A 10yr old boy complains of fatigue and abdominal pain after playing football He also complains of painful swelling of digits in the past USG abdomen shows a small spleen which of the following is most likely diagnosis
**Core Concept**
The patient's symptoms, particularly the painful swelling of digits and fatigue, suggest a hematological disorder affecting the blood's ability to clot. The small spleen on USG abdomen indicates splenomegaly is not present, which is a key differentiator.
**Why the Correct Answer is Right**
The patient's symptoms are consistent with Hereditary Hemorrhagic Telangiectasia (HHT), also known as Osler-Weber-Rendu syndrome. This genetic disorder affects the blood vessels, leading to telangiectasias (dilated blood vessels) and arteriovenous malformations (AVMs). The presence of painful swelling of digits (acrocyanosis) and fatigue is likely due to chronic anemia caused by the AVMs. The small spleen size rules out conditions like portal hypertension or splenic sequestration that would typically cause splenomegaly.
**Why Each Wrong Option is Incorrect**
**Option A:** Sickle Cell Disease is unlikely, as it typically presents with episodes of pain crisis, and the spleen is often enlarged or functionally asplenic due to autosplenectomy.
**Option B:** Fanconi Anemia is a genetic disorder that affects the bone marrow, leading to aplastic anemia and increased risk of malignancies, but it does not typically present with painful swelling of digits.
**Option C:** Thalassemia major can cause fatigue and anemia, but it does not typically present with painful swelling of digits or a small spleen.
**Option D:** Hemophilia A is a bleeding disorder that affects males, but it does not typically present with painful swelling of digits or a small spleen.
**Clinical Pearl / High-Yield Fact**
Hereditary Hemorrhagic Telangiectasia (HHT) often presents with a triad of epistaxis (nosebleeds), telangiectasias, and AVMs, which can lead to complications like gastrointestinal bleeding and pulmonary hypertension.
**Correct Answer:** B.