Introduction:
In the middle of ongoing treatment, Andrew remembered the Morgan family's longing for a child. This memory was significant because it reminded him of the emotional and ethical complexities involved in his work as a doctor.

Explanation:
- Andrew's ongoing treatment: The context of this question is Andrew's ongoing treatment, which suggests that he is a patient receiving medical care.
- Memory of the Morgan family: In the middle of his treatment, Andrew remembers something about the Morgan family. This memory stands out and is significant for him.
- Longing for a child: The memory specifically relates to the Morgan family's longing for a child. This reflects their desire and longing to have a child of their own.
- Emotional significance: Andrew's remembrance of the Morgan family's longing for a child likely evokes strong emotions within him. It reminds him of the deep emotional connections patients and families have with their healthcare providers.
- Ethical complexities: This memory also brings to Andrew's mind the ethical complexities involved in his role as a doctor. The longing for a child highlights the emotional and moral dilemmas that doctors often face when dealing with patients and their families.
- Obligation as a doctor: Andrew's memory of the Morgan family's longing for a child might also remind him of his obligation as a doctor to provide the best possible care and support to his patients. It reinforces the importance of empathy and understanding in medical practice.

Conclusion:
In the midst of his ongoing treatment, Andrew's memory of the Morgan family's longing for a child serves as a poignant reminder of the emotional and ethical complexities inherent in his role as a doctor. It underscores the importance of empathy, compassion, and a deep understanding of patients' and families' desires and needs.