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Here are very large, immature myeloblasts with many nucleoli. A distincitve feature of these blasts is
a linear red "Auer ... rod" composed of ... acute myelogenous leukemia ... BloodSmear #Blood #Smear ... #Rods #AuerRods
Acute promyelocytic leukemia (blood). Typical morphologic features are bilobed ("butterfly") nuclei with dispersed chromatin, subtle to
promyelocytic leukemia ... granules, and Auer ... rods. ... #leukemia #APL ... Hematology #Clinical #Smear
A 37-year-old woman initially presented with pancytopenia and found to have leukopenia (2.1 × 103/μL) with
promyelocytic leukemia ... peripheral blood smear ... acute myeloid leukemia ... mixed lineage leukemia ... BloodSmear #Blood #Smear
Auer Rods - Bone marrow aspiration revealed 5% blasts and 65% promyelocytes; many promyelocytes had prominent
Auer Rods - Bone ... had prominent Auer ... rods (arrows) and ... APL #AuerRods #Auer ... AcutePromyelocyticLeukemia #Smear
Characteristics of Selected Pneumonias

Streptococcus pneumoniae (pneumococcus). Gram-positive diplococci. 
Haemophilus influenzae. Pleomorphic gram-negative coccobacilli. 
Staphylococcus aureus. Plump
Gram-negative rods ... Gram-negative rods ... monocytes; no bacteria ... Few PMNs; no bacteria ... Diagnosis #Comparison #Table
Leukemias Overview: ALL, CML, AML, APML, CLL

Acute leukemias > 20% blasts in the peripheral blood smear
Leukemias Overview ... peripheral blood smear ... Age: 50-60 • Auer ... Rods Significant ... • Peripheral smear
Capnocytophaga spp on Culture and Blood Smear
Associated w/ dog/human oral flora, can cause bacteremia in immunocompromised
Culture and Blood Smear ... flora, can cause bacteremia ... blood culture of leukemia ... Gram negative rods ... Culture #Blood #Smear
Blood Disorders - Markers and Differential Diagnosis Algorithm 
Acute
 • Myloid (AML) - CD13, CD33, CD34,
, Sudan Black, Auer ... rod • Lymphoid ... o CML - bcr-able ... o Other bcr-able
Infection-Related Cancers
Viruses:
 • HPV - Cervical, anogenital, head and neck, skin cancer
 • HTLV-1 - Adult
- Adult T-cell Leukemia ... Bladder cancer Bacteria ... differential #diagnosis #table