Abdul Mannan – The RBC Crime Scene: Decoding Inclusions on the Blood Film
Abdul Mannan, Consultant Haematologist at Betsi Cadwaladr University Health Board, posted on LinkedIn:
”The RBC “Crime Scene”: Decoding Inclusions on the Blood Film
As Haematologists, we are essentially detectives. When we look down the microscope, the Red Blood Cells often leave us clues about systemic pathology – we just need to know how to interpret them.
Morphology is the foundation of diagnosis.
Here is a visual breakdown of the classic RBC inclusions we encounter, and what they represent:
1. Howell-Jolly Bodies (The DNA Remnant)
β’ Composition: DNA (Nuclear fragment).
β’ The Clue: Usually indicates the spleen is absent (asplenia) or not functioning (hyposplenism). The spleen usually “bites” these out; without it, they persist.
2. Basophilic Stippling (The RNA Scatter)
β’ Composition: Precipitated RNA (Ribosomes).
β’ The Clue: Think distinct toxic insults like Lead Poisoning, or hemoglobin synthesis issues like Thalassemia.
β’ Pearl: Donβt confuse this with stain precipitate!
3. Pappenheimer Bodies (The Iron Clumps)
β’ Composition: Iron (Ferritin).
β’ The Clue: Seen in Sideroblastic Anemia or post-splenectomy.
β’ Pearl: These tend to cluster, unlike the diffuse scatter of basophilic stippling.
4. Heinz Bodies (The Ghost)
β’ Composition: Denatured Hemoglobin.
β’ The Clue: G6PD Deficiency or oxidative damage.
β’ Pearl: You won’t see these clearly on a standard Wright/Giemsa stain! You need a Supravital Stain to visualize them.
5. The Invaders (Infectious)
β’ Malaria: Look for the classic ring forms.
β’ Babesia: Look for the pathognomonic “Maltese Cross” tetrad form.
The Traps (Artifacts)
Always verify before you diagnose. A platelet sitting on top of an RBC can look exactly like a Howell-Jolly body (look for the halo).
Which of these inclusions do you find post-graduates struggle to identify the most?”
Keep up with Hemostasis Today.
-
Jul 21, 2026, 15:02Sham Zamil: The Role of ABO Compatibility in Platelet Pooling
-
Jul 21, 2026, 13:43Dima Shulkin: Assessing AI-Driven Blood Test Screening for Colorectal Cancer
-
Jul 21, 2026, 13:24Benoit Mores: National Initiative Targets Better Cardiovascular Outcomes
-
Jul 21, 2026, 13:10Paolo Zamboni: Chronic Cerebrospinal Venous Insufficiency Hypothesis in Multiple Sclerosis
-
Jul 21, 2026, 13:05Danai PoutakidouΦ The Diagnostic Pitfalls of Unexpected PT/INR Prolongation
-
Jul 21, 2026, 13:00Kefah Mokbel: Beyond Thromboprophylaxis – Enoxaparin’s Emerging Anticancer Signal
-
Jul 21, 2026, 12:56Emmanuel Velazquez-Alvarez: Bridging Innovation and Clinical Practice
-
Jul 21, 2026, 12:53Sandrine Bouteille: A Milestone Presentation at ISTH 2026
-
Jul 21, 2026, 12:40Kalled Musallam: A Comprehensive Review of Thalassemia