinophilic material and are lined by monotonous cells.

PAX-8 is positive.

Thyroglobulin is positive.

Metastatic thyroid carcinoma to the scalp. #dermpath #surgicalpath #blueskypath #blueskypathology #blueskydermpath #immunohistochemistry #pathology