Pathnologic @pathnologic
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clinical microscopy pathology lymphadenitis carcinoma hiv papillary ptc variant ait amiodarone brasiliensis cancer diffuse earlyphase gross herpes histiocytes hobnail medullary
Herpes Simplex Virus Lymphadenitis • Expanded paracortex • HSV-infected cells are present in areas
paracortex • HSV-infected ... cells are present ... Lymphadenitis #HSV ... Microscopy #Clinical #LymphNode
Here is a lymph node that is lymphoid-depleted, fibrotic, and burned-out, typical of late phase HIV
of late phase HIV ... "Pattern C" in HIV ... with late phase HIV ... pattern C #HIV ... Pathology #Microscopy #LymphNode
Paracoccidioides brasiliensis Lymphadenitis: Paracoccidioidomycosis is a systemic fungal infection rare in the US, but endemic in
fibrosis (A) and well-formed ... seen within giant cells ... Lymphadenitis #Pathology #LymphNode
Here is a lymph node with florid follicular hyperplasia typical of HIV lymphadenitis (so-called "pattern A",
in early phase HIV ... "Pattern A" in HIV ... Warthin-Finkeldey type giant cells ... Monocytoid B cells ... Pathology #Microscopy #LymphNode
Amiodarone induced thyroid changes Histopath: Remarkably enlarged follicles, distended with colloid, without scalloping, and lined by flattened
Amiodarone induced thyroid ... flattened follicular cells ... change, Follicular cells ... #Amiodarone #thyroid
Signet ring cell histiocytes in lymph node sinuses! This can mimic metastatic adenocarcinoma. Histiocytes have ingested
Signet ring cell ... #SignetRing #Cell ... #Histiocytes #LymphNode
Hobnail variant of PTC: micropapillary architecture, dense eosinophilic cytoplasm, hobnail cells with apical nuclei, and marked
cytoplasm, hobnail cells ... PTC #Papillary #Thyroid
Oncocytic Variant of Medullary Carcinoma Don't assume every oncocytic thyroid tumor is a Hurthle cell neoplasm! Nested
every oncocytic thyroid ... tumor is a Hurthle cell
Diffuse Sclerosis Variant—PTC - Rare variant of PTC - Approximately 3% ofall PTC
• Carcinoma cells ... around the tumor cells ... PTC #Papillary #Thyroid
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